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�o`O��FFatkea Town of Southold 3/13/2022 a ;4 P.O.Box 1179 o _ 53095 Main Rd Southold,New York 11971 CERTIFICATE OF OCCUPANCY No: 42906 Date: 3/13/2022 THIS CERTIFIES that the building OTHER Location of Property: 300 Gardiners Ln, Southold SCTM#: 473889 Sec/Block/Lot: 70.-8-12 Subdivision: Filed Map No. Lot No. conforms substantially to the Application for Building Permit heretofore filed in this office dated 5/28/2021 pursuant to which Building Permit No. 46880 dated 9/27/2021 was issued, and conforms to all of the requirements of the applicable provisions of the law. The occupancy for which this certificate is issued is: energy storage system to exterior of existing single-family dwelling g as applied for. The certificate is issued to Norklun, Stacey of the aforesaid building. SUFFOLK COUNTY DEPARTMENT OF HEALTH APPROVAL ELECTRICAL CERTIFICATE NO. 46880 3/4/2022 PLUMBERS CERTIFICATION DATED Authorized Signature SUFFo� TOWN OF SOUTHOLD moo- ay BUILDING DEPARTMENT C, x TOWN CLERK'S OFFICE oy • o�� SOUTHOLD, NY f � BUILDING PERMIT (THIS PERMIT MUST BE KEPT ON THE PREMISES WITH ONE SET OF APPROVED PLANS AND SPECIFICATIONS UNTIL FULL COMPLETION OF THE WORK AUTHORIZED) Permit#: 46880 Date: 9/27/2021 Permission is hereby granted to: Norklun, Stacey PO BOX 780 Southold, NY 11971 To: install energy storage system to exterior of existing single-family dwelling as applied for. At premises located at: 300 Gardiners Ln, Southold SCTM #473889 Sec/Block/Lot# 70.-8-12 Pursuant to application dated 5/28/2021 and approved by the Building Inspector. To expire on 3/29/2023. Fees: SINGLE FAMILY DWELLING-ADDITION OR ALTERATION $50.00 ELECTRIC $100.00 CO-ALTERATION TO DWELLING $50.00 Total: $200.00 ilding Inspector o��OF SOUryol h O Town Hall Annex Telephone(631)765-1802 54375 Main Road P.O.Box 1179 sean.devlin(.U-)town.southold.ny.us Southold,NY 11971-0959 COUffm BUILDING DEPARTMENT TOWN OF SOUTHOLD CERTIFICATE OF ELECTRICAL COMPLIANCE SITE LOCATION Issued To: Stacey Norklun Address: 300 Gardiners Ln city:Southold st: NY zip: 11971 Building Permit#: 46$$0 Section: 70 Block: $ Lot: 12 WAS EXAMINED AND FOUND TO BE IN COMPLIANCE WITH THE NATIONAL ELECTRIC CODE Contractor: DBA: SUNation Solar License No: 33412ME SITE DETAILS Office Use Only Residential X Indoor X Basement X Batt.Storage X Commerical Outdoor X 1st Floor X Pool New X Renovation 2nd Floor Hot Tub Addition Survey Attic Garage INVENTORY Service 1 ph X Heat Duplec Recpt Ceiling Fixtures Bath Exhaust Fan Service 3 ph Hot Water GFCI Recpt I Wall Fixtures Smoke Detectors Main Panel A/C Condenser Single Recpt Recessed Fixtures CO2 Detectors Sub Panel A/C Blower Range Recpt Ceiling Fan Combo Smoke/CO Transfer Switch 200A UC Lights Dryer Recpt Emergency FixtureSLI Time Clocks Disconnect Switches 4'LED Exit Fixtures Pump Other Equipment: 200A Tesla Manual Transfer Switch / Combiner w/230 Powerwaq& 240Solar, 14kW Tesla Powerwall 2 Notes: Battery Storage Inspector Signature: Date: March 4, 2022 p 9 S.Devlin-Cert Electrical Compliance Form o�aOF SOUTy�! CiV® I 0 O (�4V IN MS f # TOWN OF -SOUTHOLD BUILDING DEPT.' `ycourm, 765-1802 INSPECTION [ ] FOUNDATION 1ST [ ] ROUGH PL13G. j ] FOUNDATION 2ND = [ ] INSULATION/CAULKING [ ] FRAMING /STRAPPING [ ] FINAL [ ] FIREPLACE & CHIMNEY [ ] 'FIRE'SAFETY INSPECTION [ ] FIRE RESISTANT CONSTRUCTION [ ] FIRE RESISTANT PENETRATION [ ] ELECTRICAL (ROUGH) ELECTRICAL (FINAL) [ ] CODE VIOLATION [ ] PRE C/O REMARKS: . ♦4 '"�.,e2'� �-7-�t2C� DATE / 2-2-- INSPECTOR TOWN OF SOUTHOLD BUILDING DEPT. 765-1802 INSPECTION [ ] FOUNDATION IST [ ] ROUGH PL13G. [ ] FOUNDATION 2ND [. ] INSULATION/CAULKING [ ] FRAMING/STRAPPING [ ] FINAL [ ] FIREPLACE & CHIMNEY [ ] FIRE SAFETY INSPECTION [ ] FIRE RESISTANT CONSTRUCTION [ ]. FIRE RESISTANT PENETRATION [ ] ELECTRICAL (ROUGH) [ ] ELECTRICAL (FINAL) [ ] CODE VIOLATION [ ] PRE C/O REMARKS: r1 All- DATE /7/Z7-- INSPECTOR x 1 E i :Fisher En neerin Services P.C.. g , 509 Sayville Blvd • Sayville •New York 11782 Phone. (631) 786-4419 December 2,2021 Town of Southold Building Department Post Installation Certification Subject: Engineer Statement for Solar Energy C} J � e �y St�rago Installation Residence—Norklun—300 Gardiner's Lane, Southold JAN 1 3 2022 Permit No.—46880 Inspection Date: 10/28/2021 The energy storage system for the photovoltaic system at the above referenced residence has been generally observed to be installed properly in accordance with the approved plans and is certified by Fisher Engineering Services, P.C.to be in compliance with the minimum requirements of the Town, the 2020 Residential Code of New York State,2018 International Residential Code(2018 IRC), Long Island Unified Solar Permit Imitative (LIUSPI), and National Electric Code 2017, and the provisions of ASCE 7-16. t SI<rceirely, � r J . d 79 .. William G. Fisher, P.E. Licensed Professional Engineer .... Architectural Design•Residential•Light Commercial Additions•Extensions•Conversions Construction Estimates/Oversight•Expediting•Inspections FIELD INSPECTION REPORT 'DATE COMMENTS FOUNDATION(IST) y ------------------------------------ FOUNDATION(2Np) ' .. ,. .. V ROUGH FRAMING:& `, PLUMBING' . y CKI INSULATION.PER N.Y. H. STATE ENERGY CODE FINAL ADDITIONAL COMMENTS 'S g 1D H z d FFUtB�oTOWN OF SOUTHOLD—BUILDING DEPARTMENT y Town Hall Annex 54375 Main Road P. O. Box 1179 Southold,NY 11971-0959 Telephone(631) 765-1802 Fax(631) 765-9502 hftps://www.southoldtowmy.gov f Date Received APPLICATION FOR BUILDING PERMIT cc 19 For Office Use Only ! ,2 LIi PERMIT NO. Building Inspector: f d '• �_ - f MAY 2 8 2021 Applications and forms must be filledout in their entirety:Incomplete applications will not be accepted. Where the Appiicant is not the owner,an ? ,1 Owner's Authorization.form(Page 2)shall be completed. Date: OWNERS)OF PROPERTY:' Name:Stacey Norklun SCTM#1000-070.00-08.00-012.000 Project Address:300 Gardiners Lane, _Southold, NY 11971 Phone#:631-921-9986 _ Email:snorklun@or)tonline.net Mailing Address:P.O._Box 780, Southold, NY 11971 CONTACT PERSON: Name: Tammy Lea/Sunation Solar Systems Mailing Address: 171 Remington Blvd.,Ronkonkoma,-NY!1779 Phone#: 631-750-9454 X35�� Email:permitting@sunation.com DESIGN PROFESSIONAL INFORMATION: Name: Mailing Address: Phone#: Email: CONTRACTOR INFORMATION:. Name:Scott Maskin/Sunation Solar Sy_%grnp_� Mailing Address:171 Remington Blvd.,_Ronkonkoma,_NY 11779 Phone#: 631-750-9454 Email: mittin-q@sunation.com DESCRIPTION OF PROPOSED CONSTRUCTION ❑New Structure ❑Addition ®Alteration ❑Repair ❑Demolition EstImate dCost ofProject: E Other(1)Tesla PowerWall battery to work w/existing solar system from BP#44263 $ Will the lot be re-graded? ❑Yes ®No Will excess fill be removed from premises? ❑Yes ®No 1 PROPERTY INFORMATION " Existing use of property:Residential Intended use of property: Residential Zone or use district in which premises is situated: Are there any covenants and restrictions with respect to this property? ❑Yes ®No IF YES, PROVIDE A COPY. '❑Check Box,'After Reading: The owner/contractor/design professional is,responsiblefor all drainage and storm water issues as provided by . Chapter-236 of the Town Code.APPLICATION IS HEREBY.MADE to the Building Department for the issuance of a Building Permit pursuantto the Building,Zone Ordinance of the Town of Southold,.Suffolk,County,New York and other applicable Laws,Ordinances or.Regulations,for the construction of buildings, additions,alterations or for removal or demolition as herein described:The applicant agrees to comply with all applicable laws,ordinances,building code; ,housing code and regulations and to admit authorized inspectors on premises and in buildings)for necessary inspections.False statements made herein.are punishable as a.Class A misdemeanor pursuant to Section 210AS.of the New:York State,Penal Law: t Application Submitted By(print name • ott Maskin BAuthorized Agent ❑Owner Signature of Applicant: Date: Si/ �.Zo 2/ STATE OF NEW YORK) SS: COUNTY OF Suffolk ) Scott Maskin being duly sworn,deposes and says that(s)he is the applicant (Name of individual signing contract)above named, (S)he is the Contractor (Contractor,Agent,Corporate Officer,etc.) of said owner or owners,and is duly authorized to perform or have performed the said work and to make and file this application;that all statements contained in this application are true to the best of his/her knowledge and belief;and that the work will be performed in the manner set forth in the application file therewith. Sworn before me this ! � day of C 20_2L kto_ Nota Public TAMMYLEA Notary Public,State of New Yolk Registration No.01LE6410842 PROPERTY OWNER AUTHORIZATION Commission Expilified In res November 2.20x4 (Where the applicant is not the owner) Stacey Norklun residing at 300 Gardiners Lane, Southold, NY 11971 do hereby authorize Scott Maskin to apply on my behalf to the Town of Southold Building Department for approval as described herein. Ownerl Signature Date J�bCkul 611 o f y-W o Print Owner's Name , 2 1FED�, BUILDING DEPARTMENT-Electrical Inspector TOWN OF SOUTHOLD :. . o . - Town Hall Annex- 54375 Main Road - PO Box 1179 Southold, New York 11971-0959 f Telephone (631) 765-1802 - FAX (631) 765-9502 ro-err@southoldtownn.aov seand&-southoldtownny-gov. APPLICATION FOR ELECTRICAL INSPECTL`ON ELECTRICIAN INFORMATION (All Information Required) Date: Company Name: : SUNation Solar Systems, Inc Name: Scoft Maskin License No.: 33412-ME email: permifting@stination.com Address: 171 Remin ton.BlYd.__Ronkonkoma .NY 11779 Phone No:: 63.1-750=9454 JOB SITE INFORMATION (All Information Required) Name: Stacey Norklun Address: 300 Gardiners Lane, Southold, NY 11971 Cross Street:. Phone No. 631.821:9986 BIdg.Permit#: email: snorklun@optonline,.net. Tax Map.Di trEet 1000 `. ._Section. 70 Block 8_ Lot 12 BRIEF DESCRIPTION OF WORK--Rle`e.Print Clearly) Installation of(1) Tesla Powetwall - Battery on-the,r Wlip owork I con'uncti_�n with-exisjting solar system - BP#44263__ K_ .: - _. :. . Circle All That Apply: Is job ready for inspection?: YES / NO Rough In Final Do you need a Temp Certificate?: YES / NO Issued On Temp Information: (All information required) Service Size 1 Ph 3 Ph Size: _A #Meters Old Meter# New Service- Fire Reconnect- Flood Reconnect-Service Reconnected- Underground -Overhead .#Underground Laterals 1 2 H Frame Pole Work done on Service? Y N Additional Information: PAYMENT__DUEWITH APPLICATION Request for Inspection Form.xls �cGa9-�. �s��� �-c- �,�,,s'�'� ,s��4� 2� � was I 2�c � �°�' t vo K workers' E o CERTIFICATE OF INSURANCE COVERAGE STATCmpensation Board DISABILITY AND PAID FAMILY LEAVE BENEFITS LAW PART 1.To be completed by Disability and Paid Family Leave Benefits Carrier or Licensed Insurance Agent of that Carrier 1 a.Legal Name&A'ddress of Insured(use street address only) 1 b.Business Telephone Number of Insured SUNATION SOLASYSTEMS INC 631-750-9454 171 REMINGTON BOULEVARD RONKONKOMA,NY 11779 1c.Federal Employer Identification Number of Insured Work Location of Insured(Only required if coverage is specifically limited to or Social Security Number certain locations in New York State,i.e.,Wrap-Up Policy) 753118816 2.Name and Address of Entity Requesting Proof of Coverage 3a.Name of Insurance Carrier (Entity Being Listed as the Certificate Holder) ShelterPoint Life Insurance Company Town of Southold 54375 Route 25 3b.Policy Number of Entity Listed in Box"I a" P.O. Box 1179 DBL243442 Southold, NY 11971 3c.Policy effective period 11/28/2019 to 11/27/2021 4. Policy provides the following benefits: © A.Both disability and paid family leave benefits. ❑ B.Disability benefits only. ❑ C.Paid family leave benefits only. 5. Policy covers: © A.All of the employer's employees eligible under the NYS Disability and Paid Family Leave Benefits Law. F1 B.Only the following class or classes of employer's employees: Under penalty of perjury,I certify that I am an authorized representative or licensed agent of the insurance carrier referenced above and that the named insured has NYS Disability and/or Paid Family Leave Benefits insurance coverage as described above. Date Signed 11/20/2020 By "a ot (Signature of insurance carrier's authorized representative or NYS Licensed Insurance Agent of that insurance carrier) Telephone Number 516-829-8100 Name and Title Richard White, Chief Executive Officer IMPORTANT: If Boxes 4A and 5A are checked,and this form is signed by the insurance carrier's authorized representative or NYS Licensed Insurance Agent of that carrier,this certificate is COMPLETE. Mail it directly to the certificate holder. If Box 4B,4C or 5B is checked,this certificate is NOT COMPLETE for purposes of Section 220,Subd.8 of the NYS Disability and Paid Family Leave Benefits Law. It must be mailed for completion to the Workers'Compensation Board, Plans Acceptance Unit, PO Box 5200, Binghamton, NY 13902-5200. PART 2.To be completed by the NYS Workers'Compensation Board(only if sox 4C or 56 of Part 1 has been checked) State of New York Workers' Compensation Board According to information maintained by the NYS Workers'Compensation Board,the above-named employer has complied with the NYS Disability and Paid Family Leave Benefits Law with respect to all of his/her employees. Date Signed By (Signature of Authorized NYS Workers'Compensation Board Employee) Telephone Number Name and Title Please Note:Only insurance carriers licensed to write NYS disability and paid family leave benefits insurance policies and NYS licensed insurance agents of those insurance carriers are authorized to issue Form DB-120.1.Insurance brokers are NOT authorized to issue this fonn. DB-120.1 (10-17) 111�j I I 11°°°1°°°°1°°1°°°°1°°°°°�IIIIII DB 120.1 (10-17) t DATE(MM/DDNYYY) A�" CERTIFICATE OF LIABILITY INSURANCE 02/11/2021 THIS CERTIFICATE IS ISSUED AS A MATTER OF INFORMATION ONLY AND CONFERS NO RIGHTS UPON THE CERTIFICATE HOLDER.THIS CERTIFICATE DOES NOT AFFIRMATIVELY OR NEGATIVELY AMEND, EXTEND OR ALTER THE COVERAGE AFFORDED BY THE POLICIES BELOW. THIS CERTIFICATE OF INSURANCE DOES NOT CONSTITUTE A CONTRACT BETWEEN THE ISSUING INSURER(S), AUTHORIZED REPRESENTATIVE OR PRODUCER,AND THE CERTIFICATE HOLDER. IMPORTANT: If the certificate holder is an ADDITIONAL INSURED,the policy(ies)must be endorsed. If SUBROGATION IS WAIVED,subject to the terms and conditions of the policy,certain policies may require an endorsement. A statement on this certificate does not confer rights to the certificate holder in lieu of such endorsement(s). PRODUCER CONTACT Joseph Price NAME: P Joseph P.Price Jr Insurance Brokerage Inc. PNHONE E t 631-509-4509 FAX No Priceagy.com AIL ADDRESS: Joseph@priceagy.com P.O.Box 171 INSURER(S)AFFORDING COVERAGE NAIC# Mt.Sinai, NY 11766 INSURER A: Southwest Marine&General Insurance Company 12294 INSURED INSURER B: New York Marine&General Insurance Comany 16608 SUNation Solar Systems Inc. INSURER C: Southwest Marine&General Insurance Company 12294 171 Remington Blvd. INSURER D: Ronkonkoma,NY 11779 INSURER E: INSURER F: COVERAGES CERTIFICATE NUMBER: REVISION NUMBER: THIS IS TO CERTIFY THAT THE POLICIES OF INSURANCE LISTED BELOW HAVE BEEN ISSUED TO THE INSURED NAMED ABOVE FOR THE POLICY PERIOD INDICATED. NOTWITHSTANDING ANY REQUIREMENT,TERM OR CONDITION OF ANY CONTRACT OR OTHER DOCUMENT WITH RESPECT TO WHICH THIS CERTIFICATE MAY BE ISSUED OR MAY PERTAIN,THE INSURANCE AFFORDED BY THE POLICIES DESCRIBED HEREIN IS SUBJECT TO ALL THE TERMS, EXCLUSIONS AND CONDITIONS OF SUCH POLICIES.LIMITS SHOWN MAY HAVE BEEN REDUCED BY PAID CLAIMS. INSR TYPE OF INSURANCE ADDL SUER POLICY EFF POLICY EXP LTR W POLICY NUMBER MM/DD/YYYY MMIDD/YYYY LIMITS X COMMERCIAL GENERALLIABILITY EACH OCCURRENCE $ 1,000,000 DAMAGE TO RENTED CLAIMS-MADE X OCCUR PREMISES RMSES Ea occurrence) $ 100,000 MED EXP(Any one person) $ 5,000 A X PK202100009827 02/11/2021 02/11/2022 PERSONAL&ADV INJURY $ 1,000,000 GEN'L AGGREGATE LIMIT APPLIES PER: GENERALAGGREGATE $ 2,000,000 X POLICY❑JECT PRO- F—]LOC PRODUCTS-COMP/OP AGG $ 2,000,000 OTHER: S AUTOMOBILE LIABILITY (CEO,Mom IN entDSINGLELIMIT $ 1,000,000 ANYAUTO BODILY INJURY(Per person) $ BIx ALL OWNED �/ SCHEDULED AU202100009974 02/11/2021 02/11/2022 BODILY INJURY AUTOS $ AUTOS /� AUTOS HIRED AUTOS NON-OWNED PROPERTYDAMAGE $ X AUTOS Per accident d $ UMBRELLA LIAB X OCCUR EACH OCCURRENCE S 3,000,000 C X EXCESS LIAR CLAIMS-MADE EX202100001777 02/11/2021 02/11/2022 AGGREGATE $ 3,000,000 DED I X I RETENTIONS 10,000 $ WORKERS COMPENSATION PER OTH- AND EMPLOYERS'LIABILITY Y/N STATUTE ER ANY PROPRIETOR/PARTNERIEXECUTIVE E.L.EACH ACCIDENT $ OFFICER/MEMBER EXCLUDED? N/A (Mandatory in NH) E.L.DISEASE-EA EMPLOYE $ If yes,describe under DESCRIPTION OF OPERATIONS below E.L.DISEASE-POLICY LIMIT $ A Installation Floater PK202100009827 02/11/2021 02/11/2022 Occurrence $100,000 DESCRIPTION OF OPERATIONS/LOCATIONS/VEHICLES(ACORD 101,Additional Remarks Schedule,maybe attached if more space is required) Description: Solar energy contractor,including operations&maintenance,and panel installation. Electrical work and oversight of subcontractors. Town of Southold is included as an additional insured as required by written contract and the CG 2012(State,Governmental agency,or Political subdivision permits or authorization)is included on the policy. CERTIFICATE HOLDER CANCELLATION SHOULD ANY OF THE ABOVE DESCRIBED POLICIES BE CANCELLED BEFORE THE EXPIRATION DATE THEREOF, NOTICE WILL BE DELIVERED IN Town of Southold ACCORDANCE WITH THE POLICY PROVISIONS. 54375 Main Road Southold,NY 11971 AUTHORIZED REPRESENTATIVE Joseph Price �` 1 @ 1988-2014 ACOMMORPORATION. All rights reserved. ACORD 25(2014/01) The ACORD name and logo are registered marks of ACORD t NY S I F 199 CHURCH STREET,NEW YORK,N.Y.10007-1100 New York State Insurance Fund I nySlf.Com CERTIFICATE OF WORKERS' COMPENSATION INSURANCE ^AAA^^ 753118816 w1mm-A GCG RISK MANAGEMENT INC 100 CHURCH STREET-SUITE 810 NEW YORK NY 10007 SCAN TO VALIDATE AND SUBSCRIBE POLICYHOLDER CERTIFICATE HOLDER SUNATION SOLAR SYSTEMS INC TOWN OF SOUTHOLD 171 REMINGTON BOULEVARD 54375 ROUTE 25 RONKONKOMA NY 11779 SOUTHOLD NY 11971 POLICY NUMBER CERTIFICATE NUMBERPOLICY PERIOD DATE Z 2160 670-2 914289 01/01/2021 TO 01/01/2022 12/15/2020 THIS IS TO CERTIFY THAT THE POLICYHOLDER NAMED ABOVE IS INSURED WITH THE NEW YORK STATE INSURANCE FUND UNDER POLICY NO. 2160 670-2, COVERING THE ENTIRE OBLIGATION OF THIS POLICYHOLDER FOR WORKERS' COMPENSATION UNDER THE NEW YORK WORKERS'COMPENSATION LAW WITH RESPECT TO ALL OPERATIONS IN THE STATE OF NEW YORK,EXCEPT AS INDICATED BELOW,AND,WITH RESPECT TO OPERATIONS OUTSIDE OF NEW YORK,TO THE POLICYHOLDER'S REGULAR NEW YORK STATE EMPLOYEES ONLY. IF YOU WISH TO RECEIVE NOTIFICATIONS REGARDING SAID POLICY, INCLUDING ANY NOTIFICATION OF CANCELLATIONS, OR TO VALIDATE THIS CERTIFICATE, VISIT OUR WEBSITE AT HTTPS://WWW.NYSIF.COM/CERT/ CERTVAL.ASP.THE NEW YORK STATE INSURANCE FUND IS NOT LIABLE IN THE EVENT OF FAILURE TO GIVE SUCH NOTIFICATIONS. THIS CERTIFICATE IS ISSUED AS A MATTER OF INFORMATION ONLY AND CONFERS NO RIGHTS NOR INSURANCE COVERAGE UPON THE CERTIFICATE HOLDER. THIS CERTIFICATE DOES NOT AMEND,EXTEND OR ALTER THE COVERAGE AFFORDED BY THE POLICY. NEW YORK STATE INSURANCE FUND DIRECTOR,INSURANCE FUND UNDERWRITING VALIDATION NUMBER: 97111331 uIV 11 II IN I III 111111111111111111m Hill Hill 11111 HiI111111 1111111111 ill II11111m 111111111111111 I II I II II 00000000000088657110 Form WC-CERT-NOPRINT Vemion3(08/29/2019)[WC Policy-216067021 U-26.3 63 [00000000000088657110]10001-000021606702][##Z][15532-36][Cert_NoP-CPRT_1][01-00001] rl 1 f RECEIPT SUFFOLK COUNTY GOVERNMENT DEPARTMENT OF LABOR, LICENSING,AND CONSUMER AFFAIRS ACTING COMMISSIONER ROSALIE DRAGO P.O. BOX 6100, HAUPPAUGE, NY 11788 (631) 853 4600 Today Date: 02/25/2020 Application: H-44104 Application Type: Home Improvement License Receipt No. 402742 Payment Method Ref. Number Amount Paid Payment Date Cashier ID Comments Check 31300 $400.00 02/25/2020 GAB Renewal Contact Info: SUNATION SOLAR SYSTEMS INC SCOTT A MASKIN 171 REMINGTON BLVD, RONKONKOMA, NY 11779 Work Description: Suffolk county Dept.of 'y Labor,Licensing&consumer Affairs HOME IMPROVEMENT LICENSE Name i SCOTT A MASKIN Business Name This certifjes that the SUNATION SOLAR SYSTEMS INC bearer is duly licensed by the County or suKolk 'License Number:H-44104 I Rosalie Drago Issued: 03/06/2008 1 Acting Commissioner Expires: 03/01/2022 '� �.z• �'b� —'c.'''�_yc�. � .r';^l;..;rr—Ti.�s�-a,,r ._—.-:� ,�J,�,•� "`S1 tom'.- u/ --�. tY,i .."�` g .e( yc� _-- - �� .� };. J _"ti.;'...^�/ .Y �4,_„�., , '�CF ,err..« �� -✓. - tr r- II i, - - v •� � r NASSAU COUNTY j DEPARTMENT OF CONSUMER AFFAIRS -240 OLD COUNTRY ROAD, MIN.EOLA, NY 1.1501 :. WWW NASSAUCOUNTY'NY G_OV '• _ SUNATION SOLAR SYSTEMS INC 171 Remington Blvd , Ronkonkoma,NY 11779 1 View licensing information' by scanning the link above 4;TIO:,N SOL R SYSTEf1�S fIVC ' Flome_om; roveren;t p i _ .I 1 . r- t, _ r t Does Not Constitute a Plumbing or Electrical License s The issuance and retention of this license is contingent upon the licensee's compliance with the laws of The State of New York and the County of Nassau,the rules and regulations of the office of Consumer Affairs,and a the rules and regulations of the all other New York State and Nassau County agencies,'now in effector which may hereafter be enacted. _ - 16 r . . DATE OF-ISSUE: 03/01/2008 EXPIRATION DATE: 02/28/2022 GRE 1 ` CQ I ION •fix t. �� - _ r 00, This License Must be Conspicuously Displayed .y '�ty" t. . ra_�'-.. � - - •�'.xac:r=--snz-1w«...B.c2'� '...^_���-......�+ �x. �, :�,`X' Fisher Engineering Services, P.C. 509 Sayville Blvd- Sayville -New York 11782 Phone: (631) 786-4419 May 14,2021 Attention: Town of Southold Building Department Subject: Engineer Statement for Energy Storage System Installation Norklun Residence-300 Gardiners Lane, Southold,NY 11971 I have reviewed and certify that the manufacturer's guidelines and equipment for the Energy Storage System being added to the existing photovoltaic system for the above residence meet the requirements for the 2018 International Residential Code(2018 IRC), 2020-Residential Code of New York State (2020 RCNYS),Long Island Unified Solar Permit Initiative(LIUSPI),2017 National Electric Code,NFPA 70/2014 I hope that this letter serves and meets with the approval of the Building Department. Sincerely, /r r i.._ 9 1 -- IpF NE ly 1V William G. Fisher,P.E. stir ' re ` OCCUPANCY O Licensed Professional Engineer 4. USE FU r 1 _WITHOUT CERTRCA�. .. AAIROI ED AS NO ED OF OCCUPANCY DATB.P.#FEE: E BY: NOTI 6UILDING DEPARTMENT AT . 765-1802' 8 A TO 4 PM FOR THE COMPLY WITH ALL CODES OF FOLLOWING INSPECTIONS: NEW YORK STATE & TOWN CODES 1. FOUNDATION - TWO REQUIRED AS REQUIRED AND CONDITIONS OF FOR POURED CONCRETE 2. ROUGH`- FRAMING & PLUMBING } q� 3. INSULATION 4. FINAL - CONSTRUCTION MUST NTNG BOARD BE COMPLETE -n.;. ` oSQUWM70WMSTEES ALL CONSTRUCTION SHALL MEET THE REQUIREMENTS OF THE CODES OF NEW YORK STATE. NOT RESPONSIBLE FOR DESIGN OR CONSTRUCTION ERRORS. Architectural Design•Residential•Light Commercial Additions-Extensions-Conversions ELECTRICAL Construction Estimates/Oversight-Expediting•Inspections �R9SPECTOON REQUERED T S S L Fi Powerwall 2 AC & Backup Gateway: Permitting & Inspection Support for Tesla Home Energy Storage System Summary Description Powerwall 2 AC (Powerwall) and the Backup Gateway (Gateway) comprise a state-of-the-art battery system for residential and light commercial applications. Together, they enable energy stored from the grid (or renewable sources, like solar), to be used at night or to provide backup power in a grid outage. Powerwall arrives at the job site as a factory assembly that includes: • Lithium-ion battery cells • Isolated DC/DC converter(to step up the battery's voltage) • Integrated AC inverter(to convert low voltage DC from the battery to AC for the home or business) • Liquid thermal management system (to maximize battery performance) The battery cells inside Powerwall are the components closest to a conventional battery. No one is ever exposed to these cells because they are electrically and physically isolated from contact at all times. All Powerwall installations require the Gateway, which serves several functions: • Monitors the grid for outage • Instantly isolates Powerwall from the grid (during grid outage, or when providing backup power) • Communicates with the Powerwall (via communication cables) • Monitors & manages how energy is used (including self-consumption, load-shifting & backup) • Functions as both service entrance and disconnect(when installed with a breaker) When a grid outage is detected, the Gateway instantly isolates Powerwall from the grid using a microprocessor-controlled power contactor. MAIN PANEL BACKUP GATEWAY _ SOLAR I - —- - UTILITY INVERTE METER f. �a lily T 2 s 5 POWERWAL �1 Powerwall Installation Example for Whole-Home Backup (Gateway as Service Entrance and Disconnect) Key NEC References Applicable NEC references may vary with the adopted edition of the NEC and site-specific configurations. Generally, Chapters 1 through 4 as modified by the following NEC sections will apply to Powerwall and the Gateway: Article or Section Description NEC Edition 705 Interconnected Electric Power Production Sources 2014,2017 690.10 Stand Alone Systems 2014 690.71 Storage Batteries 2014 710 Stand Alone Systems 2017 706 Energy Storage Systems 2017 t. Most Common Configurations .............. I Solar -- --- 111 --- a -- [0-1 --- 0, Solar inverter - ..................... Sub Sub panel Backup Gateway Main panel Utility meter Grid n O Powerwall Backup loads Home loads Partial Home Backup (with or without solar) cdron,,. lr^I Solar D o r Solar Inverter Main panel Backup Gateway Service Utility meter Grid Disconnect Powerwall Whole home backup Whole Home Backup (with or without solar) ------- ----- ,,., Solar I 7o Solar inverter Main panel Backup Gateway Utility meter Grid including service disconnect Powerwall Whole home backup Whole Home Backup (using Gateway as Service Entrance&Disconnect, with or without solar) 9 Key Specifications & Certifications (Full datasheets provided separately) Powerwall Electrical Energy 13.5 kWh AC Voltage(Nominal)and 120/240 V:24 A Maximum Continuous Current Frequency(Nominal) 60 Hz Power, max continuous 5 kW(charge and discharge) Power, peak(10 seconds) 7 kW(charge and discharge) Overvoltage Category Category III Max Supply Fault Current 10 kA Max Output Fault Current 32 A Powerwall Environmental &Certifications Operating Temperature -20°C to 50°C(-4°F to 122°F) Enclosure Type NEMA 3R Ingress Rating IP67(battery and power electronics) IP56 (wiring) Wet Location Rating Yes Seismic Rating AC156, IEEE 693-2005(high) Safety Certifications(partial list) UL 1642,UL 1741SA, UL 1973, UL 9540 NRTL Intertek/ETL Powerwall Mechanical Height 45.3 in Width 29.7 in Depth 6.1 in Weight 276 lbs Gateway Electrical Disconnect Current 200 A Overcurrent Protection Breaker 100-200 A(Service Entrance configuration) Overvoltage Category Category IV Fault Current Withstand Rating 10 kAIC(Configurable to 22 kAIC) AC Meter I Revenue grade Service Rating Suitable for Use as Service Equipment Gateway Environmental &Certifications Operating Temperature -20°C to SO°C(-4°F to 122°F) Enclosure Type NEMA 3R Ingress Rating IP44 Safety Certifications(partial list) UL 1642,UL 1741, IEC 61000-6-3, IEC 62109-1 NRTL Intertek/ETL Gateway Mechanical Height 29.1 in Width 14.9 in Depth 5.1 in Weight 36 lbs i I Frequently Asked ;Questions Are Powerwall and the Gateway listed equipment? Yes. Powerwall and the Gateway are listed to the applicable product standards by Intertek/ETL, an OSHA- approved Nationally Recognized Testing Laboratory(NRTL). See the table above for a partial list of certifications. If physical certificates are required, please email powerwall(a)tesla.com. I i What safety features does;Powerwall include to avoid thermal runaway? To resist single cell thermal runaway, Powerwall complies with requirements in UL 1973 and IEC 62619. For example, UL 1973 includes an internal fire test that ensures a runaway in one cell can't propagate to neighboring cells. Onboard sensors and the battery management system (BMS) provide multiple layers of protection to detect and stop precursors to thermal runaway. i I' How much does the AC Powerwall weigh, and will it comply with seismic requirements when wall-mounted? Powerwall weighs 276 lbs. and complies with seismic requirements when wall-mounted according to manufacturer's instructions. It has been evaluated to ICC Acceptance Criteria AC156 for seismic requirements. Installationmethods also comply with IEEE Standard 693-2005 for seismic design. Is guidance available for emergency personnel working around a Powerwall that has been physically damaged? Yes. An Emergency Response Guide is available on request. Emergency and maintenance personnel can work safely around Powerwall after opening the system's AC disconnect and/or breaker on the grid side. Water is the recommended suppressant in case of a fire involving a lithium-ion battery and will not exacerbate a fire involving!Lithium-ion cells. Does Powerwall require additional venting to prevent the accumulation of flammable or explosive gases? No. Unlike conventional lead-acid batteries, which produce hydrogen gas, the individual cells in the Powerwall are hermetically]sealed and do not require additional ventilation. NEC [480.9(A)], NFPA 1 Chapter 52, and the 2018 IFC, all make clear venting is not required for lithium-ion batteries. How much electrolyte is in:Powerwall? Tesla lithium-ion battery packs do not contain free liquid electrolyte and do not pose a liquid release hazard. If an enclosure is punctured, there are no electrolytes to "spill" onto the floor. Secondary containment measures are not needed. NOTE: IFC Section 608 does not require spill control or neutralization for lithium-ion battery systems. Secondary containment is not applicable or required for this technology. Is Powerwall's battery pack low voltage? Yes. The internal battery pack operates at less than 50 VDC nominal. Unlike legacy battery systems, Powerwall is a fully enclosed, factory-listed assembly with no accessible battery terminals or live parts. Powerwall's output is AC and matches that of the serving utility. Powerwall's onboard inverter functions exactly like a solar PV inverter. I. Are the working clearances outlined in the NEC 110.26 applicable to Powerwall? No. Because Powerwall will never require examination,-adjustment, servicing, or maintenance while energized, working clearances in Article 110.26 do not apply. I i p j .. Does Powerwall require a separate disconnect? No. Powerwall's onboard switch disconnects all ungrounded conductors and complies with Article 690.71 (2014) and 706.7 (2017). NOTE: These articles require a second disconnecting means at the connected equipment when: • Separated by a wall or partition, or • Input and output terminals are more than 5ft away. This second disconnect will typically be the 2P/30A breaker installed at the point of connection. Can Powerwall be installed outdoors? Yes. Powerwall is a NEMA Type 3R enclosure and can be installed outdoors. What prevents Powerwall from back-feeding the utility grid during a power outage? During a power outage, the Gateway automatically isolates the home from the grid per IEEE 1547. Powerwall and Gateway are both listed to UL 1741 because they are subject to the same anti-islanding rules as a typical grid-interactive PV system. Gateway reconnects to the grid once it is stable for at least 5 minutes. What is the maximum number of circuits that can be backed up for a single Powerwall? The number of circuits that a single Powerwall can back up isn't specified. The duration of backup power is a function of Power* Time, stated in Watt-hours. The maximum continuous output at any given time is limited to 5000W, with a peak output capacity of 7000W for 10 seconds. The number of loads and circuits the customer wants backed up will determine the overall system size, including total number of Powerwalls required. Is Powerwall required to be capable of backing up all the home's loads simultaneously? No. When Powerwall is operating as a stand-alone system, as permitted in 705.40, available current must be "equal to or greater than the load posed by the largest single utilization equipment connected'to the system" (not including general lighting loads). Guidance on system sizing may be found in NEC Articles 690.10 [2014] and 710.15(A) [2017]. When in backup mode,what happens if the load exceeds Powerwall's rated output current? Powerwall automatically shuts down. Powerwall's inverter is an inherently power- and current-limited device. If Powerwall is operating at full rated output current and more load is applied, it simply cannot produce more current. The inverter will sense the corresponding voltage change and immediately shut off. There is no risk for over-discharging above the rated nameplate of Powerwall. Inspection Guide In addition to a simpler installation process, Powerwall and Gateway systems are easier to review for safety and code compliance. Primary code references are from the 2014 NEC. Additional references [in brackets] are from the 2017 NEC. General Requirements • Listing verification - Equipment bears the mark of a Nationally Recognized Testing Laboratory. 90.7, [706.5] • Manufacturer's installation instructions followed.110.3(B) • The completed installation appears to be neat and of good workmanship.110.12 • Working clearances are in accordance with 110.26 for any components that are "likely to require examination, adjustment, servicing, or maintenance while energized." o Note that Powerwall has no accessible DC battery interconnections within the unit, and does not require maintenance while energized. o The ventilation clearance requirements found in 480.9 do not apply to this technology. Tesla Powerwall complies with [706.10(A)] using a pre-engineered ventilation solution. Wiring Methods • All conduit and fittings properly installed per the respective article in Chapter 3 of the NEC. • Conduit is adequately secured and supported. 3xx.30 • Raceways containing insulated circuit conductors 4 AWG and larger are protected from abrasion by an identified fitting providing a smoothly rounded insulating surface. 300.4(G) • Residential Energy Storage equipment grounding conductor is identified as either bare, green, or green with continuous yellow stripe(s). 250.119 • Grounded conductor identified properly.200.6(A), (B) Overcurrent Protection and Wire Sizing Conductors and OCPDs are adequately sized per Articles 240 and 310 unless modified by 690.9(A), 690.10(B), or [706.20] and [706.21]. Disconnecting Means • Disconnecting means are provided to disconnect the energy storage device from all ungrounded conductors of all sources. 690.15 and/or[706.7].This requirement is met by the integrated disconnect switch. • Where the energy storage device output terminals are more than 1.5 m (5 ft) from the connected equipment, or where output circuits pass through a wall or partition,a disconnecting means and overcurrent protection shall be provided at the energy storage device end of the circuit. 690.71(H), [706.7(E)]. The Powerwall complies with both the letter and the intent of the NEC: o As previously mentioned, the Powerwall is an inherently current-limiting device that will not contribute fault currents to the AC output circuit. It is important to note that the 2017 NEC has removed this overcurrent requirement altogether and clarified that the intent was to protect the DC conductors of a conventional battery. o The integrated disconnect satisfies the requirement for the energy storage device end of the circuit. o If the integrated disconnect is not within sight of the connected equipment, the 2P/30A breaker installed at the point of connection is the additional disconnect required by 690.71(H)(4). Labeling • A sign that indicates the type and location of on-site optional power sources is placed at building utility service-entrance location. 705.10, [706.11] • Equipment fed by multiple sources are marked to indicate all sources of supply. 705.12(D)(3). • Where the integrated disconnect and the 2P/30A breaker are not within sight, a plaque or directory shall be installed at each disconnect indicating the location of the other disconnecting means. 690.71(H)(5) or [706.7(E)(5)]. Additional resources For compliance questions, a complete list of FAQs, or to request a Powerwall presentation for your building department, fire department or trade group (such as ICC and IAEI chapters) email CodeComoliance(o)tesla.com. SEAC, the Sustainable Energy Action Committee, is a not-for-profit partnership of AHJs, testing laboratories and industry. SEAC has created free guidelines for building officials to plan check, correct and inspect storage battery systems for one- and two-family dwellings, available for download here. POWERWALL Tesla Powerwall is a fully-integrated AC battery system for residential or light commercial use. Its rechargeable lithium-ion ( T = 5 L n battery pack provides energy storage for solar self-consumption, time-based control,and backup. I i Powerwall's electrical interface provides a simple connection to any home or building.Its revolutionary compact design achieves market-leading energy density and is easy to install,enabling owners to quickly realize the benefits of reliable,clean power. PERFORMANCE SPECIFICATIONS MECHANICAL SPECIFICATIONS AC Voltage(Nominal) 120/240 V Dimensions' 1150 mm x 755 mm x 147 mm --- -- — --- —— (45.3 in x 29.6 in x 5.75 in) Feed-In Type— Split Phase Weight' 114 kg(251.3 lbs) Grid Frequency 60 Hz -------- - -- - Mounting options Floor or wall mount Total Energy 14 kWh - -- 'Dimensions and weight differ slightly if manufactured before March 2019. Usable Energy 13.5 kWh Contact Tesla for additional information. Real Power,max continuous 5 kW(charge and discharge) 753 mm 1mm (29.6 in) (5.5.75 in) Real Power,peak(10 s,off-grid/backup) 7 kW(charge and discharge) Apparent Power,max continuous 5.8 kVA(charge and discharge) Apparent Power,peak(10 s,off-grid/backup) 7.2 kVA(charge and discharge) T e 0 L R Maximum Supply Fault Current 10 kA Maximum Output Fault Current 32 A Overcurrent Protection Device 30A 1150 mm (45.3 in) Imbalance for Split-Phase Loads 100% Power Factor Output Range +/-1.0 adjustable Power Factor Range(full-rated power) +/-0.85 Internal Battery DC Voltage 50 V Round Trip Efficiency'.; 90% Warranty 10 years ENVIRONMENTAL SPECIFICATIONS 'Values provided for 25"C(77"F),3.3 kW charge/discharge power. zln Backup mode,grid charge power is limited to 3.3 kW. Operating Temperature -20°C to 50°C(-4°F to 122°F) 'AC to battery to AC,at beginning of life. Recommended Temperature 0°C to 30°C(32°F to 867) Operating Humidity(RH) Up to 100%,condensing COMPLIANCE INFORMATION --- Storage Conditions -20°C to 30°C(-4°F to 86°F) Certifications UL 1642,UL 1741,UL 1973, Up to 95%RH,non-condensing UL 9540,IEEE 1547,UN 38.3 State of Energy(SoE):25%initial Grid Connection Worldwide Compatibility Maximum Elevation 3000 m(9843 ft) Emissions FCC Part 15 Class B,ICES 003 Environment Indoor and outdoor rated Environmental RoHS Directive 2011/65/EU Enclosure Type NEMA 3R Seismic AC156,IEEE 693-2005(high) Ingress Rating IP67(Battery&Power Electronics) - --- - --- IP56(Wiring Compartment) Wet Location Rating Yes Noise Level @ 1m <40 dBA at 30°C(86°F) T = 5 L Fi TESLA.COM/ENERGY TYPICAL SYSTEM LAYOUTS WHOLE HOME BACKUP ----------------- Optional; � I � Solar o �^0 1 0 Solar inverter ----------------------- Main panel Backup Gateway Utility meter Grid including service disconnect T 5 5 L n O Powerwall Whole home backup PARTIAL HOME BACKUP --------------------------- Optional � I � Solar , O Solar inverter ------------------------ Sub panel Backup Gateway Main panel Utility meter Grid T=5 L n Powerwall Backup loads Home loads T = 5 L n NIA-BACKUP-2019-06-11 TESLA COM/ENERGY r Intertek AUTHORIZATION TO MARK This authorizes the application of the Certification Mark(s) shown below to the models described in the Product(s) Covered section when made in accordance with the conditions set forth in the Certification Agreement and Listing Report. This authorization also applies to multiple listee model(s) identified on the correlation page of the Listing Report. This document is the property of Intertek Testing Services and is not transferable. The certification mark(s) may be applied only at the location of the Party Authorized To Apply Mark. Applicant: Tesla Motors, Inc Manufacturer: Tesla Motors, Inc Address: 3500 Deer Creek Road, Address: Electric Avenue Palo Alto, CA 94304 Sparks, Nevada 89434 Country: USA Country: USA Contact: Mr. Jonathan McCormick Contact: John Paul Jose Phone: (650) 391-7144 Phone: (775)276-7604 FAX: NA FAX: NA Email: jmccormick@tesla.com Email: jojose@tesiamotors.com Party Authorized To Apply Mark: Same as Manufacturer Report Issuing Office: Cortland NY 13045 LLvAfk Control Number: 5005998 Authorized by: for Dean Davidson, Certification Manager OOT US Intertek This document supersedes all previous Authorizations to Mark for the noted Report Number. This Authorization to Mark is for the exclusive use of Intertek's Client and is provided pursuant to the Certification agreement between Intertek and its Client.Intertek's responsibility and liability are limited to the terms and conditions of the agreement.Intertek assumes no liability to any party,other than to the Client in accordance with the agreement,for any loss,expense or damage occasioned by the use of this Authorization to Mark.Only the Client is authorized to permit copying or distribution of this Authorization to Mark and then only in its entirety.Use of Intertek's Certification mark is restricted to the conditions laid out in the agreement and in this Authorization to Mark.Any further use of the Intertek name for the sale or advertisement of the tested material,product or service must first be approved in writing by Intertek.Initial Factory Assessments and Follow up Services are for the purpose of assuring appropriate usage of the Certification mark in accordance with the agreement,they are not for the purposes of production quality control and do not relieve the Client of their obligations in this respect. Intertek Testing Services NA Inc. 545 East Algonquin Road,Arlington Heights, IL 60005 Telephone 800-345-3851 or 847-439-5667 Fax 312-283-1672 Inverters, Converters, Controllers And Interconnection System Equipment For Use With Distributed Standard(s): Energy Resources[UL 1741:2010 Ed.2+R:07Sep2016] Standard For Energy Storage Systems And Equipment[ANSI/CAN/UL 9540:2016 Ed.1] Product: AC Powerwall Models: AC Powerwall 2.0 ATM for Report 102591059CRT-001d Page 1 of 1 ATM Issued:23-Feb-2017 EO 16.3.15(1-Jul-16)Mandatory T E S L rl Powerwall 2 AC & Backup Gateway: Permitting & Inspection Support for Tesla Home Energy Storage System Summary Description Powerwall 2 AC (Powerwall) and the Backup Gateway (Gateway) comprise a state-of-the-art battery system for residential and light commercial applications. Together, they enable energy stored from the grid (or renewable sources, like solar), to be used at night or to provide backup power in a grid outage. Powerwall arrives at the job site as a factory assembly that includes: Lithium-ion battery cells Isolated DC/DC converter(to step up the battery's voltage) Integrated AC inverter (to convert low voltage DC from the battery to AC for the home or business) Liquid thermal management system (to maximize battery performance) The battery cells inside Powerwall are the components closest to a conventional battery. No one is ever exposed to these cells because they are electrically and physically isolated from contact at all times. All Powerwall installations require the Gateway, which serves several functions: Monitors the grid for outage Instantly isolates Powerwall from the grid (during grid outage, or when providing backup power) Communicates with the Powerwall (via communication cables) Monitors & manages how energy is used (including self-consumption, load-shifting & backup) Functions as both service entrance and disconnect(when installed with a breaker) When a grid outage is detected, the Gateway instantly isolates Powerwall from the grid using a microprocessor-controlled power contactor. 1 MAIN PAN4 6ACKi3P GATEWAY SOS LAR lfTfLkl1 MUERTE METER i POWE'dr WAC . I i I. Powerwall Installation Example for Whole-Horne Backup (Gateway as Service Entrance and Disconnect) Key NEC References Applicable NEC references may vary with the adopted edition of the NEC and site-specific configurations. Generally, Chapters 1 through 4 as modified by the following NEC sections will apply to Powerwall and the Gateway: Article or Section --Description NEC Edition 705 Interconnected Electric Power Production Sources 2014,2017 690.10 Stand Alone Systems 2014 690.71 Storage Batteries 2014 710 Stand Alone Systems 2017 706 Energy Storage Systems 2017 Key Specifications & Certifications (Full datasheets provided separately) Powerwall Electrical Energy 13.5 kWh AC Voltage (Nominal) and 120/240 V: 24 A Maximum Continuous Current Frequency (Nominal) 60 Hz Power, max continuous 5 kW (charge and discharge) Power, peak(10 seconds) 7 kW (charge and discharge) Overvoltage Category Category III Max Supply Fault Current 10 kA Max Output Fault Current 32 A Powerwall Environmental & Certifications Operating Temperature -20°C to 50°C(-4°F to 122°F) Enclosure Type NEMA 3R Ingress Rating IP67 (battery and power electronics) IP56 (wiring) Wet Location Rating Yes Seismic Rating AC156, IEEE 693-2005 (high) Safety Certifications (partial list) UL 1642, UL 1741SA, UL 1973, UL 9540 NRTL Intertek/ETL Powerwall Mechanical Height 45.3 in Width 29.7 in Depth 6.1 in Weight 276 lbs Gateway Electrical Disconnect Current 200 A Overcurrent Protection Breaker 100-200 A(Service Entrance configuration) Overvoltage Category Category IV Fault Current Withstand Rating 10 kAIC(Configurable to 22 kAIC) AC Meter Revenue grade Service Rating I Suitable for Use as Service Equipment Gateway Environmental & Certifications Operating Temperature -20°C to 50°C (-4°F to 122°F) Enclosure Type NEMA 3R Ingress Rating IP44 Safety Certifications (partial list) UL 1642, UL 1741, IEC 61000-6-3, IEC 62109-1 NRTL Intertek/ETL Gateway Mechanical Height 29.1 in Width 14.9 in Depth 5.1 in Weight 36 lbs f . Does Powerwall require a separate disconnect? No. Powerwall's onboard switch disconnects all ungrounded conductors and complies with Article 690.71 (2014) and 706.7 (2017). NOTE: These articles require a second disconnecting means at the connected equipment when: Separated by a wall or partition, or Input and output terminals are more than 5ft away. This second disconnect will typically be the 2P/30A breaker installed at the point of connection. Can Powerwall be installed outdoors? Yes. Powerwall is a NEMA Type 3R enclosure and can be installed outdoors. What prevents Powerwall from back-feeding the utility grid during a power outage? During a power outage, the Gateway automatically isolates the home from the grid per IEEE 1547. Powerwall and Gateway are both listed to UL 1741 because they are subject to the same anti-islanding rules as a typical grid-interactive PV system. Gateway reconnects to the grid once it is stable for at least 5 minutes. What is the maximum number of circuits that can be backed up for a single Powerwall? The number of circuits that a single Powerwall can back up isn't specified. The duration of backup power is a function of Power * Time, stated in Watt-hours. The maximum continuous output at any given time is limited to 5000W, with a peak output capacity of 7000W for 10 seconds. The number of loads and circuits the customer wants backed up will determine the overall system size, including total number of Powerwalls required. Is Powerwall required to be capable of backing up all the home's loads simultaneously? No. When Powerwall is operating as a stand-alone system, as permitted in 705.40, available current must be "equal to or greater than the load posed by the largest single utilization equipment connected to the system" (not including general lighting loads). Guidance on system sizing may be found in NEC Articles 690.10 [2014] and 710.15(A) [2017]. When in backup mode, what happens if the load exceeds Powerwall's rated output current? Powerwall automatically shuts down. Powerwall's inverter is an inherently power- and current-limited device. If Powerwall is operating at full rated output current and more load is applied, it simply cannot produce more current. The inverter will sense the corresponding voltage change and immediately shut off. There is no risk for over-discharging above the rated nameplate of Powerwall. Inspection Guide In addition to a simpler installation process, Powerwall and Gateway systems are easier to review for safety and code compliance. Primary code references are from the 2014 NEC. Additional references [in brackets] are from the 2017 NEC. General Requirements © Listing verification - Equipment bears the mark of a Nationally Recognized Testing Laboratory. 90.7, [706.5] • Manufacturer's installation instructions followed. 110.3(B) ® The completed installation appears to be neat and of good workmanship. 110.12 • Working clearances are in accordance with 110.26 for any components that are "likely to require examination, adjustment, servicing, or maintenance while energized." o Note that Powerwall has no accessible DC battery interconnections within the unit, and does not require maintenance while energized. o The ventilation clearance requirements found in 480.9 do not apply to this technology. Tesla Powerwall complies with [706.10(A)] using a pre-engineered ventilation solution. PLAN KEY P��OF�N�jy� Pv-I SITE PLAN E-I ELECTRICAL ONE LINE DIAGRAM N L-I LABELING SCHEMATIC o�P�F 0 i 4659 , G-1 PHOTOS FRONT OF HOUSE T-t ESS LOCATION FISHER ENGII,EE NIG SERV LES,P.G. 509 9AYVILI.E BLVD I uu1 T-2 ELEVATION snrnLLE. IAC@IDE NO.•lY6] •N-1pi-��1] SUNT tion SUNATION SOLAR SYSTEMS 111 REMINGTON DLVD. RONKONKOMA KY.IIll9 NSTAI I E `� EXISTING PV SYSTEM INSTALLEDR j`•/ NUMER CUSTOMER INFO NORKLUN RESIDENCE UTILITY METER - ® - SERVICE DISCONNECT - 9D 300 T�oHOLD, NY 11911 LANE SOUTH OLD, SERVICE PANEL - ® B NU ER WIFI ROUTER - VENT PIPE - E) 00352 LG MODEL MONOX LG310QIC-v5 INVERTER - ® IQ DATE 310 WATT EA. IQ COMBINER W/ ENVOY - . . r == 5.12.2021 a„ ' G 66.9"L X 40"W X 1.51"D, 18.58 FTz ENVOY MONITORING - ® n JOB NOTES 38.58#/MODULE (2.i#/SF)05/2019 PANEL PHOTOVOLTAIC - ® S I. N/A AC DISCONNECT - ® B S U MODULE (2E)LG3100IC-V5 (EXT.) MICRO-INVERTER (20101PLUS-l2-2-Us SUPPLY SIDE CONNECTION - � GW BRANCH k1 I(I)KI3) SENSE MONITOR - BRANCH N2 I(IXI3) RACKING SNAP'N`RACK-ULTRA RAIL EV CHARGER - ALL - � <26)EXISTING PW PACKAGE STANDARD TESLA POWERW III - SYSTEM RATING(DC) 9.62 KW TESLA GATEWAY - Q PV MODULES BACK OF HOUSE EST.PRODUCTION(AC) 9,425 KWH/YR EXTERIOR LOCATION EST.PRODUCTION SOURCE AURORA CEXT.) SPECIAL ATTACHMENTS N/A IST FLOOR LOCATION - �_*> BASEMENT LOCATION - ce> GARAGE LOCATION - W ADDITIONAL MATERIALS I. N/A BUILDING REVIEW NOTE NOTES TOWN BUILDING PLANS EXAMINER HAS RECEIVED THE ENCLOSED I. THIS ENERGY STORAGE SYSTEM (ESS)HAS BEEN DESIGNED TO DOCUMENT FOR MINIMUM ACCEPTABLE PLAN SUBMITTAL MEET ALL CURRENT AND APPLICABLE DESIGN PARAMETERS SET REQUIREMENTS OF THE TOWN AS SPECIFIED IN THE BUILDING AND/OR FORTH BY THE 2020 RESIDENTIAL CODE OF NEW YORK STATE. RESIDENTIAL CODE OF THE STATE OF NEW YORK. THIS REVIEW DOES AN IN DEPTH DESCRIPTION OF EACH APPLICABLE CODE DRAWN BY NOT GUARANTEE COMPLIANCE WITH THAT CODE. THAT RESPONSIBILITY REFERENCE AND EXCEPTION FOR ANY COCIRS IS DEPICTED ON SEAN 15EATTIE IS GUARANTEED UNDER THE SEAL AND SIGNATURE OF THE NEW YORK THE T-I PLATE OF THIS DRAWING PACKAGE, REVISION STATE LICENSED DESIGN PROFESSIONAL OF RECORD. THAT SEAL AND DATE DESIGNER NOTE SIGNATURE HAS BEEN INTERPRETED AS AN ATTESTATION THAT, TO THE 2. PER THE NYSERDA REBATE PROGRAM, THE. PROPOSED ENERGY FULL HOUSE ROOF PLAN >oc>011>0< WA MIA BEST OF THE LICENSEE'S BELIEF AND INFORMATION THE WORK IN STORAGE SYSTEM SHALL BE INSTALLED AND CONFIGURED FOR SCALE N.TS DOCUMENT IS . . Xxxx NIA N/A ONLY, MEANING THAT ONLY DURING LOSS OF GRID • ACCURATE POWER WILL THE ENERGY STORAGE SYSTEM TURN ON TO POWER Xx>oc N/A NIA CONFORMS WITH GOVERNING CODES APPLICABLE AT THE TIME OF THE LOADS WITHIN THE DWELLING. Xxxx WA wA THE SUBMISSION • CONFORMS WITH REASONABLE STANDARDS OF PRACTICE AND THIS ENERGY STORAGE HAS BEEN DESIGNED TO MEET THE MINIMUM SCALE: WITH VIEW TO THE SAFEGUARDING OF LIFE, HEALTH, PROPERTY AND 3. THE PROPOSED ENERGY STORAGE SYSTEM SHALL BE PUBLIC WELFARE IS THE RESPONSIBILITY OF THE LICENSEE INTERCONNECTED TO AN EXISTING PV SYSTEM INSTALLED DESIGN STANDARDS FOR BUILDING AS DESCRIBED WTIHIN THE 2020 N.T.S. PERMITTED BY EITHER SUNATION OR OTHER CONTRACTOR. NO NEW YORK STATE RESIDENTIAL CODE. CHANGES SHALL BE MADE TO THE PHYSICAL LAYOUT OF THE Pv TITLE:817E PLAN SYSTEM. PV m I o F IV �P\\om C•�s��0 n 61 .0746 101" W I ROWER ENGINEERING SERVICES,P.C. 505 SAYVILLE BLVD SAYVILLE,NY II182 3 LICI919E No.owse i►a-Tse-��n STRING OF U GRGUIT 3 )wmeoIC-V5 MODULES WI SUN unuTT " �� (1)EW14ASE IQTPLUS-V-2-US SERVICE MGRO-INVERTER9 511ATION SOLAR SYSTEMS POWERWALL 2 UNIT#1 C NOTE ll ONKOTON BLVD. r______________________________ T-' M RONKONKOMA N.Y.Ill'19 I NOTE 13TH MODLLE ON GRCUIT•2 RELOCATED TO I I 1 EXISTING MAIN SERVICE PANEL I I IS RECONFIGURED AS L_----------NEW CIRCAT*:2 ....... SUB PANEL ALL EXISTING NYSERDA CIRCUITS ARE UP FP POWELL INSTALLER 6 POWERWAUNITS I NUMBER PANELS RD KR CUSTOMER INFO CONP REDPLAQUEMOP200A NORKLUN RESIDENCE DROPf I PLAQUEEXGEsSw BRKR I I 1 II 12 I SERVICE DISGOMECT DURINGOUTAGE. —— I I or 366 GARDINERS LANE PLAQUE SECOND DISCONNECT SOUTHOLD, NY 11911 ENPWASE LOCATED NEM TO t SERVICE DISCONNECT METER PAN -rL -�- JOB NUMBER MICRO —� _;' (1)TESLA POWERWALL 2 UNITS I z of z pc 0� INVERTER '� ;' .i STORED ENERGY-14.0 KWH(EACH UNIT) ENPHABE ENVOY (ACTIVATE5 RAPID NON-BACKUP STORED (TYP.) USABLE ENERGY-13.5KWH(EACH UNIT) I SHUTDOWN) LUGS -rL -11- ae352 MODULE J-BOX RIM ARY DISCONNECT (TTP.) 2 I 200A LOCATED IN MAIN DATE 2PBBA 2P10A SERVICE PANEL BRKR CIRCUIT I . . . . . POWERWALL ENvor A 1^/ ^/ 1 PV MODULE I BLANK ft fL �/ 1 i.i e�1 ( I EXISTING AUTOMATIC NOTES 2PZM ENCLOSURE RELAY �� �`' I. WA STRING OF ( CIRCUIT 81 OGro hM�RATED (12)Ew4A E 101 MODULES WI I 2P7DA Mil 22K AIG (IZ)ENPHASE IQ�PLUS-l2-1-U5 I 1 MCRO-INVERTERS IN PARALLEL 12 13 CIRCUR i2 BACKUP LUGS r � EXISTING EXISTING ENPHASE TESLA MNN SERVICE EXISTING 10 COMBINER BACKUP GATEWAY 2 PANEL ROOF MOUNTED I SanDECK 2 3 4 5 I 1 GRCUIT 2 I �— J BUILDING CONDUIT AND CONDUCTOR 5CHEDULE GROUNDING STRING OF TAG DESCRIPTION OR CONDUCTOR NUMBER OF CONDUIT CONDUIT RUN ELECTRODE (13)W3-WQIC-V5 MODULES W1 (13)ENPHASE IQTPLUS-1I-2-US EGG ATTACHED :113 IN PARALLEL TO RAIL(TTP) CONDUCTOR TYPE GAUGE GCNDUCTOR5 TYPE SIZE LENGTH I ENFWASE Q-CABLE 12 6 N/A N/A 36" 2 TYPE NM 16 6 N/A N/A 15" 3 HWN-2 16 6 PVC 5CH. 86 1.25" 26" GC 6 I PVC 5CH, 86 1.25" 26" 4 HWN-2 4 3 PVC 5CH. 86 1.25" 2" GG I PVC 5CH. 86 1.25° 2" 5 HLJN-2 4 3 PVC 5CH. 86 1.25" 4" GG 6 1 PVC SCH. Be 1.25" 4" 6 HwN-2 8 3 PVG SCH. 86 1.ee" 16" GC 10 I PVG 5CH. 86 1.25" 16" ER 2/6 3 N/A 1.66' 31 GC e j N/A Lee" 3 DRAWN BY BEATTIE 5CALE N.T.S. TITLE ONE-LUNE DIAGRAM Eml -- - . . OF NFA i , 0.074659� � FISHER ENGINEERING 5ERVIGES,P.G. f; /+ 519 5AYVILLE BLVD - SAYVILLE,NY II161 1 a ` _ e � SUNation " 411 •._ •- li -- " Solar a�it 5h�uld be SUNATION 50LAR 5YSTEM5 ' j ® r Ill REMINGTON BLVD. '�'� �.� I—•--= ~�' ; .✓ RONKONKOMA N.Y.11115 V •• NYSERDA y- INSTALLER 4355 - - � .,�...____ �,— ■' NUMBER bCUSTOMER INFO .k:. — .- -- . ... <y;,-�'�x• � u:� _ � r- NORKLUN RESIDENCE - 300 GARDINER5 LANE SOUTHOLD, NY 11511 JOB NUMBER °� 88382 DATE ARRAY LOCATIONS EXISTING SOLAR SATELLITE IMAGE 5.12.2e2i }�T� VIA GROUND EQUIPMENT LOCATION 1V 1 N/A NOTES �.�.� Lilt 4 1. j DRAWN BY SEAN BEATTIE - SCALE PROPOSED ENERGY EXISTING UTILITY EXISTING MAIN TITLE PHOT05 STORAGE LOCATION METER ELECTRICAL PANEL G= 1 OF cNF��o TAG LABEL QTY. LOCATION NOTE EXAMPLES •02-91+ zo/.NEC eevn�s'O 12 DG CONDUITS I A EVERY SEPERATION 8Y ENCLOSURES/WALLS/ PA1 da• M«:- a1rlj a e- RTITIONS W /GENGS/FLOORS OR NO MORE THAN I6' O -„.,,•_ ' �O SONb.07465 C� MaS-325 20I4NEC69033;E'Y2i $ &WAMING DO NOT DISCONNECT I SPLICE/COMBINER I C@ ANY COMBINER BOX IF USED FISHER ENGINEERING SERVIGES,PG. S UNDER LOAD SeAY I FILLY B,20 TL`t SUN-3tion UNDER LOADsh0tild be ?50 9454 SUNATION SOLAR SYSTEMS _- III REMINGTON BLVD. SUHsnor RONKONKOMA N.Y.II1-M a CIRCUIT I I OF EACH 0 AG DISCONNECT NYSERDA OB • • • • 2 SOUR43 CE CIRCUITS COMPLETE VOLTAGE AND CURRENT VALUES ON INSTALLER 5 CIRCUIT 2 DISCONNECT LABEL NUMBER 240,0 CUSTOMER INFO AS NEEDED NORKLUN RESIDENCE 3ee GARDINERS LANE SOUTHOLD, NY 11911 JOB NUMBER a 00382 . . . 3146 CATE 240.0 8.12.2021 105102 20iaNEC 690'7JE) NOTES Service Disconnect i AG SERVICE I OF EACH 0 FUSED AG DISCONNECT N)A OEL8=110M-KMhRZ C DISCONNECTING COMPLETE VOLTAGE AND CURRENT VALUES ON pp ictic>t MEANS DISCONNECT LABEL I WaNNiN('. Primary Service Disconnect i9irMt4gllOtNg1E t)fE nw -3cated in Main Service Panel LOIID��IAN•EEMFROI�D M ilk OPEN PC6111BN -����.: \\ B • Tw I”k.quipped'am an I110111rconne';w Eh"t Power Prodiciion rp - s..o stler•A."1lellde EOmw— r u rc rur` rwu,w — N• 1 MAIN DISCONNECT I OF EACH A BUILDING MAIN DISCONNECT PANEL PANEL Service D15conneI;t D' This 6uddON is equipped wit en IngfWiY•ctid Elearrc Power • DRAIUN BY ProdwJ4 n ou�a SEAN BEATTIE OsWri•6.se11eNaie I UTILITY METER I A PSE�G UTILITY METER Wes WIN•_ tw: �/ ,....' N.T.S. w.w...were ne.•.�� TITLE:LABELNG SCHEMATIC L- 1 ENERGY STORAGE SYSTEMS ��. OF NFiv (NY)R321.1 GENERAL ENERGY STORAGE SYSTEMS INSTALLED IN �P\�om �•F,���O BUILDINGS OR STRUCTURES THAT ARE SUBJECT TO THE PROVISIONS OF TH15 CODE SHALL BE INSTALLED AND MAINTAINED IN ACCORDANCE WITH SECTIONS R321.2 THROUGH 8321.11. THE TEMPORARY USE OF AN OWNER'S OR OCCUPANT'S ELECTRIC POWERED VEHICLE AS AN ENERGY STORAGE SYSTEM SHALL BE IN ACCORDANCE WITH SECTION R321.12. �o 7 ENERGY STORAGE SYSTEM INSTALLATIONS EXCEEDING THE PERMITTED SIONP� AGGREGATE RATINGS IN SECTION R321.5 SHALL BE INSTALLED IN ACCORDANCE WITH SECTION 1206.2 THROUGH 1206.11.1.1 OF THE F15NER ENGINEERING SERVICES,P.G. FIRE CODE OF NEW YORK STATE. WATER MAIN ses sAYVILLE ewD GROUND 5AYVLLE,NY mal -E "51-166-4415 INY] 8321.3 INSTALLATION. ENERGY STORAGE SYSTEMS SHALL BE SUNBt� INSTALLED IN ACCORDANCE WITH THE MANUFACTURER'S INSTRUCTIONS AND THEIR LISTING. j lar as it should b! i 5UNATION 50LAR SYSTEMS I'll REMINGTON BLVD. [NY] R321.3.I SPACING. INDIVIDUAL UNITS SHALL BE SEPARATED RONKONKOMA N.Y.IIll9 FROM EACH OTHER BY AT LEAST 3 FEET (514 MM) OF SPACING UNLESS SMALLER SEPARATION DISTANCES ARE INSTALLE DOCUMENTED TO NTAI I E ER BE ADEQUATE BASED ON LARGE-SCALE FIRE TESTING COMPLYING NUMBER WITH SECTION 1206.6 OF THE FIRE CODE OF NEW YORK STATE. [NY] 8321.4 LOCATION. ENERGY STORAGE SYSTEMS SHALL ONLY BE CUSTOMER INFO NORKLUN RESIDENCE INSTALLED IN THE FOLLOWING LOCATIONS I. DETACHED GARAGES AND DETACHED ACCESSORY STRUCTURES. 300 GARDINERS LANE 2. ATTACHED GARAGES SEPARATED FROM THE DWELLING UNIT LIVING SOUTHOLD, NY 11911 SPACE AND SLEEPING UNITS IN ACCORDANCE WITH SECTION I 8302 OF THI5 CODE. BASEMENT I JOB NUMBER 3. OUTDOORS ON EXTERIOR WALLS LOCATED A MINIMUM 3 FEET (UNFINISHED) 00382 (914 MM). FROM DOORS AND WINDOWS. 4. UTILITY CLOSETS AND STORAGE OR UTILITY SPACES WITHIN 1 DATE DWELLING UNITS AND SLEEPING UNITS -M--` SIDE O F HOUSE 26-3�2 8.12.2021 H—ER NOTES INY) R321.5 ENERGY RATttJGS. INDIVIDUAL ENERGY STORAGE SYSTEM I. N/A UNITS SHALL HAVE A MAXIMUM RATING OF 20 KWH. THE AGGREGATE MULTISTATION SMOKE DETECTION TO BE INSTALLED WITHIN PROXIMITY TO RATING SHALL NOT ExGEED POWERWALL LOCATION 1. 40 KWH WITHIN UTILITY CLOSETS AND STORAGE OR UTILITY O SPACES. 2. 80 KWH IN ATTACHED OR DETACHED GARAGES AND DETACHED EXISTING ENPHASE -. ACCESSORY STRUCTURES. EQUIPMENT I 3. 80 KWH ON EXTERIOR WALLS. 4. 80 KWH OUTDOORS ON THE GROUND. SOLAR - DISCONNECT DUILDING PLANNING MAIN ELECTRIC --- 80 2020 RESIDENTIAL CODE OF NEW YORK STATE PANEL [NY] R321.6 ELECTRICAL INSTALLATION, ENERGY STORAGE SYSTEMS i 8. SHALL BE INSTALLED IN ACCORDANCE WITH NFPA l0. INVERTERS SHALL UTILITY METER BE L15TED AND LABELED IN ACCORDANCE WITH UL 1141 OR PROVIDED AS PART OF THE UL 9540 LISTING. SYSTEMS CONNECTED TO THE UTILITY 1 5' GRID SHALL USE INVERTERS LISTED FOR UTILITY INTERACTION. ll PROPOSED TESLA GATEWAY [NY] R321.1 FIRE DETECTION. ROOMS AND AREAS IN WHICH ENERGY STORAGE SYSTEMS ARE INSTALLED SHALL BE PROTECTED BY SMOKE ALARMS IN ACCORDANCE WITH SECTION R314. A HEAT DETECTOR OR HEAT ALARM LISTED AND INTERCONNECTED TO THE SMOKE ALARMS SHALL BE INSTALLED IN LOCATIONS WHERE SMOKE ALARMS --- a PROPOSED TESLA CANNOT BE INSTALLED BASED ON THEIR LISTING. POWERWALL [NY] R321.6 FIRE-RESISTANCE RATING. ROOMS AND AREAS CONTAINING 3 ENERGY STORAGE SYSTEMS SHALL BE PROTECTED ON THE SYSTEM DRAWN BY SIDE BY NO LE55 THAN 5/8-INCH TYPE X GYPSUM BOARD OR 1-6 SEAN BEATTIE EQUIVALENT, INSTALLED ON THE WALLS AND CEILING OF THE ROOM OR 9_31 AREA. ATTACHED GARAGES CONTAINING ENERGY STORAGE SYSTEMS /2 scALIE SHALL BE PROTECTED ON THE SYSTEM SIDE BY FIRE-RESISTANT CONSTRUCTION 13-4�` so N.T.5. .S, IN ACCORDANCE WITH SECTION R302. TITLE E55 LOCATIONS) [NY] R321.5 PROTECTION FROM IMPACT. ENERGY STORAGE SYSTEMS INSTALLED IN A LOCATION SUBJECT TO VEHICLE DAMAGE SHALL BE PROTECTED BY APPROVED BARRIERS. Tml • �� OF NFIy BACK OF HOUSE PARTIAL ELEVATION 07465 I FISwER EERING SERVICES,f-C. L r,e5 SAYVILLE BLVD SA SAYMLLEVILLE,NT 11162 LICENSE NO.GIKS]I i>I-lii-�11] SUNation 1,olar as it should be SUNATION SOLAR SYSTEMS Ill REMINGTON BLVD. RONKONKOMA N.Y.IIT-9 ybERDA NTAIE INS5TALLER NUMBER CUSTOMER INFO NORKLUN RESIDENCE 308 GARDINERS LANE SOUTHOLD, NY 11911 JOB NUMBER 88382 DATE 8.12.2821 NOTES I. N/A Yr a Q L H PROPOSEDTESLA GATEWAY AND EXISTING METER (SIDE OF HOUSE) PROPOSED TESLA POWERWALL /J DRAWN BY -- - _ - -- SEAN 15EATTIE NOTE: RED HATCHED AREA SCALE: INDICATES 3'SETBACK AROUND DOORS AND WINDOWS PER R327.4 N.T.S. TITLE:ELEVATION T=2 T ® 5LFi { T , i Y , s a i I Powerwall 2 AC Installation Manual with Backup Gateway 2 For the latest Powerwall installation documents in all supported languages, visit: www.tesla.com/support/powerwall To secure the full 10-year product warranty, Powerwall must be registered by completing the commissioning process and sending system information to Tesla. Product Specifications All specifications and descriptions contained in this document are verified to be accurate at the time of printing. However, because continuous improvement is a goal at Tesla, we reserve the right to make product modifications at any time. The images provided in this document are for demonstration purposes only. Depending on product version and market region, details may appear slightly different. Errors or Omissions To communicate any inaccuracies or omissions in this manual, send an email to: energy-pubs@tesla.com. ©2021 TESLA, INC. All rights reserved. All information in this document is subject to copyright and other intellectual property rights of Tesla, Inc. and its licensors. This material may not be modified, reproduced or copied, in whole or in part, without the prior written permission of Tesla, Inc. and its licensors. Additional information is available upon request. The following are trademarks or registered trademarks of Tesla, Inc. in the United States and other countries: ' T = S L n Tesla Tesla Motors Powerwall -- - -- - - -- - - - - - - All other trademarks contained in this document are the property of their respective owners and their use herein does not imply sponsorship or endorsement of their products or services. The unauthorized use of 'any trademark displayed in this document or on the product is strictly prohibited. 1 AElectronic Device: Do Not Throw Away Proper disposal of batteries is required. Refer to local codes for disposal requirements. For Private Households: Information on Disposal for Users of WEEE l This symbol on the product(s) and/or accompanying documents means that used electrical and electronic equipment (WEEE) should not be mixed with general household waste. For proper treatment, recovery and recycling, please take this product(s) to designated collection points where it will be accepted free of charge. Alternatively, in some countries, you may be able to return your products to your local retailer upon purchase of an equivalent new product. i Disposing of this product correctly will help save valuable resources and prevent any potential negative effects on human health and the environment, which could otherwise arise from inappropriate waste handling. Please contact your local authority for further details of your nearest designated collection point. Penalties may be applicable for incorrect disposal of this waste, in accordance with you national legislation. ' For Professional Users in the European Union F If you wish to discard electrical and electronic equipment (EEE), please contact your dealer or supplier for further information. a t For Disposal in Countries Outside of the European Union f This symbol is only valid in the European Union (EU). If you wish to discard this product please contact }your local authorities or dealer and ask for the correct method of disposal. General Warnings and Information.................3 Remove Neutral-Ground Bonding Strap from Backup Gateway if Not Installed as Service Specifications..........................................................6 Equipment..............................................................................29 Powerwall Specifications.................................................... 6 Backup Gateway 2 Specifications....................................8 STEP 4: Make AC Power Connections........ 30 Install Main Breaker in Backup Gateway.................... 30 Registering Powerwall......................................... 9 Make AC Power Connections to Supply and Load Site Requirements and Pre-Installation Panels.......................................................................................30 Guidance..................................................................10 Install Optional Internal Panelboard in the BackupGateway...................................................................................32 Powerwall and Backup Gateway 2 Installation Requirements.........................................................................10 STEP 5: Make Communications Connections Powerwall Physical Requirements...................................1134 .................................................................................... Powerwall Identification.....................................................12 Connect Powerwall to the Backup Gateway.............34 Powerwall Optimum Temperature Range...................12 Panel Limit Feature............................................................37 Preparing for Installation...................................13 Install Optional Remote Disable Switch......................39 In the Powerwall Box...........................................................13 STEP 6: Install Energy Metering for the In the Powerwall Accessory Bag...................................13 System.....................................................................43 In the Backup Gateway 2 Box..........................................15 About Energy Metering.....................................................43 In the Backup Gateway 2 Accessory Bag..................15 Site and Solar Metering for Backup Gateway 2.......43 Required Tools.......................................................................16 Install Tesla 100 A CTs......................................................44 RequiredSupplies.................................................................16 Service Parts, Orderable Parts, and Accessory Kits.... STEP 7: Complete the Installation................ 45 .....................................................................................................17 Plan Internet Connection for the Backup Gateway 2 Powerwall 2 Accessory Kits and Orderable Parts....... ..••••..................................................•.............•••.........................••45 ....................................................................................................17 Close the Wiring Compartments and Turn the Backup Gateway 2 Service Parts, Orderable Parts, System On..............................................................................45 and Accessories...................................................................18 STEP 8: Commission the System...................47 STEP 1: Plan the Installation Site................... 20 Commission the System....................................................47 Choose a Location..............................................................20 Finish and Demonstrate the Installation.....................49 Choose Side or Rear Cable Entry for Powerwall.....20 Troubleshooting...................................................................50 Choose Backup Gateway Cable Entry.........................20 Technical Support...............................................................50 Plan the Electrical Service Connection to Backup Maintenance..........................................................................50 Gateway..................................................................................20 Plan Wiring Method............................................................20 Appendix A: Powerwall Mounting Details...... Plan Distance Between Components............................21 .....................................................................................51 Powerwall Space Requirements......................................51 STEP 2: Mount Powerwall and the Backup Mounting Bracket Anchoring Details...........................52 Gateway.................................................................. 22 Anchor the Powerwall Mounting Bracket...................22 Appendix B: Wiring Reference.......................56 Mount Powerwall on the Bracket...................................23 Powerwall Wiring.................................................................56 Mount the Backup Gateway.............................................27 Backup Gateway 2 Wiring................................................57 Backup Gateway 2 Communication Wiring...............59 STEP 3: Configure the Backup Gateway for Eaton Breakers.....................................................................60 Wiring...................................................................... 29 Appendix C: System Wiring Diagrams.........61 Overview..................................................................................61 Whole-Home Backup..........................................................61 Partial-Home Backup.........................................................64 Step 6: Close the Wiring Compartments and Replace the Covers........................................................107 Appendix D: Configure Energy Metering........ Step 7: Turn On and Commission the System.....108 ....................................................................................68 Appendix E: Installing a Neurio Energy Appendix I: Revision Log................................109 Meter........................................................................69 Neurio Energy Meter Overview......................................69 Wireless Communication to the Backup Gateway....... .....................................................................................................71 Wired Communication to the Backup Gateway.......71 Meter Voltage Taps.............................................................73 Voltage Tap and Current Transformer Connections.... ....................................................................................................73 Meter Placement and CT Wire Lengths......................74 Current Transformer Placement.....................................74 Current Transformer Orientation...................................75 Current Transformer Capacity........................................75 Metering Split-phase Solar with a Single CT.............77 Installing the Meter..............................................................77 Neurio Meter Installation Troubleshooting.................81 Appendix F: Feature Notes............................. 82 Configuring Site Limits......................................................82 Configuring Conductor Export Limits.........................82 LoadShedding......................................................................83 Appendix G: Installation Troubleshooting...... ....................................................................................85 Accessing the Powerwall User Interface.....................85 Updating Firmware.............................................................85 Configuring Energy Meters..............................................85 Reset the Backup Gateway..............................................86 Power Cycle the System...................................................86 Appendix H: Multi-Powerwall Installations..... ....................................................................................87 Electrical Equipment Sizing and Overcurrent Protection...............................................................................87 Multi-Powerwall Installations with the Stack Kit.....94 In the Powerwall Stack Kit..............................................94 RequiredTools....................................................................94 Site Requirements..............................................................95 Installation Instructions................................................... 96 Step 1: Prepare for Installation.....................................96 Step 2: Choose a Wiring Option.................................97 Step 3: Prepare for Concealed Wiring......................98 Step 4: Join the Powerwall Units..............................100 Step 5: Wire the Powerwall Units.............................105 T GENERAL WARNINGS AND INFORMATION ATTENTION: Read this entire document before installing or using Powerwall. Failure to do so or to follow any of the instructions or warnings in this document can result in electrical shock, serious injury, or death, or can damage Powerwall, potentially rendering it inoperable. Important Safety Instructions This manual contains important instructions for the Tesla Powerwall 2 AC and Backup Gateway that must be followed during installation and maintenance of the system. Symbols Used ' CAUTION: indicates a hazardous situation RISK OF ELECTRIC SHOCK: indicates • which, if not avoided, could result in minor i components that present risk of injury or damage to the equipment. electrical shock. AWARNING: indicates a hazardous situation Ail/-,; CAUTION, RISK OF ELECTRIC SHOCK, which, if not avoided, could result in injury or sminute., ENERGY STORAGE TIMED death. DISCHARGE. Discharge time is 5 minutes from de-energization. NOTE: indicates an important step or tip that BIDIRECTIONAL TERMINAL: Indicates leads to best results, but is not safety or location of combined input/output damage related. connector on the equipment. REFER TO OPERATING INSTRUCTIONS: PROTECTIVE CONDUCTOR indicates that user should refer to operating — TERMINAL: Indicates location of or installation instructions before proceeding. grounding connection on the equipment. General Information AWARNING: Read this entire document before installing or using Powerwall. Failure to do so or to follow any of the instructions or warnings in this document can result in electrical shock, serious injury, or death, or may damage Powerwall, potentially rendering it inoperable. AWARNING: A battery can present a risk of electrical shock, fire, or explosion from vented gases. Observe proper precautions. AWARNING: Powerwall installation must be carried out only by a competent electrician who is certified by Tesla and who has been trained in dealing with low voltage electricity. AWARNING: Powerwall is heavy. Use of lift equipment is recommended. —J Powerwall 2 AC Installation Manual 3 GENERAL WARNINGS AND INFORMATION AWARNING: Use Powerwall only as directed. _J AWARNING: Do not use Powerwall if it is defective, appears cracked, broken, or otherwise damaged, or fails to operate. AWARNING: Before beginning the wiring portion of the installation, ensure that Powerwall is switched off, and lock out any associated circuit breakers and disconnect switches (if applicable for the installation). AWARNING: Do not attempt to open, disassemble, repair, tamper with, or modify Powerwall. Powerwall and its components are not user serviceable. Batteries in Powerwall are not replaceable. Contact Tesla Support for guidance on repairs. AWARNING: To protect Powerwall and its components from damage when transporting, handle with care. Do not impact, pull, drag, or step on Powerwall. Do not subject Powerwall to any strong force. To help prevent damage, leave Powerwall in its shipping packaging until it is ready to be installed. AWARNING: Do not insert foreign objects into any part of Powerwall. AWARNING: Do not expose Powerwall or its components to direct flame. AWARNING: Do not install Powerwall near heating equipment. _J AWARNING: Do not immerse Powerwall or its components in water or other fluids. _J AWARNING: Install Powerwall and Backup Gateway in a location that prevents damage from flooding. ® WARNING: Operating or storing Powerwall in temperatures outside its specified range might cause damage to Powerwall. AWARNING: Do not expose Powerwall to ambient temperatures above 60°C (140°F) or below -30°C (-22°F). CAUTION: Do not use solvents to clean Powerwall, or expose Powerwall to flammable or harsh • chemicals or vapors. _J CAUTION: Do not use fluids, parts, or accessories other than those specified in this manual, including r use of non-genuine Tesla parts or accessories, or parts or accessories not purchased directly from Tesla or a Tesla-certified party. J\ CAUTION: Do not place Powerwall in a storage condition for more than one (1) month, or permit the electrical feed on the Powerwall to be severed for more than one (1) month, without placing Powerwall into a storage condition in accordance with Tesla's storage specifications. CAUTION: Do not paint any part of Powerwall, including any internal or external components suchas ' 1 the exterior shell or casing. CAUTION: Do not connect Powerwall directly to photovoltaic (PV) solar wiring. Powerwall 2 AC Installation Manual 4 GENERAL WARNINGS AND INFORMATION CAUTION: When installing Powerwall in a garage or near vehicles, keep it out of the driving path. If possible, install Powerwall on a side wall and/or above the height of vehicle bumpers. CAUTION: Avoid installing Powerwall and Backup Gateway in direct sunlight. CAUTION: Ensure that no water sources are above or near Powerwall or Backup Gateway, including downspouts, sprinklers, or faucets. CAUTION: Ensure that snow does not accumulate around Powerwall or Backup Gateway. fj\ CAUTION: Avoid installing the Powerwall and Backup Gateway where it will be exposed to direct r sunlight or ambient temperatures greater than 35°C. Powerwall 2 AC Installation Manual 5 SPECIFICATIONS Powerwall Specifications Performance Specifications AC Voltage (Nominal) 120/240 V Feed-In Type Split Phase Grid Frequency 60 Hz Total Energyl 14 kWh Usable Energyl 13.5 kWh Real Power, max continuous 5 kW (charge and discharge) Real Power, peak (10s, off-grid/backup) 7 kW (charge and discharge) Apparent Power, max continuous 5.8 kVA (charge and discharge) Apparent Power, peak (10s, off-grid/backup) 7.2 kVA (charge and discharge) Maximum Supply Fault Current 10 kA Maximum Output Fault Current 32 A Overcurrent Protection Device 30 A Imbalance for Split-Phase Loads 100% Power Factor Output Range +/- 1.0 adjustable Power Factor Range (full-rated power) +/- 0.8S Internal Battery DC Voltage 50 V Round Trip Efficiencyl,2 90% lValues provided for 25°C (770F), 3.3 kW charge/discharge power. 2AC to battery to AC, at beginning of life. Mechanical Specifications Dimensions3 1150 mm x 753 mm x 147 mm (45.3 in x 29.6 in x 5.75 in) Weight3 114 kg (251.3 lbs) Mounting Floor or wall mount 3Dimensions and weight differ slightly if manufactured before March 2019. Contact Tesla for additional information. Powerwall 2 AC Installation Manual 6 SPECIFICATIONS Environmental Specifications Operating Temperature -20°C to 50°C (-4°F to 1220F)4 Recommended Temperature 0°C to 30°C (32°F to 860F)4 Operating Humidity (RH) Up to 100%, condensing Storage Conditions -20°C to 30°C (-4°F to 86°F) Up to 95% RH, non-condensing State of Energy (SoE): 25% initial Maximum Elevation 3000 m (9843 ft) Environment Indoor and outdoor rated Enclosure Type NEMA 3R Ingress Rating IP67 (Battery & Power Electronics) IP56 (Wiring Compartment) Wet Location Rating Yes Noise Level @ 1m < 40 dBA at 30°C (86°F) 4Performance may be de-rated at operating temperatures below 10°C (50°F.) Powerwall 2 AC Installation Manual 7 SPECIFICATIONS Backup Gateway 2 Specifications Performance Specifications AC Voltage (Nominal) 120/240 V Feed-In Type Split Phase Grid Frequency 60 Hz Current Rating 200 A Maximum Input Short Circuit Current 10 kAl Overcurrent Protection Device 100-200A; Service Entrance Rated Overvoltage Category Category IV AC Meter Revenue accurate (+/- 0.2 %) When protected by Class J fuses, Backup Gateway 2 is suitable for use in circuits capable of delivering not more than 22 kA symmetrical amperes. Mechanical Specifications Dimensions 660 mm x 411 mm x 149 mm (26 in x 16 in x 6 in) Weight 20.4 kg (4S Ib) Mounting Wall mount, Semi-flush mount Environmental Specifications Operating Temperature -20°C to SO°C (-4°F to 122°F) Operating Humidity (RH) Up to 100%, condensing Maximum Elevation 3000 m (9843 ft) Environment Indoor and outdoor rated Enclosure Type NEMA 3R Powerwall 2 AC Installation Manual 8 T REGISTERING POWERWALL Tesla Powerwall comes with a warranty whose term depends on the connection of Powerwall to the Internet. To secure the full 10-year warranty for Powerwall, it must be reliably connected to the Internet to allow remote firmware upgrades from Tesla. If an Internet connection is not established or is interrupted for an extended period, and Tesla is unable to contact the owner, the warranty may be limited to 4 years. To ensure that the owner can receive the full 10-year warranty, be sure to complete the commissioning process so that registration information is sent to Tesla. For more information, refer to the Powerwall Warranty for your region at www.tesla.com. Powerwall 2 AC Installation Manual 9 T SITE REQUIREMENTS AND PRE-INSTALLATION GUIDANCE Powerwall and Backup Gateway 2 Installation Requirements Powerwall comes with a separate Backup Gateway to enable integration with the electrical grid and generation like solar systems (refer to Compatibility Matrix for information on what can be connected with Powerwall). The Backup Gateway communicates with the system by means of wireless and wired connections. Wiring and conduit (where required) must be provided by the installer and installed to comply with local codes. AC isolation and interconnection requirements between the Powerwall system and the electrical panel are subject to local codes. Ensure that the installation meets local isolation and interconnection requirements. All U.S. and Canada electrical installations must be done in accordance with local codes and the National Electric Code (NEC) ANSI/NFPA 70 or the Canadian Electrical Code CSA C22.1. AWARNING: All Powerwalls in the system must be installed on the 'Backup' ('Home') side of the Backup Gateway's relay. AWARNING: When Powerwall is installed in a dwelling unit, fire detection and protection equipment should be installed in accordance with local building and fire codes. AWARNING: Do not connect the Backup Gateway in any way that bypasses or short-circuits its relay. AWARNING: Do not connect the Backup Gateway to the source side only or to the load side only. The Backup Gateway must have both source and load connections, and must be wired in compliance with local codes. J\ CAUTION: The Backup Gateway 2 is rated for 10 kA maximum supply fault current. Where local regulation requires a 10 kA rating, all breakers employed in circuit with the Backup Gateway 2 should also be rated to 10 kA. CAUTION: Before installing, disconnecting, and/or adjusting current transformers for metering, • ensure the circuits being measured are not energized and the system is completely powered down. Failure to de-energize the system may compromise operator and equipment safety. CAUTION: The Manual Override switch inside the product may not be used to simulate a grid outage ' 1 or take home off-grid. A main isolation switch should be installed upstream of the Backup Gateway for testing the system and for service purposes. G' NOTE: All installations must conform to the laws, regulations, codes, and standards applicable in the jurisdiction of installation. The Backup Gateway must be wall-mounted and can be configured for cable entry at the top, bottom, rear, or sides of the enclosure. It requires adequate clearance for installation and cabling or conduit. Wiring and conduit (where required) must be provided by the installer and the installation must comply with local codes and UL514B requirements. Powerwall 2 AC Installation Manual 10 SITE REQUIREMENTS AND PRE-INSTALLATION GUIDANCE Figure 1. Powerwall 2 AC and Backup Gateway 2 Dimensions 753 mm 147 mm (29.6 in) (5.8 in) r—� T = 5 L n 411 mm 149 mm 1150 mm (16 in) (6 in) (45.3 in) T�s�n i 660 mm (26 in) Powerwall Physical Requirements Powerwall can be mounted on a floor or wall, and includes a mounting bracket to support either configuration. Mounting Powerwall must follow the guidance outlined in this document. Mounting requirements based on wall type are provided in Appendix A:Powerwall Mounting Details on page 51. Powerwall requires adequate clearance for installation, cabling, and airflow. Do not install anything above Powerwall that limits access to the unit or that might fall and damage the unit. Do not mount Powerwall horizontally or upside down. G' NOTE: Powerwall has a pump and fan that produce a gentle hum during operation, comparable to a typical refrigerator. The noise level depends on the ambient temperature and the power level of operation. Consider these noise levels when choosing where to install Powerwall. Powerwall 2 AC Installation Manual ii SITE REQUIREMENTS AND PRE-INSTALLATION GUIDANCE Powerwall Identification Newer Powerwalls have slightly different dimensions for mounting-bracket height. Powerwalls may be easily identified by part number and by comparing the back of the Powerwall (see figure below). Figure 2. Powerwal) 2 Identification by Mounting Bracket Height 1092170-XX-J and higher 1092170-XX-H and lower 2012170-XX-C and higher 2012170-XX-B and lower 3012170-XX-Y(all) 755 mm(29.7 in) 753 mm(29.6 in) I 395 mm °o o 0 0 0 0 0 0 0 ° ° ° (15.6 in) ° o ° o 0 • o U ° ° t_v 0 C o 1150 mmo ® °I ° ❑ 0 (45.3 in) ❑ ° I® ° 711 mm 0 0 (28 in) ° 292 mm o (11.5 in) ° 248 mm ° o (9.76 in) o 0 0 0 0 0 0 0 0 o o o ° 20 mm 63 mm 623 mm (0.79 in) (2.48 in) (24.54 in) Powerwall Optimum Temperature Range Powerwall is rated to operate in temperatures from -4°F to 122°F (-20°C to 500C). However, for best performance Tesla recommends installing Powerwall in locations with ambient temperature between 32°F to 86°F (0°C to 30°C) year round. When outside this optimum temperature range, charge/discharge power may be reduced and Powerwall will utilize its thermal control system more frequently to maintain battery cell temperature which will reduce the energy efficiency of the system. Systems operating off-grid for long periods (>4 hours) in cold weather may need to curtail PV, and reduce energy used for pre-conditioning. • For cold climates Tesla strongly recommends installing Powerwall indoors when possible (particularly when long outages are expected). • For hot climates Tesla recommends keeping Powerwall out of direct sunlight. Installation in full sun raises the temperature inside the enclosure above ambient temperature. This temperature rise is not a safety risk, but may impact battery performance. Additionally, if stored in a cold environment (e.g. below 0°C) before installation, it may take several hours for Powerwall to raise its internal temperature using pre-conditioning. Tesla recommends storing Powerwall in a warm location prior to installation to help efficiently commission and test the system. Powerwall 2 AC Installation Manual 12 PREPARING FOR INSTALLATION In the Powerwall Box In the Powerwall Accessory Bag Powerwall Accessory Bag: Tesla P/N 1104517-00-x 0 04r, o 0 0 0 0 0 0 1. Wiring compartment cover with (4) screws 2. (1) AC power harness 3. (3) Wago 2-position lever nuts 4. (1) 4-pin terminal block connector 5. (1) 4-pin terminal block connector with 120-Ohm terminating resistor 6. (1) 32-mm reducing washer 7. (2) 25-mm reducing washers Powerwall 2 AC Installation Manual 13 PREPARING FOR INSTALLATION 8. (1) 35-mm rubber grommet 9. (1) drillable threaded cable gland Powerwall 2 AC Installation Manual 14 PREPARING FOR INSTALLATION In the Backup Gateway 2 Box In the Backup Gateway 2 Accessory Bag H O 1. (1) Main circuit breaker adhesive label 2. (1) Tesla 100 A CT 3. (4) Sealing washers 4. (1) Tesla CT extension cable harness (10 ft/3 m) 5. (1) Owner's Guide Powerwall 2 AC Installation Manual 15 PREPARING FOR INSTALLATION Required Tools General Installation Tools • Personal protective equipment (safety glasses, gloves, protective footwear) • Drill with applicable drill bits • Torque screwdriver with 1/4-inch bit holder and T20 Torx bit • Small (2 mm) flathead screwdriver (for wiring connector spring terminals) • Socket wrench with 8mm hex socket • Wire strippers/cutters for 24 AWG to 250 kcmil (0.2 mm2 to 120 mm2) wires • Installation tools (level, stud sensor, tape measure, pencil, painter's tape, flashlight) • Multimeter and Loop Impedance Tester • Digital camera or smartphone for documenting the installation Powerwall Installation Tools • Large (5 mm) flathead driver bit (for Powerwall Earth terminal) • Lift equipment capable of lifting and supporting 125 kg up to 1.5 m • Ratcheting strap to secure Powerwall to lift equipment AWARNING: Powerwall is heavy. Wear appropriate personal protective equipment (such as gloves and protective footwear) when handling the unit. Only a sufficient number of trained movers should lift Powerwall. Use of lift equipment is recommended. Backup Gateway Installation Tools • Torque wrench with 1/4-, 3/8-, and 5/16-inch Allen bit (for Backup Gateway power connections) • Socket wrench with 8 mm (5/16-inch) hex socket Required Supplies • Powerwall mounting bracket hardware (see Appendix A:Powerwall Mounting Details on page 51) • Backup Gateway mounting hardware • Conduit or raceway (depending on local electrical requirements) • Conduit adapters (necessary for cable entry into Powerwall wiring compartment and Backup Gateway) • Minimum 300 V rated 4-conductor (twisted pair optional) or double-insulated (with one twisted pair) shielded copper (Cu) cable (for communication connection between Powerwall and the Backup Gateway) • Minimum 600 V rated copper (Cu) cable (for power connections to Powerwall and the Backup Gateway) Powerwall 2 AC Installation Manual 16 PREPARING FOR INSTALLATION Service Parts, Orderable Parts, and Accessory Kits Powerwall 2 Accessory Kits and Orderable Parts Powerwall Accessory Kits Part Number Name Description 1107999-00-x Powerwall 2 Mounting Additional Powerwall Wall Mounting Bracket (1 bracket is Bracket included with every Powerwall) 1104517-00-x Powerwall 2 Accessory Bag Additional Powerwall 2 accessory bag for North American (North America) market (1 accessory bag is included with every Powerwall) 1112154-00-x Powerwall 2 Stack Kit Powerwall 2 Stack Kit for stacked Powerwall installs Neurio W7 Meter and Components G, NOTE: Neurio W1 accessories are not compatible with the Neurio W2 meter, and vice versa. Part Number Name Description 1112484-02-x Neurio W1 Meter Kit with 200 A Neurio W1 Meter Kit with (2) Neurio 200 A CTs CTs 1112477-00-x Neurio Wl Additional 200 A CTs Additional Neurio Wl 200 A CTs (2 count) 1447689-00-x Neurio W1 800 A CTs Neurio W1 800 A CTs (2 count) 1125547-03-x Neurio W1 CT Extension Wires Neurio W1 CT Extension Wires 1129625-00-x Neurio Wl CT Y Splitter Neurio W1 CT Y-Splitter to allow for paralleling CT connections 1133339-00-x Neurio W1 RS-485 meter Neurio RS-485 cables that connect from meter to communication harness Gateway to ensure a hardwired connection EP-PW-BUNDLE-1 Neurio W2 Accessory Bundle 1 (2) Neurio W1 200A CTs, (2) Neurio W1 CT extension wires, (1) Neurio W1 Y-Splitter EP-PW-BUNDLE-2 Neurio W2 Accessory Bundle 2 (1) Neurio W1 Meter Kit with (2) W1 200A CTs, (2) additional Neurio Wl 200A CTs, (4) Neurio Wl CT extension wires, (2) Neurio Wl Y-Splitters, (1) Neurio RS-485 cable Neurio W2 Meter and Components G` NOTE: Neurio W2 accessories are not compatible with the Neurio Wl meter, and vice versa. Part Number Name Description 1112484-04-x Neurio W2 Meter Kit with Neurio W2 Meter Kit with (2) Neurio 200 A CTs 200 A CTs 1622277-00-x Neurio W2 Additional 200 A Additional Neurio W2 200 A CTs (2 count) CTs 1622289-00-x Neurio W2 CT Extension Neurio W2 CT Extension Wires Wires Powerwall 2 AC Installation Manual 17 PREPARING FOR INSTALLATION Part Number Name Description 1622286-00-x Neurio W2 CT Y Splitter Neurio W2 CT Y-Splitter to allow for paralleling CT connections EP-PW-BUNDLE-5 Neurio W2 Accessory Bundle (1) Neurio W2 Meter Kit with (2) W2 200A CTs, (2) 5 additional Neurio W2 200A CTs, (4) Neurio W2 CT extension wires, (2) Neurio W2 Y-Splitters EP-PW-BUNDLE-6 Neurio W2 Accessory Bundle (2) Neurio W2 200A CTs, (2) Neurio W2 CT extension 6 wires, (1) Neurio W2 Y-Splitter EP-PW-BUNDLE-8 Neurio W2 Accessory Bundle (1) Neurio W1 Meter Kit with (2) W1 200A CTs, (2) W1 8 800A CTs Backup Gateway 2 Service Parts, Orderable Parts, and Accessories Part Number Name Description 1467316-00-x Tesla 100 A CT Additional Tesla 100 A CT (1 count) 1467274-00-x Tesla 100 A CT Extension Tesla 100 A CT Extension (10 ft/ 3 m) 1529623-00-x Internal Panelboard Kit Optional internal panelboard kit with wire jumpers and breaker hold-down bar 1549184-00-x 2" Conduit Hub Kit 2" conduit hub and bolts 1549184-01-x 1.25" Conduit Hub Kit 1.25" conduit hub and bolts 1534278-50-x Gateway 2 Top Hatch Service replacement top hatch for the Gateway 2 1486318-01-x Gateway 2 Glass Door Service replacement glass door for the Gateway 2 Figure 3. Internal Panelboard Kit P Powerwall 2 AC Installation Manual ]S PREPARING FOR INSTALLATION Figure 4. Conduit Hub Kit r Powerwall 2 AC Installation Manual 19 T STEP 1: PLAN THE INSTALLATION SITE Choose a Location Choose a wall capable of supporting the full weight of Powerwall, with one of the following characteristics: • Wood studs at regular intervals • Plywood sheeting of sufficient thickness • Solid concrete or masonry • Metal studs of sufficient gauge If floor-mounting Powerwall, choose a level surface adjacent to a wall space that meets the above requirements. Make sure the area is isolated from hazards that could damage Powerwall, such as vehicle traffic or flooding. Consider the spacing requirements for Powerwall (see Appendix A:Powerwall Mounting Details on page 51). Choose Side or Rear Cable Entry for Powerwall Determine whether cables will be routed into Powerwall from the side or the back of the unit. • For side cable entry, a conduit fitting or cable gland must be used to seal the entry into the wiring compartment. • For back cable entry, a rubber grommet or cable gland is used to seal the entry into the wiring compartment. U101' NOTE: If Powerwall is mounted on a wall with studs spaced 24 inches apart, cable entry from the back of Powerwall may be blocked. Choose Backup Gateway Cable Entry Determine whether cables will be routed into the Backup Gateway from the top, bottom, sides, or rear of the enclosure. G, NOTE: For cable entry at the top of the Backup Gateway enclosure, a Tesla Top Hub must be used in order to maintain enclosure ingress protection. Plan the Electrical Service Connection to Backup Gateway The Backup Gateway is service entrance rated. When installed at the service entrance, appropriate overcurrent protection must be installed in the Backup Gateway. The Backup Gateway can accommodate a main circuit breaker between 100 and 200 A. Breaker sizing and installation must comply with the National Electric Code. Plan Wiring Method Calculate the amount and size of appropriate cable needed for the installation, based on fill limits and local code requirements. An adapter may be required between the entry into the Powerwall wiring compartment and the conduit. Powerwall 2 AC Installation Manual 20 STEP 1: PLAN THE INSTALLATION SITE Plan Distance Between Components Follow the table below for maximum distances between system components. Wire gauge must meet local codes and in some circumstances wire gauge requirements change based on distance. Refer to Appendix B: Wiring Reference on page 56 for wire gauge requirements. Distance to Measure Maximum Cable Length Backup Gateway to Powerwall unit(s)* 150 ft (45 m) for 16 AWG (1.5 mm2) wire 82 ft (25 m) for 18 AWG (0.8 mm2) wire Neurio Energy Meter to Backup Gateway (RS485 wired 164 ft (50 m) connection) Backup Gateway to Internet router (wired Ethernet connection) 328 ft (100 m) *Total length of communications cable, including daisy-chained connections, through last Powerwall in chain �\ CAUTION: Failure to follow minimum cable size and length requirements may result in intermittent or unreliable operation of the Powerwall system. In systems that do not meet these minimum requirements, performance issues may arise even after successful commissioning. Maximum Tesla CT Extension Tesla 100 A CTs Maximum Extension Length Using Tesla 100 A CT Extension (10 ft/3 m) (Tesla P/N 1467274-00-x) Up to 12.5 ft (3.8 m) Using 20 AWG (0.5 mm2) or larger twisted pair conductors Up to 330 ft (100 m) Maximum Neurio CT Extension Neurio W1 200 A CTs (Remote Metering) Maximum Extension Length Using Neurio CT extension harness (Tesla P/N 1125547-03-x) Up to 15 ft (4.5 m) Using 0.2-1.5 mm2 shielded twisted pair with drain wire Up to 50 ft (15 m) Neurio W2 200 A CTs (Remote Metering) Maximum Extension Length Using Neurio CT extension harness (Tesla P/N 1622289-00-x) Up to 15 ft (4.5 m) Powerwall 2 AC Installation Manual 21 T STEP 2: MOUNT POWERWALL AND THE BACKUP GATEWAY Anchor the Powerwall Mounting Bracket P NOTE: For detailed instructions on mounting Powerwall, including minimum spacing requirements, refer to Appendix A:Powerwall Mounting Details on page 51. 1. Using a drill and level, mount the bracket to the selected wall. See Appendix A:Powerwall Mounting Details on page 51 for additional details on the type and number of fasteners to use. Figure S. Mounting Bracket Dimensions 659 mm(26 in) 610 mm(24 in) 508 mm(20 in) 406 mm(16 in) i 305 mm(12 in) b O O 463 mm 582 mm O (23 in) <18.2 in) O O O 0 0 0 0 ���� o 0 0 of i i 640 mm(25.2 in) Powerwall 2 AC Installation Manual 22 STEP 2: MOUNT POWERWALL AND THE BACKUP GATEWAY 2. For back cable entry installations, drill a hole in the wall corresponding to the back cable entry port. Table 1. Location of Back Cable Entry Port in Relation to Bracket 14 mm (0.55 in) 14 mm � (0.55 in) I f 035 mm (1.375 in) 035 mm (1 .375 in) I, 24 mm (0.95 in o 68 mm 000 (2.7 in) 1092170-XX-H and lower 1092170-XX-J and higher 2012070-XX-B and lower 2012070-XX-C and higher 3012170-XX-Y (all) Mount Powerwall on the Bracket 1. Switch off Powerwall. AWARNING: Switching off will ensure Powerwall does not grid form. However, AC voltage may still be present from the grid. Ensure all equipment is safely de-energized before working. 74 i. O Powerwall 2 AC Installation Manual 23 STEP 2: MOUNT POWERWALL AND THE BACKUP GATEWAY 2. Remove the left side cover from Powerwall. ori I � ® a I i I Ii 3. Prepare Powerwall for side or back cable entry: a. For side cable entry installations, remove the side cable entry door from the left side cover. I i ii Powerwall 2 AC Installation Manual 24 STEP 2: MOUNT POWERWALL AND THE BACKUP GATEWAY b. For back cable entry installations, remove the plug from the back cable entry port and place it in the side cable entry port. G` NOTE: The plug must always be placed in either the back or side cable entry port. 1 a0 a 4. Using lift equipment, position Powerwall close to the wall and adjust the height of Powerwall until its mounting cleats are just above the flanges on the bracket. S. Lower Powerwall until the top cleat engages the top flange on the bracket and the bottom cleat aligns with the bottom flange. 6. With both cleats engaged, lower Powerwall onto the bracket. An audible click will be heard when the cleats are seated in the bracket and the locking mechanism at the center of the top flange clicks into place. G` NOTE: To remove Powerwall from the mounting bracket, place a thin piece of sheet metal between the Powerwall unit and the bracket to compress the locking mechanism, and lift the Powerwall straight up. Powerwall 2 AC Installation Manual 25 STEP 2: MOUNT POWERWALL AND THE BACKUP GATEWAY Figure 6. Mounting Powerwall on the Bracket O t O e p4° °O4q o Coq° 7. If floor-mounting Powerwall, use shims to ensure that Powerwall is level. The unit should be level within +/- 2 degrees side-to-side and within +/- 5 degrees front-to-back. 8. If wall-mounting Powerwall, remove the feet from the unit (applicable only to the updated versions of Powerwall, see Powerwall2 Identification by Mounting Bracket Height on page 12) G' NOTE: Step 8 applies only to updated versions of Powerwall, see Powerwall2 Identification by Mounting Bracket Height on page 12. Powerwall 2 AC Installation Manual 26 STEP 2: MOUNT POWERWALL AND THE BACKUP GATEWAY Mount the Backup Gateway 1. Using a hole saw, drill out the necessary cable access holes from the Backup Gateway. All cable knockouts are 3/4" in diameter but can be expanded to 2". Figure 7. Cable Access Drill Guides 2. If using top cable entry, remove the Top Hub Cap from the enclosure and install the Tesla Top Hub (Tesla P/N 1549184-00-A (2-inch kit) or Tesla P/N 1549184-01-A (1.25-inch kit)). o � o 3. Using a drill and level and %4" screws, mount the Backup Gateway enclosure. The provided sealing washers must be used when mounting the Backup Gateway. G, NOTE: Leave a minimum clearance of 57 mm above the Backup Gateway. 57 mm �o 0 0 0 0 O o 0 0 cl��a o NOTE: Mount the Backup Gateway vertically, in the orientation shown in Backup Gateway Enclosure Mounting Holes on page 28. Do not mount the Backup Gateway enclosure horizontally or upside down. Powerwall 2 AC Installation Manual 27 STEP 2: MOUNT POWERWALL AND THE BACKUP GATEWAY Figure 8. Backup Gateway Enclosure Mounting Holes 388 mm (15.3 in) 31 mm 0.2 in) 6 sw 519 mm <20.4 in) 642 mm (25.3 in) o eo e 00 00 Q°4 • a. 00 a 4. Locate the Backup Gateway serial number on the label on the dead front cover. Record the serial number for reference. Powerwall 2 AC Installation Manual 28 T STEP 3: CONFIGURE THE BACKUP GATEWAY FOR WIRING Remove Neutral-Ground Bonding Strap from Backup Gateway if Not Installed as Service Equipment Proper earth connection and Neutral-to-Ground bonding is required for safe operation of the Powerwall system and for compliance with local code requirements. When installed as Service Equipment, the factory-installed Neutral-Ground Bonding Strap bonds neutral to ground, as shown in Figure 8. The Neutral-Ground Bonding Strap must only be removed if not installed as Service Equipment, or for test purposes. Use a 7/16-inch socket to remove the two nuts attaching the Neutral-Ground Bonding Strap. If replacing the Neutral-Ground Bonding Strap, torque nuts to 65 in-lbs (7.4 Nm). Figure 9. Neutral-Ground Bonding Strap Location O o O o e ® s 000 M 00 o 0 0 - -- t Oo Oo oQ - o o � / o ® o 0 ®® � 4 � 4 ® o Oo po po oQ Oo @dpwdv o 0 ®°® ° ® o 0 0 i AWARNING: To ensure safe operation in Backup Mode, a local earth connection must be present on the site such as by earth rod or ground electrode. Connection of earth rod must comply with local codes. Powerwall 2 AC Installation Manual 29 T STEP 4: MAKE AC POWER CONNECTIONS Install Main Breaker in Backup Gateway When installed as Service Equipment, a main breaker must be installed. Eaton CSR or BW type breakers may be used; see Eaton Breakers on page 60 for compatible breakers. 1. Remove the S1 and S2 supply lugs using a 7/16-inch hex socket. 2. Install the main breaker, torqueing the two Sl and S2 nuts to 65 in-lbs (7.4 N-m) using a 7/16-inch hex socket. G, NOTE: Main breaker wire lug cover caps are recommended any time a main breaker is installed in the Backup Gateway Figure 10. Removing the S1 and S2 Supply Lugs to Install a Main Breaker a o 01 �( ° 0 0o o o 0 ✓0 0 - 0 ,g o ,a� o manwwarr 0 Make AC Power Connections to Supply and Load Panels In each of the following steps: • Strip the ends of the wires and insert into the corresponding Backup Gateway terminal lugs. • Using an appropriate torque tool, tighten the lugs according to the table on the following page. • Use copper or aluminum wire only. 1. Connect the supply conductors to the Backup Gateway Supply terminals according to Conductor Connections on page 31 and the accompanying table. 2. Connect the home load panel conductors to the Backup Gateway Backup terminals according to Conductor Connections on page 31 and the accompanying table. 3. For partial home backup with Non-Backup loads under 100 A, a Non-Backup panel can be connected. Connect the conductors (Ll, L2, Neutral, and Ground) from the Non-Backup panel to the Backup Gateway's Non-Backup terminals according to Conductor Connections on page 31 and the accompanying table. Powerwall 2 AC Installation Manual 30 STEP 4: MAKE AC POWER CONNECTIONS Any circuits connected here will not be powered when disconnected from the grid. During on-grid operation, these circuits are still metered by the internal site metering with no additional metering hardware required. WARNING: Always ensure all equipment is safely de-energized and locked out prior to working, to prevent risk of electric shock. To avoid shock hazard, never power on the system without a connection to Earth at the Gateway. WARNING: Incorrect wiring of AC conductors presents a risk of electrical shock or damage to equipment. Before energizing the system, ensure all connections are made correctly according to the instructions in this document and in accordance with local wiring codes and regulations. Refer to Appendix B: Wiring Reference on page 56 for all wiring requirements and recommendations, including wire colors and gauges. Refer to Appendix C:System Wiring Diagrams on page 61 for example system wiring diagrams. Table 2. Conductor Connections Supply Connections Home Load and Backup Connections Non-Backup Connections t db oy o� i �O O ;, O I I� O a , O i a. 1 rt Terminal Wire Gauge Tool Size Strip Length Torque Supply Lugs (Sl, S2) 6 AWG - 250 kcmil 5/16-in hex 1.25 in (32 mm) 275 in-lbs (31 N-m) Non-Backup Lugs (Ll, L2) 14 - 2 AWG 3/16-in hex 3/4 in (20 mm) 120 in-lbs (14 N-m) Backup Lugs (L1, L2) 6 AWG - 250 kcmil 5/16-in hex 1.25 in (32 mm) 275 in-lbs (31 N-m) Large Neutral Lugs 6 AWG - 250 kcmil 5/16-in hex 1.25 in (32 mm) 275 in-lbs (31 N-m) Large Earth Lugs 14 AWG - 2/0 3/16-in hex 3/4 in (20 mm) 120 in-lbs (14 N-m) Design Considerations Refer to Appendix F:Feature Notes on page 82 for information on the Backup Gateway load shedding feature, which can be used to interrupt any 60 V circuit when operating off-grid. Powerwall 2 AC Installation Manual 3' STEP 4: MAKE AC POWER CONNECTIONS Install Optional Internal Panelboard in the Backup Gateway The Internal Panelboard kit (Tesla P/N 1529623-00-x) may be installed in the Backup Gateway 2 and connected to either the Backup or the Non-Backup terminals by feeding a two pole breaker on the bussing. 1. Mount the Internal Panelboard into the Backup Gateway using the provided mounting screws (M5x12 hex bolts). a O 4q o O m 40 0 ® O � 0 2. Connect the internal panelboard to either the backup (2a) or non-backup (2b) lugs: a. Connect the L1 and L2 lugs on the bottom of the Internal Panelboard to the Backup lugs via the provided 105'C-rated CU wire jumpers. i ® � I ® ® ® o OO Oo O O® 10 . ® I c O ® ® O o ® ® 44 0 00 O �° s�ppdv c ---o® o i ®C �I o® a f1 11 Powerwall 2 AC Installation Manual 32 TSTEP - , MAKE Ar OWER CONNECTIONS b. ConnecttheNon'BaokupLugstoanEatonBRbreakeronthabussing (uptolO0A). or NOTE: The Eaton BR breakers are required when connecting the internal panelboard to the Non-Backup lugs to accommodate for wire gauge difference (see Backup Gateway 2 Wiring on page 57 for wire gauge ranges). --oo 3. Once all breakers have been installed, install the breaker hold-down if installing any back-fed or generation breakers unthe bussing. Mount the hold-down bracket using the provided (2) M5'0.8x12 Philips head screws. 4. Place the adhesive circuit label onthe deadfronttolabel circuits. Design Considerations The Internal Pane|board is2OOA'rated and supports 6x7 breaker spaces (12 circuits) using Eaton BA branch circuit breakers uptul2S4 maximum. The Powerwall connection to the Backup Gateway always requires a 30 A circuit breaker. This breaker serves as circuit protection for the Puwervva||. Breaker sizing and installation must comply with the National Electric Code. nowo".anaACInstallation Manual 33 T STEP 5: MAKE COMMUNICATIONS CONNECTIONS Connect Powerwall to the Backup Gateway POW NOTE: Refer to Appendix B: Wiring Reference on page 56 for wiring specifications. Depending on local requirements, Powerwall wiring can be installed through conduit or through a cable gland. Refer to local codes to determine wiring requirements. If necessary, use the included 1 in-to-32 mm or 1 in-to-25 mm reducing washers to adapt the cable gland to the wiring compartment inlet. 1. (Conduit installations only) Run conduit as needed and attach the conduit fitting to the inlet of the wiring compartment. The wiring compartment inlet accepts a standard 1-inch conduit fitting. 2. (Conduit installations only) If the conduit connector does not have an integrated bushing, affix the provided insulation bushing to the conduit opening on the inside of the wiring compartment. G` NOTE: Ensure that all conduit joints and outlets have smooth edges so that wiring is not damaged as it is run through the conduit. 3. Run the 4-conductor communication cable, the AC power conductors, and equipment grounding conductor from the Backup Gateway through the conduit or cable gland and pull them into the Powerwall wiring compartment. 4. At the Powerwall, strip the ends of the AC conductors and attach them to the corresponding leads on the AC power harness. S. Plug the AC power harness into the AC connector in the Powerwall wiring compartment. Ensure that the connector clicks into place. Figure 11. Powerwall 2 AC Power Harness Connection 000o p� O 0000 5N L2bLT OO O L N1 L2 Powerwall 2 AC Installation Manual 34 STEP 5: MAKE COMMUNICATIONS CONNECTIONS 6. On each end of the 4-conductor communication cable, strip and insert the wires into the provided 4- pin connectors (see figure below). On the Powerwall side, use the black connector provided in the accessory bag. On the Backup Gateway side, use the connector that came plugged into the corresponding connector socket in the Backup Gateway. Figure 12. Communication Connector Wiring 7. On the Backup Gateway side of the 4-conductor communication cable, cut back the drain wire. The drain wire should be terminated at the Powerwall chassis Earth terminal only. 8. On the Backup Gateway side, plug the 4-pin connector into the 4-pin socket labelled "Powerwall". Tighten screws on the connector. G, NOTE: See Backup Gateway 2 Communication Wiring on page 59 for diagrams and wiring specifications. 9. On the Powerwall side, plug the 4-pin connector into the bottom 4-pin socket (labeled "IN") in the Powerwall wiring compartment. 10. Plug the provided 4-pin connector with the terminating 120-Ohm resistor into the top 4-pin socket (labeled "OUT") in the Powerwall wiring compartment. (In multi-Powerwall installations, use this connector only in the last Powerwall in the chain.) 11. On the Powerwall side, strip the end of the equipment grounding conductor and wrap the communication cable drain wire around the grounding conductor lead. Powerwall 2 AC Installation Manual 35 STEP 5: MAKE COMMUNICATIONS CONNECTIONS 12. Insert the grounding conductor and drain wire in the Powerwall chassis Earth terminal (see figure below). The Earth terminal is identified with the following symbol:Q Tighten the screw in the Earth terminal to 4.5 Nm. Figure 13. Powerwall Earth/Ground and Communication Connections with a Terminating Resistor �q 000o pUT TT I �� n n 0000 o�f UIIVL�n � O® O - izv + GND 1 — CIN + -1 1 CN - �/ 1 1 — Drain -----------------------------1 — Ground NOTE: The Tesla Powerwall system supports ESS Operating Mode of Import Only, where it will not export active power from the battery to the Area EPS. The installer and the customer can select three standard modes of operation for the Powerwall: Backup, Solar Self-Powered, and Time of Use. All three of the modes of operations operate within the constraint of the Import Only ESS Operating Mode. L!D` NOTE: This system is equipped with a power control system (PCS) which is suitably rated to provide branch circuit overcurrent protection. The controlled current setting shall not exceed the rating of any controlled busbars or conductor ampacity. NOTE: The PCS controlled current setting for each PCS controlled conductor or bus bar shall be indicated with a field applied marking label on the conductor or in close proximity to the busbar. Figure 14. PCS Field Marking Label PCS Controlled Current Setting: The maximum output current from this system towards the main panel is controlled electronically.Refer to the manufacturers instructions for more information. WARNING: Only qualified personnel shall be permitted to set or change the setting of the maximum operating current of the PCS. The maximum PCS operating current setting shall not exceed the busbar rating or conductor ampacity of any PCS controlled busbar or conductor. WARNING: Configuration of power control settings system or changes to settings shall be made by qualified personnel only. Incorrect configuration or setting of the power control settings may result in unsafe conditions. Powerwall 2 AC Installation Manual 36 STEP 5: MAKE COMMUNICATIONS CONNECTIONS G` NOTE: The maximum operating currents in controlled busbars or conductors are limited by the settings of the power control system (PCS) and may be lower than the sum of the currents of the connected controlled power sources. The settings of the PCS controlled currents may be used for calculation of the design currents used in the relevant sections of NEC Article 690 and 705. NOTE: Maximum PCS Controlled Current setting: 200 A. Panel Limit Feature Site Controller Software UL 1741 Power Control System requirements and the "Panel Limits" feature are implemented in the Tesla Site Controller software. Tesla's Site Controller software is used across all Tesla Powerwall sites. Site Controller software controls the entire energy storage site and communicates over CAN and Wi-fi. The Backup Gateway or Neurio (W1/W2) meter are part of a Powerwall system and contain two current sensors, one per phase, to act as a site and/or solar meter, which measure the grid and uncontrolled power production sources. Feature Introduction As per requirement from NFPA 70: 2020, 705.13, Tesla Site controller software has implemented a Panel Limit feature that monitors the amperage flowing into an electric panel / busbar from all controlled and uncontrolled sources (Grid, Solar Inverter, and Powerwall). As the measured current approaches the configured panel limit, the Site Controller first reduces the current contribution of batteries, then limits the output of solar. If the measured current of all sources combined exceeds the configured Panel Limit for the site, the output of all PCS-controlled power production sources will be curtailed to 0. Solar Meter Site Meter La L Uncontrolled Source(s) Grid Controlled Source(s) "Virtual Panel" or Busbar Notes • The "Virtual Panel" may include several panels and conductors, and is considered as one single panel with respect to the Panel Limit feature. • Grid is measured by one or more physical site meters to measure the full current flowing into the virtual panel from the grid. • Uncontrolled Sources include external Solar Inverters or similar sources to the virtual panel • Controlled Sources include Tesla ACPW and Tesla Powerwall+ in any quantity and combination (e.g. two ACPW and one Powerwall+) Powerwall 2 AC Installation Manual 37 STEP 5: MAKE COMMUNICATIONS CONNECTIONS Example Single Line Diagrams for Common Installation Configurations • ACPW and Uncontrolled Solar Inverter and Gateway 2 North America for Whole Home Backup Virtual Panel Site Meter ���- Solar Meter Solar Inverter Backup panel Backup Gateway 2 Meter socket panel Grid Uncontrolled Source r=s � Optional System Shutdown Switch Powerwall • ACPW and Uncontrolled Solar Inverter and Gateway 2 North America for Partial Home Backup Vntua!Pace' Site Meter i %q mas F Solar Meter Solar Inverter Backup panel Backup Gateway 2 Main panel Meter socket panel Grid Uncontrolled Source i Optional System Shutdown Switch Powerwall Monitoring (2020 NEC, 705.13(A)) • Tesla Site Controller receives meter data from the Backup Switch or Backup Gateway 2 (meter X and/or meter Y), and/or Neurio (W1 / W2) • Tesla Site Controller receives controlled current data of the AC output from the AC Powerwall. • Current flowing into the Virtual Panel (positive current in all three meter types) is added together for comparison with the Panel Limit. • No additional /dedicated meters need to be installed nor configured. • Where communications are lost with any meter, all controlled power production sources are curtailed to 0. Powerwall 2 AC Installation Manual 38 STEP 5: MAKE COMMUNICATIONS CONNECTIONS Settings (2020 NEC, 705.13(B)) • The panel site limit setting is restricted to Tesla personnel only and can be set in the config file with 11panel_max_current" option. • As there may be more than one physical panel and conductors included, the panel limit is set to the rating of the smallest busbar within the "Virtual Panel". • By default, all Backup Switch installs are automatically configured with a 100A Panel Limit. As 100A is the minimum allowable size for a single family dwelling per NEC 230.79 (C), this protects any main panel busbar for a single family dwelling with any quantity of Tesla Powerwall Overcurrent Protection (2020 NEC, 705.13(C)) • The Tesla Site Controller software is certified under UL 1741 PCS as secondary overcurrent protection. • Overcurrent devices are still required for each circuit as required by the National Electrical Code. • Software curtails the output of the battery and solar as load approaches the Panel Limit. Once battery and solar have been curtailed, loads would be fed exclusively from the grid. Thus the busbar is protected by the main breaker, or the breaker in an upstream panel, as intended prior to the addition of secondary power sources. Single Power Source Rating (2020 NEC, 705.13(D)) • Each Powerwall connection to the electrical panel requires an independent 30 A circuit breaker. • This breaker serves as the disconnect for the unit, and must be wired in accordance with local wiring codes and regulations. • This breaker is by design smaller than the smallest panel used within the system, and smaller than the panel limit. • The service disconnect overcurrent rating is unchanged based on the Panel Limit. Access to Settings (2020 NEC, 705.13(E)) • The Panel Limit feature is only adjustable by a Tesla personnel. • The PCS controlled current setting will be auto enabled and the only method to change it will be to call Tesla, and for a tier 2 support person to adjust the setting via Tesla software programs, that are locked behind Tesla username and password. Install Optional Remote Disable Switch G, NOTE: This section provides guidelines on a system functionality. Please consult your local AHJ or Utility before use. The Backup Gateway 2 can be wired to include an external Remote Disable switch that simultaneously commands all Powerwalls to become idle and enter a safe mode. Installation Instructions The Remote Disable switch is wired through a low voltage, 12 V DC, control circuit connected to the Gateway AUX port. Powerwall 2 AC Installation Manual 39 STEP 5: MAKE COMMUNICATIONS CONNECTIONS Figure 15. Wiring a Remote Disable Switch to the Backup Gateway AUX Port 0 W Wa 1 2 3 4 5 O 12 0 O - ® II o 0 j ® ® 0 4 � O ® o � O o O ® ° �e O 0 G) --LE 0 Powerwall 2 AC Installation Manual 40 STEP 5: MAKE COMMUNICATIONS CONNECTIONS 1. Remove the factory-installed jumper from pins 1 and 2 of the 5-position "AUX" connector inside the Gateway 2. See Appendix B: Wiring Reference on page 56 for a diagram of the connector location. 2. Using minimum 24 AWG conductors (maximum 16 AWG), with wiring methods according to code, connect pins 1 and 2 (labelled "SDO" and "SDI") to a suitable disconnect switch. do 3. Confirm that all Powerwalls cease operation when the switch is open. Operation Initiate Remote Turn the switch to the OFF (open) position Disable All Powerwalls will go to idle. This behavior is the same whether the AC utility grid is present or not. Resume Powerwall Turn the Switch to the ON (closed) position Operation AC Grid Present AC grid not present (Off-grid or AC grid is down) Normal system operation will Powerwall operation will only resume when the resume shortly grid is back or a 12V jump start is provided to the Gateway Powerwall 2 AC Installation Manual 41 STEP 5: MAKE COMMUNICATIONS CONNECTIONS Guidelines for Remote Disable Switch Selection and Installation • Must be Listed or Recognized as "Emergency Stop Button", "Emergency Stop Device", "Emergency Stop Unit" • Must be Lockable on ON/OFF position • Must have a clear indication of ON/OFF position • Must be outdoor rated (NEMA 3R or higher) • Should be installed externally in a readily accessible location preferably near utility meter • The maximum low voltage wire run from switch to Gateway should not exceed 150 feet (45 m) • Should observe 12V, 0.1 A ratings Powerwall 2 AC Installation Manual 42 T STEP 6: INSTALL ENERGY METERING FOR THE SYSTEM About Energy Metering Visibility on power and energy data is needed for the Powerwall system to operate properly. An energy meter accomplishes this by measuring voltage (by voltage tap) and current (by Current Transformer, CT) at certain points in the system. There are many possible configurations for installing metering depending on system design. However, there are two goals: • Metering the Site - Site meters show the overall power flow to/from a site from the Grid's perspective. Thus, Site meter(s) must be installed upstream of all solar production, Powerwalls, and loads. Multiple physical Site meters can be installed together where needed, but their sum should capture all of the power flows from load, solar, and Powerwall(s). • Metering all Solar - Solar meters capture production from PV inverter(s). There must not be any loads or Powerwalls behind the Solar CTs. This would result in under- or over-estimation of solar production. Site and Solar Metering for Backup Gateway 2 Backup Gateway 2 makes metering simple with built-in options for Site and Solar metering: • Internal Primary Meter (Meter X) - This Site meter may be used when the Grid connection is at the Supply terminals. No additional steps are needed during install. If there are any loads or solar upstream of the Supply terminals, Tesla 100 A CTs connected to the Internal Auxiliary Meter can be used to measure loads less than 100 A, or a Remote Meter can be used to meter the Grid connection point. • Internal Auxiliary Meter (Meter Y) - Metering solar circuits inside the Gateway or in adjacent switchboards is simple with the three (3) internal CT connections for use with Tesla 100 A CTs (one included in the Accessory Kit). Additional Tesla 100 A CTs (Tesla P/N 1467316-00-x) may be ordered individually. The Tesla 100 A CTs may be extended a max distance of 330 ft (100 m) by splicing twisted pair or using the Tesla 100A CT Extension (10 ft/3 m) (Tesla P/N 1467274-00-x). Use 20 AWG (0.5 mm2) conductors or larger to extend CTs up to 330 ft (100 m). Voltage rating of the extension wire must be equal to or greater than all other adjacent circuits. Depending on site layout it may not be possible to use internal Gateway 2 meters, and Remote Energy Meters will be required. • See Appendix D: Configure Energy Metering on page 68 for further guidance on metering. • See Appendix E.- Installing a Neurio Energy Meter on page 69for Remote Neurio Meter installation instructions. Powerwall 2 AC Installation Manual 43 STEP 6: INSTALL ENERGY METERING FOR THE SYSTEM Install Tesla 100 A CTs AWARNING: Before installing, disconnecting, and/or adjusting CTs, ensure the circuits being measured are not energized and the system is completely powered down. Failure to de-energize the system may compromise operator and equipment safety. 1. Plug the Tesla 100 A CT into the terminal in the Backup Gateway. Ensure the connector is fully seated in the terminal. 2. Clamp the CT around the conductor to be measured. Figure 16. Embedded Site CTs and Solar CT Connectors . ; Oo 1 G fg I - h - i �O Tips • See Appendix D: Configure Energy Metering on page 68 for additional diagrams on configuring energy metering. • When metering split-phase 240 V solar inverters, a single CT on Ll or L2 can be used to meter production. • The CTI and CT2 terminals have voltage references to Ll and L2 respectively and cannot be reconfigured. The CT3 terminal has a default voltage reference to Ll but can be configured as L2 in the Commissioning Wizard. • Ensure CTs are facing the proper direction as indicated on the label. A CT will show negative current if installed backwards. • When upgrading a Gateway 1 system, the existing Remote (Neurio) Energy Meter(s) may be left in place and re-paired with the new Gateway. The Remote Meter must be power cycled within one minute prior to re-pairing. If metering Site power with the Remote Meter, ensure the Backup Gateway 2 internal site meter is de-selected in Commissioning. • See Appendix G: Installation Troubleshooting on page 85 for CT configuration troubleshooting tips. • The Powerwall installer has the option to set a Conductor Export Limit, or a Site Charge Limit. When used, the Powerwall will dynamically curtail to meet these site-specific programmed thresholds. See Appendix F: Feature Notes on page 82 for more information. Powerwall 2 AC Installation Manual 44 T STEP 7: COMPLETE THE INSTALLATION Plan Internet Connection for the Backup Gateway 2 Internet connectivity is required to receive the full 10-year Powerwall warranty, and for the customer to see their system in the Tesla App. For best performance, ensure Ethernet and Wi-Fi connections are both configured during commissioning. The Gateway will automatically select the network option with best connection. Cellular is available only as a backup connection when Wi-Fi and Ethernet connections are lost. Cellular should not be relied on as the default connection method. Install Ethernet Connection • Ethernet cable must be CATS (24 AWG) cable at minimum. • If not possible to run an Ethernet cable directly to the customer's network router, Powerline Ethernet socket adapters may be used. • See Appendix B.- Wiring Reference on page 56 for the position of the Ethernet port. Close the Wiring Compartments and Turn the System On 1. Before closing any installed hardware, take photos of the completed wiring in the Powerwall, Backup Gateway, and main distribution board. 2. Ensure that all conduit junctions and cable entry points are secure and properly sealed. 3. Arrange the communication and AC power wires neatly inside the Powerwall wiring compartment. 4. Replace the cover on the Powerwall wiring compartment. Ensure that the cover seats properly on the gasket so that the compartment is sealed. Using a Torx T20 bit, tighten the fasteners to 1.5 Nm. 5. Replace the left side cover on Powerwall by pushing the top into place and working toward the bottom to reattach it to the clips along the length of the unit. Powerwall 2 AC Installation Manual 45 STEP 7: COMPLETE THE INSTALLATION 6. Install the Backup Gateway dead front panel and secure it firmly with the original screw. Mount the Backup Gateway door, and latch it shut. Figure 17. Install the Dead Front Cover and Glass Door a I� 7. Use the provided breaker label sheet to clearly label the circuit breakers. G, NOTE: If the Backup Gateway is installed outdoors or in ahigh-traffic area, the latch can be locked shut. 8. Switch on the AC circuit breakers for the Backup Gateway and Powerwall. AWARNING: Upon powering on the Backup Gateway and Powerwall system, allow it to boot up undisturbed for at least one minute. Do not power cycle or reset the Backup Gateway during this time, as the boot sequence must be completed for the software to operate properly. 9. Switch on Powerwall by moving the switch on the right side of the unit to the ON position. When Powerwall establishes communication with the Backup Gateway, the LED on the right side of Powerwall illuminates. CAUTION: Always leave site with Powerwall breaker closed for battery to maintain a base level of charge. Leaving the Powerwall disconnected from AC for extended periods increases risk of damage. Powerwall 2 AC Installation Manual 46 T STEP 8: COMMISSION THE SYSTEM Commission the System 1. Locate the label on the Backup Gateway deadfront. Using a smartphone, scan the QR code on the label to establish Wi-Fi connection with the Backup Gateway. C— Ed O .` '� TPN:1232100-XX-X TSN:TGYYYYYYYY YY -1060 ' 'o Password:ZZZZZZZZZZ Join TEG —X Wi-Fi G' NOTE: To connect to the Backup Gateway via Ethernet, connect a computer to the Ethernet port of the Backup Gateway with a standard CATS Ethernet cable. Powerwall 2 AC Installation Manual 47 STEP 8: COMMISSION THE SYSTEM 2. Open a browser and navigate to http://TEG-YYY where YYY are the last 3 digits of the Backup Gateway serial number. TPN:1232100-XX-X TSN:TGYYYYYYYYY YO Password:ZZZZZZZZZZ ad 9A1 AM 0$100% *f http://TEG YYY O G, NOTE: If the Backup Gateway Wi-Fi network doesn't appear or the connection to the Backup Gateway fails, power cycle the Backup Gateway using the Reset button, wait 2 minutes, and try connecting again. 3. Once communication is established, the browser may show a Security Warning page. This is normal. To enter the Commissioning Wizard, click Advanced and then Proceed. The browser should then show the login page to the Commissioning Wizard. 4. Log into the Commissioning Wizard: • Username: Enter the e-mail address of the installer who is carrying out the work • Password: Enter the password on the deadfront label o Click Continue .d. hUPWTEG� • I I Engnth v I I i n sta l le raucompa n y.co m I 2 .` �� TPN:1232100-XX-X I TSN:TGYYYYYYYYY YQ- p Password:ZZZZZZZZZZ jZzzzZZZZZZ Powerwall 2 AC Installation Manual 48 STEP 8: COMMISSION THE SYSTEM G` NOTE: For systems with firmware version 1.48+, the password will only be required the first time the installer logs in to commission the system. Once the system has been commissioned, the Commissioning Wizard will prompt the installer to log in by toggling the On/Off switch on one connected Powerwall. If the Powerwall(s) are unable to communicate with the gateway, the password will be available as an alternative login. S. Connect the Backup Gateway to the Internet by the following means: G, NOTE: Either an Ethernet or a Wi-Fi connection must be connected. For best reliability, ensure Wi-Fi and Ethernet options are both configured. Wi-Fi (2.4 or 5 GHz) Ethernet • In the Commissioning Wizard, click the arrow o In the Commissioning Wizard, click the for Wi-Fi arrow for Ethernet • Scan and locate the home Wi-Fi network o Choose DHCP (most common) or Static name (SSID) (only if necessary and you know the • Enter the homeowner's network password Network settings) • Click the blue arrow o Click Connect G' NOTE: Cellular connection must only be relied on as fallback connection if Wi-Fi and/or Ethernet is lost. 6. Click Check Connection to verify that the Internet connection is working. Click Continue. G' NOTE: See Appendix G:Installation Troubleshooting on page 85 for troubleshooting steps on accessing the Commissioning Wizard. 7. Click Check for Update to apply any firmware updates to the Backup Gateway and Powerwall. After the update is staged, click Update. After the update is complete, re-establish connection to the Backup Gateway and the Internet, starting with procedure #1 above. AWARNING: Software updates may take several minutes, especially for installations with multiple Powerwalls. Never power down during an update, as it may result in damage to the system. 8. Follow the Commissioning Wizard steps to complete the commissioning process. Finish and Demonstrate the Installation 1. After installation is complete, remove the protective film from Powerwall. 2. Remove the plastic straps from the left and right side covers by cutting them and carefully pulling them through the slots in the covers. 3. If necessary, ask the homeowner to download and install the Tesla mobile app and connect to the system. 4. Demonstrate the capabilities of the Tesla mobile app, such as how to change the operation mode. 5. Simulate an outage by opening the main breaker and show that Powerwall is powering backup loads. 6. Leave the Powerwall Owner's Manual with the owner of the newly installed system. 7. Archive the photos from the installation. Powerwall 2 AC Installation Manual 49 STEP 8: COMMISSION THE SYSTEM Troubleshooting See Appendix G:Installation Troubleshooting on page 85 for common installation troubleshooting steps. Technical Support Resources for Certified Installers, including service request forms and the latest versions of installation manuals, are available within the Tesla Partner Portal: https.Ilpartners.tesla.com Maintenance Powerwall does not require pre-scheduled preventative maintenance. The only maintenance required by an owner is to keep the unit connected to the internet and free and clear of debris, especially around the air intake and exhaust. To clean Powerwall, use a soft, lint-free cloth. If needed, the cloth can be dampened with mild soap and water only. Do not use cleaning solvents to clean Powerwall, or expose Powerwall to flammable or harsh chemicals or vapors. Powerwall 2 AC Installation Manual 50 T APPENDIX A: POWERWALL MOUNTING DETAILS Powerwall Space Requirements Figure 18. Powerwall 2 Mounting Bracket Dimensions and Space Requirements 659 mm(26 in) 50 m m 610 mm(24 in) _y • 508 mm(20 in) (2 In) 406 mm(16 in) 305 mm(12 in) o o c�D b T = 5 L n ❑ 50 mm 150 mm 8Z (n (2 in) (6 in) 582 nwn El (23 w 0 640 mm(25.2 In) Minimum lateral wall space 38 in (960 mm) Minimum clearance from left side (air intake) 2 in (50 mm) Minimum clearance from right side (air exhaust) 6 in (150 mm) Minimum clearance above single Powerwall 2 in (50 mm) Minimum clearance above side-by-side Powerwalls 12 in (300 mm) Minimum clearance between side-by-side Powerwalls 10 in (250 mm) Maximum height above ground 39.5 in (1 m) to bottom of unit Maximum slope +/- 20 side-to-side +/- 5° front-to-back G, NOTE: Powerwall has a pump and fan that produce a gentle hum during operation, comparable to a typical refrigerator. The noise level depends on the ambient temperature and the power level of operation. Consider these noise levels when choosing where to install Powerwall. Powerwall 2 AC Installation Manual 5? APPENDIX A: POWERWALL MOUNTING DETAILS Mounting Bracket Anchoring Details NOTE: The details below are minimum guidelines and are not guaranteed to be applicable. Refer to local building codes to ensure the use of appropriate fasteners. Pefer to Powerwall2Anchorage Details for complete mounting information. Wood Studs (spaced at 12, 16, 20 or 24 inches) If anchoring directly into wood studs, use at least four (one o o o o , o 0 in each corner) 1/4-inch wood screws with washers, of sufficient length for at least 2.5 in embedment into the studs. o ❑ 0 0 o c o o coo 0 0 i Wood Studs (spaced at 12, 16, 20 or 24 inches) If anchoring to blocking between wood studs, use T- minimum 2 x 4 in blocks, end-nailed into studs with two 16d nails or toe-nailed into studs with four 8d nails. Use at o least four (one in each corner) 1/4-inch wood screws with ❑ washers, of sufficient length for at least 2.5 in embedment ❑ into the blocking. ❑ 0 Powerwall 2 AC Installation Manual 52 APPENDIX A: POWERWALL MOUNTING DETAILS Plywood oo�o o�oo If anchoring to plywood wall material, the plywood must be minimum 1/2-inch thick. Use at least four (one in each corner) 1/4-inch wood screws with washers, of sufficient o length to penetrate at least 1/4 inch beyond the backside ❑ of the plywood. ❑ ❑ ❑ 0 D *DC= - oc$ioo Metal Studs (spaced at 12, 16, 20 or 24 inches) If anchoring directly to metal studs, studs must be o o o o o 0 minimum 18 gauge. Use at least four (one in each corner) #14 sheet metal screws with washers, of sufficient length to penetrate at least 3 threads beyond the stud. ❑ 0 ooCO)o oc$Doo Metal Studs (spaced at 12, 16, 20 or 24 inches) 4D W If anchoring to backing between metal studs, studs must be minimum 25 gauge, and backing must be minimum 22 gauge. Use at least eight (two in each corner) #14 sheet o metal screws with washers, of sufficient length to ❑ penetrate at least 3 threads beyond the backing. ❑ 0 Powerwall 2 AC Installation Manual 53 APPENDIX A: POWERWALL MOUNTING DETAILS Metal Studs (spaced at 12, 16, 20 or 24 inches) If anchoring to backing between metal studs in an outdoor ' high wind area, studs must be minimum 25 gauge, and backing must be minimum 22 gauge. Use at least twelve o (three in each corner) #14 sheet metal screws with washers, of sufficient length to penetrate at least 3 threads beyond the backing. r � Concrete or Masonry a�oo oo�o Minimum strength must be 2500 PSI (concrete) or 1500 PSI (masonry). ° Use at least four (one in each corner, in any available anchor slot) minimum 1/4-inch fasteners with washers, of sufficient length for at least 1.5 in (38 mm) embedment into ❑ the material. Ensure that all fasteners are at least 1.5 in (38 - mm) away from the edges of masonry blocks . When required, use 3/8-inch ESR fasteners and full embedment as required by the ESR and fastener schedule. For stacked units and sever seismic (SS >_ 2.6) or wind (Wind Speed (ULT) >_ 160mph) conditions, use at least eight (two in each corner, in any available anchor slot) fasteners. Brick Minimum strength must be 1700 PSL o o o o Use at least four (one in each corner, in any available anchor slot) 3/8-inch mesh anchor sleeves, of sufficient—� length for at least 3 1/8-inch embedment into the material, filled 75% with adhesive. ❑_ �I 0 ec::e_� i I• o o e$E)o I Powerwall 2 AC Installation Manual 54 APPENDIX A: POWERWALL MOUNTING DETAILS Channel Strut (Unistrut) Struts must be minimum 1-5/8 in x 1-5/8 in, 12 gauge. If mounting on wood studs, attach the strut to at least o three studs, using at least one 1/4-inch wood screw with ❑ washer per stud, of sufficient length for at least 2.5 in ❑ embedment into the studs. ❑ If mounting on metal studs, attach the strut to at least ❑ three studs, using at least two #14 sheet metal screws with 0 washers per stud, of sufficient length to penetrate at least o 3 threads beyond the studs. To attach the bracket to the struts, use at least four (one in each corner) 1/4-inch hex head screws with washers and strut nuts. Powerwall 2 AC Installation Manual 55 T APPENDIX B: WIRING REFERENCE Powerwall Wiring 1234 5 6 7 o 66oOUT 9��TA— U HU O® O ti Table 3. Powerwall Wiring: Communication Powerwall Terminal Recommended Wire Color Wire Gauge 1 12V + (Logic +) Brown 18 - 16 AWG (0.8 - 1.5 mm2) 2 GND (Earth) White 18 - 16 AWG (0.8 - 1.5 mm2) 3 CN + (CAN HI) Blue 24 - 16 AWG (0.2 - 1.5 mm2) 4 CN - (CAN LO) Yellow 24 - 16 AWG (0.2 - 1.5 mm2) Cable Shield/Drain Wire (Terminate at Powerwall chassis ground lug only) Table 4. Powerwall Wiring: Powerl Powerwall Terminal Recommended Wire Color Wire Gauge 5 L2 (Line 2) - to Neutral Red 10- 8 AWG (6 - 10 mm2) 6 N (Neutral) White 10 - 8 AWG (6 - 10 mm2) 7 Ll (Line 1) Black 10 - 8 AWG (6 - 10 mm2) 8 Chassis Ground Lug Green /Yellow 10 - 8 AWG (6 - 10 mm2) Depending on local code for installation methods and cable sizing calculations. G` NOTE: Refer to local codes and standards for correct wiring practices and wire colors. Powerwall 2 AC Installation Manual 56 APPENDIX B: WIRING REFERENCE (2) Wago lever nuts are provided for use with up to 6 mm2 AWG cable. If 10 mm2 cables are required per wiring methods, other appropriate connectors may be used, or a junction box near the Powerwall can be used to convert from 10 to 6 mm2 cables. Follow all code wiring requirements. G, NOTE: Suitable wire ferrules may be used with Wago connectors, but are not required. Backup Gateway 2 Wiring C e 999 _ 999 oOe I I I I r y ' 1 If-_.... j I H o of L_1 J o D " G i Q 0 o `°� O ® zUUDUDL o ®® ® ® saewUP4 0 A 0 ® o P Without Internal Panelboard With Internal Panelboard Table S. Backup Gateway 2 Wiring: Power Component Recommended Wire Wire Gauge Torque Color A Ethernet Terminal - 24 AWG CATS or better - B Main Ground Terminals Green or Bare 6 AWG - 2/0 120 in-lbs (14 N-m) C Load/Generation Green or Bare See Neutral Bar and See Neutral Bar and Ground Terminals Ground Bar Torque Specs Ground Bar Torque Specs on page 58 on page 58 D Supply Terminals (L1, Black, Red 6 AWG - 250 kcmil 275 in-lbs (31 N-m) L2) E Backup Loads and Black, Red 6 AWG - 250 kcmil 275 in-lbs (31 N-m) Generation (Ll, L2) F Main Neutral Terminals White 6 AWG - 250 kcmil 275 in-lbs (31 N-m) G Load/Generation White See Neutral Bar and See Neutral Bar and Neutral Terminals Ground Bar Torque Specs Ground Bar Torque Specs on page 58 on page 58 H Neutral-Ground - - - Bonding Strap Powerwall 2 AC Installation Manual 57 APPENDIX B: WIRING REFERENCE Component Recommended Wire Wire Gauge Torque Color I Non-Backup Loads (Ll, Black, Red 14 - 2 AWG 120 in-lbs (14 N-m) L2) J RESET button - - - K Optional Internal Black, Red 300 kcmil - 1 AWG 225 in-lbs (25 N-m) Panelbard Terminals Use copper or aluminum conductors. Figure 19. Backup Gateway 2 Neutral Bar and Ground Bar -- y -- - o ° ® 00 4 0 00 0101e)) o OOO CO CJ �� O 0 0 0 0 i G) Table 6. Neutral Bar and Ground Bar Torque Specs Terminal Wire Gauge 1 Torque 14 AWG - 10 AWG 20 in-lbs (2.3 N-m) 1 8 AWG 25 in-lbs (2.8 N-m) 6 AWG - 4 AWG 35 in-lbs (4.0 N-m) 14 AWG - 10 AWG 35 in-lbs (4.0 N-m) 8 AWG 40 in-lbs (4.5 N-m) 2 6 AWG - 4 AWG 45 in-lbs (5.1 N-m) 3 AWG - 1.0 50 in-lbs (5.6 N-m) 14 AWG - 10 AWG 35 in-lbs (4.0 N-m) 3 8 AWG 40 in-lbs (4.5 N-m) 6 AWG - 4 AWG 45 in-lbs (5.1 N-m) Powerwall 2 AC Installation Manual 58 APPENDIX B: WIRING REFERENCE Backup Gateway 2 Communication Wiring ° - Powerwall I 1234 i Aux 12345 o • • 0 4.4 Comms ° °•��a� ° 123456 ® Jump ° a 12 L1-10- Table 7. Backup Gateway Communication Wiring Terminal Name Recommended Wire Color Wire Gauge 1 12V + (Logic +) Brown 18 - 16 AWG (0.8 - 1.5 mm2) 2 GND (Earth) White 18 - 16 AWG (0.8 - 1.5 mm2) 3 CN + (CAN HI) Blue 24 - 16 AWG (0.2 - 1.5 mm2) 4 CN - (CAN LO) Yellow 24 - 16 AWG (0.2 - 1.5 mm2) Table S. Aux Wiring Terminal Name Recommended Wire Color Wire Gauge 1 Remote Disable (OUT) - 24 - 16 AWG (0.2 - 1.5 mm2) 2 Remote Disable (IN) - 24 - 16 AWG (0.2 - 1.5 mm2) 3 Generator/ Load Control (+) Red 18 - 16 AWG (0.8 - 1.5 mm2) 4 Generator/ Load Control (-) Black 18 - 16 AWG (0.8 - 1.5 mm2) 5 Interlock pin - 24 - 16 AWG (0.2 - 1.5 mm2) Table 9. External Meter Communication Wiring Terminal Name Recommended Wire Color Wire Gauge 1 GND (Earth)/Shield - 24 - 16 AWG (0.2 - 1.5 mm2) 2 RS485 HI #1 Red 24 - 16 AWG (0.2 - 1.5 mm2) 3 RS485 LO #1 Black 24 - 16 AWG (0.2 - 1.5 mm2) 4 GND (Earth)/Shield - 24 - 16 AWG (0.2 - 1.5 mm2) 5 RS485 HI #2 Red 24 - 16 AWG (0.2 - 1.5 mm2) 6 RS485 LO #2 Black 24 - 16 AWG (0.2 - 1.5 mm2) Powerwall 2 AC Installation Manual 59 APPENDIX B: WIRING REFERENCE Eaton Breakers Eaton CSR 25 kAIC Breakers Amps Part Number Description 100 CSR2100 Eaton # CSR210ON: 100A MB; 2-Pole, 240V, 25kAIC, For Convertible Load Centers 125 CSR2125N Eaton # CSR2125N: 125A MB; 2-Pole, 240V, 25kAIC, For Convertible Load Centers 150 CSR21SON Eaton # CSR21SON: Breaker, 150A, 2P, 120/240V, 25 kAIC, Type CSR 175 CSR2175N Eaton # CSR2175N: 175A MB; 2-Pole, 240V, 25kAIC, For Convertible Load Centers 200 CSR220ON Eaton # CSR220ON: 200A MB ONLY; 2-Pole, 120V/24OV, 25kAIC, Bolt On Eaton BW 10 kAIC Breakers Amps Part Number Description 100 BW2100 Eaton # BW2100: 100A Main Circuit Breaker; 2-Pole, 240V, 10kAIC 150 BW2150 Eaton # BW2150: Circuit Breaker; 150A/24OV/2P 175 BW2175 Eaton # BW2175: Circuit Breaker; 175A/240V/2P 200 BW2200 Eaton # BW2200: 200A Main Circuit Breaker; 2-Pole, 240V, 10kAIC Eaton BWH 25 kAIC Breakers Amps Part Number Description 100 BWH2100 Eaton # BWH2100: 100A Circuit Breaker; 2-Pole, 120V/24OV, 25kAIC, Bolt On 125 BWH2125 Eaton # BWH2125: 125A Circuit Breaker; 2-Pole, 120V/24OV, 25kAIC, Bolt On 150 BWH2150 Eaton # BWH2150: 150A MB; 2-Pole, 120V/24OV, 25kAIC, Bolt On 175 BWH2175 Eaton # BWH2175: 175A MB; 2-Pole, 120V/24OV, 25kAIC, Bolt On 200 BWH2200 Eaton # BWH2200: 200A MB; 2-Pole, 120V/24OV, 25kAIC, Bolt On Powerwall 2 AC Installation Manual 60 T APPENDIX C: SYSTEM WIRING DIAGRAMS Overview The following diagrams are intended for illustration purposes only. Drawings represent sample site layouts to show example system layout and metering. These diagrams should not be considered complete plan sets. The Wiring Key below illustrates how the lugs in the Backup Gateway are connected. Figure 20. Backup Gateway 2 Wiring Key Optional Internal Panelboard Non-Backup lugs Ll ' - L20- Neutral 2 -Neutral lugs Sl S2 N Ll L2 N supply connections(2m) Backup lugs Main lugs or main breaker— Whole-Home Backup • All loads and generation are downstream of the Backup Gateway contactor. • Site-level metering by integrated Site CTs. • Internal panelboard kit may be used for Generation breakers. • Neutral-Ground Bonding Strap installed only if Gateway is main service equipment. Powerwall 2 AC Installation Manual 61 APPENDIX C: SYSTEM WIRING DIAGRAMS Figure 21. Whole Home Backup with Standalone Meter Utility Meter Solar Inverter - ------� ----- Backup Gateway 2 Ll L2 - N Solar CT (connected to Internals UJ7 Auxiliary Meter) 6 : PCS Ow -Controlled 1 } Conductors 4 �Vi 6 �J Internal Primary N-GND j ` Meter bonding strzp °O o p Main ® @ Breaker IN wUD --�- �a�� j "0 ® OCD CD 0", Powerwall GND 61 Ll N Ll L2 GND ' e L1 ® ® e L e IN ® e GND e ® ® e e ® ® e e ® ® e e ® ® e e ® ® e El ® ® e Backed-up e ®I ® e Home Loads eH ® ® e e s Main Panel Powerwall 2 AC Installation Manual 62 APPENDIX C: SYSTEM WIRING DIAGRAMS Figure 22. Whole Home Backup with Meter Load Center Utility Meter Main iBreaker e e ; e e�Solar Inverter ! Backup Gateway 2 Ll 64 GND L2 t Solar CT _ N (connected to Internal Auxiliary Meter) sx '= t ♦ t Internal Removed o Primary Neutral-Grou d ®' • • Meter Bonding Stra 3 o ®IN 0 o my er OO O Powerwall GND 61 N L7 L2 GND e e L N e GND e ® ® e s ® lin e e e a IZ➢ ® 5 9 � 9 Backed-up d Home Loads 9 i _J Main Panel Powerwall 2 AC Installation Manual 63 APPENDIX C: SYSTEM WIRING DIAGRAMS Partial-Home Backup • Non-Backup loads (refer to design guidance for information on selecting circuits to back up) • If Non-backup loads connected to Non-Backup Lugs, site-level metering by integrated Site CTs. • If Non-backup loads are upstream of Gateway, site-level metering by integrated Site CTs plus additional 100 A CTs on 1-1/1-2 of non-backup circuit, or by remote meters at point of interconnection. • Internal panelboard kit may be used for Generation breakers or Non-Backup loads. • Neutral-Ground Bonding Strap installed only if Gateway is main service equipment. Powerwall 2 AC Installation Manual 64 APPENDIX C: SYSTEM WIRING DIAGRAMS Figure 23. Partial Home Backup with Standalone Meter Utility Meter J Backup Gateway 2 U LZ __.._. N ° PCs i, -Controlled Conductors Non Backed-up Internal Loads ' © 01 Primary Meter - ® O;' Main N-GND ' !-0110 1 Breaker bonding strap •'00 �• � •a�w�a�o 0 a n 7G e "'11 Solar CT [ NLl GND (connected to Internal ! L Auxiliary Meter) I i Solar Inverter e a GND a e N e e Ll e e L s ® e e ® ® e e ® ® e s � e Powerwall e ® RD a Backed-up ® Home Loads 6 a ®e EH ® a IN D d� ® ® a OCD CD ® ® GND.,a O J ® ® ® ® L2 fl I e a N GND Main Panel Powerwall 2 AC Installation Manual 65 APPENDIX C: SYSTEM WIRING DIAGRAMS Figure 24. Partial Home Backup with Standalone Meter - Option Using Secondary Load Lugs Utility Meter �l - IBackup Gateway 2 LI-- L2 N u r rp D � xI Non Backed-up 1*q� Internal Loads iL�; - ,_ Primary J — Meter 0 o ® .; —. Main N-GND Breaker bonding p stra °•• Lj® •�1�P1� 01 ,o to®®I; i Solar CT (connected to Internal N Li L2 GND N L1 L2 GND Auxiliary Meter) i Solar Inverter ® H e GND e e e e N e s e e Ll e ® ® e e ® ® e L e ® ® e e ® e 6 9 9 ® q 9 ® ® 6 6 e Powerwal I e e s ® ® e Backed-up ® ® aa IN ® ® a Home Loads of®' ® e ® ® a 00 O ® ® e e e GND El I I O—LIJ IM ® L2fl I e a a H GND Generation Panel Subpanel Powerwall 2 AC Installation Manual 66 APPENDIX C: SYSTEM WIRING DIAGRAMS Figure 25. Partial Home Backup with Meter Load Center Utility Meter Main Breaker r / Non-backup loads ® 0 b Solar Inverter Backup Gateway 2 Ll —, GND L2 Solar CT (connected to Internal ° t Auxiliary Meter) Site CTs (connected to Internal .y'. Auxiliary • Meter) Removed o Neutral-Groun I • 1 Bonding o Str a Q7 Q'e Internal m u ® Primary ®,� • . r • Meter 00 0 i a 0 a� o �o 0 Powerwall GND N Ll L2 GND i � N A L1 e L q N e e GND q q q e q q q 9 ® 10 9 In'I q Backed-up 10 Home Loads Le Main Panel Powerwall 2 AC Installation Manual 67 T APPENDIX D: CONFIGURE ENERGY METERING Solar Metering Install the solar CT on the solar wire START 1 / Inside Backup Gateway Install an Install the solar CT Is there solar Yes Where Is the Greater than 100m ♦ external ® on the solar wire on site? solar located? from Backup Gateway Neurio meter and connect the CT to the Neurio No Within 100m of Backup Gateway 1 1 Wim Extend the solar CT No action needed lead and install the CT on the solar wire Site Metering START Z the upstream Are there any loads be connected to upstream of the Backup Yes the Backup Gateway No—► Install an external Gateway supply terminals? non-backup Neurio meter \ terminals? No If' Yes IF Use the Backup Install site CTs on the Gateway internal site meter site wires and connect to the Neurio meter Powerwall 2 AC Installation Manual 68 T APPENDIX E: INSTALLING A NEURIO ENERGY METER Neurio Energy Meter Overview If additional energy metering is required (in addition to the built-in metering), remote Neurio Energy Meter(s) may be paired with Backup Gateway. Beginning with Powerwall firmware 21.13, Tesla supports both the Neurio W1 (Tesla P/N 1112484-02-x) and Neurio W2 (Tesla P/N 1112484-04-x) meters and their accessories. While the meters serve the same applications, there are some differences between them which will be called out in the following sections. It is very important to note that Neurio W1 accessories are not compatible with the Neurio W2 meter, and Neurio W2 accessories are not compatible with the Neurio W1 meter. Important Notes �y Powerwall Software Version �J Neurio W2 is supported in Powerwall version 21.13 and later. When commissioning systems with the Neurio W2 meter, ensure the software has been updated to at least this version to allow pairing and reading from the meter. Neurio W2 Currently Only Supports Wi-Fi Connections Neurio W2 currently only supports Wi-Fi connections; no wired (RS-485) connections are supported at this time. No800ACTs Currently there are no 800 A CTs available for the Neurio W2 meter. For sites requiring 800 A CTs, a Neurio W1 meter with Neurio W1 800 A CTs is available for purchase. CTs are not Backwards Compatible The Neurio W2 meter uses a new 4-wire CT which is not compatible with Neurio W1 meters (nor are Neurio W1 CTs compatible with Neurio W2 meters). Powerwall 2 AC Installation Manual 69 APPENDIX E: INSTALLING A NEURIO ENERGY METER Figure 26. Neurio W1 Meter Kit with 200 A CTs 1_ Figure 27. Neurio W2 Meter Kit with 200 A CTs G, NOTE: When replacing a Gateway, the existing Neurio Energy Meter(s) may be left in place in the main distribution board and re-paired. The Neurio Meter must be power cycled within one minute prior to re-pairing. If metering Site power with the Neurio Meter, ensure the Gateway's internal site meter is deselected in Commissioning. Powerwall 2 AC Installation Manual 70 APPENDIX E: INSTALLING A NEURIO ENERGY METER Wireless Communication to the Backup Gateway The Neurio Energy Meter (Tesla P/N 1112484-00-x) is wirelessly paired with Backup Gateway as part of the normal Powerwall commissioning process within the Commissioning Wizard. Wired Communication to the Backup Gateway As an alternative to wireless communication with the Neurio Wl meter, it is possible to establish wired communication between the meter and the Gateway using an optional 2-conductor meter communication harness (Tesla P/N 1133339-00-x). Up to two meters can be wired directly to the Gateway. G, NOTE: The Neurio W2 meter only supports Wi-Fi connections; there is no RS-485 harness available for the Neurio W2 meter. If the meter is located outside the Gateway, the harness leads can be extended by splicing additional wire to the harness. See Maximum Tesla CT Extension on page 21. The meter antenna is always required, even if the meter is located inside the Backup Gateway enclosure or connected to the Gateway using the optional wired communication harness. G' NOTE: Tesla recommends connecting the meter via wireless Wi-Fi rather than using a wired connection. This is because the meter receives firmware updates with new features and improvements, but only if the meter is communicating to the Gateway via Wi-Fi. Firmware updates are not possible when the meter is using wired communication. If you must use wired communication, connect the meter to the gateway wirelessly first to update the meter firmware, then transition to wired communication. 1. Plug the 2-conductor harness into the port on the top of the meter. 2. Connect the harness leads to the Backup Gateway Meter Communication ports by inserting them into the corresponding connector, according to the following table and diagram. Powerwall 2 AC Installation Manual 71 APPENDIX E: INSTALLING A NEURIO ENERGY METER Figure 28. Meter Communication Wiring 1 2 3 #2 L❑❑❑ ❑❑ ❑❑ O 0-51 ass ' 1 I 1 1 1 1 1 1 1 2 3 #1 1 OOO 00 -- 1 1 COMMS 0 456 I 1 1 1 1 1 1 1 123456 o. a Meter #1 Communication Meter Terminal Backup Gateway Meter Wire Gauge Port Pin Communication Pin 3 RS485 LO 3 24-16 AWG (0.2-1.5 mm2) or CATS (24 AWG) 6 RS485 HI 2 24-16 AWG (0.2-1.5 mm2) or CATS (24 AWG) (Harness shield) (Earth/Shield) 1 24-16 AWG (0.2-1.5 mm2) or CATS (24 AWG) Meter#2 Communication Meter Terminal Backup Gateway Meter Wire Gauge Port Pin Communication Pin 3 RS485 LO 6 24-16 AWG (0.2-1.5 mm2) or CATS (24 AWG) 6 RS485 HI 5 24-16 AWG (0.2-1.5 mm2) or CATS (24 AWG) (Harness shield) (Earth/Shield) 4 24-16 AWG (0.2-1.5 mm2) or CATS (24 AWG) Powerwall 2 AC Installation Manual 72 APPENDIX E: INSTALLING A NEURIO ENERGY METER Meter Voltage Taps The voltage line harness provided in the meter kit is used to install the corresponding voltage taps in the electrical panel. Modify the harness by combining the blue and red leads. Figure 29. Voltage Line Harness with Combined Leads 0 Voltage Tap and Current Transformer Connections Voltage taps and current transformers must be connected so they are measuring the same phase. They must correspond according to the following table and diagram: Figure 30. Neurio W1 Voltage Tap Port (left) and Four CT Ports (right) on Bottom of Meter ABOO ® ® N C A B C A Figure 31. Neurio W2 Voltage Tap Port (left) and CT Ports (right) COMMS AC CTI CT2 CT3 CT4 Ciao° O ®® wu' uu uu bodo o■ o0 00 00 Phase Meter Voltage Tap Port Meter CT Port Solar Ll A 1/A Solar L2 B/C' 2/13 Solar L1 4/A Solar L2 3/C 'With combined leads in voltage line harness, ports B and C are equivalent (correspond to 1-2). Powerwall 2 AC Installation Manual 73 APPENDIX E: INSTALLING A NEURIO ENERGY METER Meter Placement and CT Wire Lengths Neurio CT Wire Lengths CT Lead CT Extension Kit Length Maximum Wire Extension Length Neurio W1 1.5 m (5 ft) CT 3 m (10 ft) 15 m (50 ft) using wire with the following properties: Tesla P/N: 1125547-03-x • Shielded, twisted pair with drain wire Total Length: 4.5 m (15 ft) • Wire gauge of 0.2-1.5 mm2 • Voltage rating equal to or greater than all other circuits in shared enclosures or raceways Neurio W2 1.2 m (4 ft) N/A CT 3.3 m (11 ft) Tesla P/N: 1622289-xx-y Total Length: 4.5 m (15 ft) If the distance between the meter and the CT is greater than 50 ft (15 m), the meter can be relocated, or a second meter can be used. When the meter is relocated into the main distribution board, use the antenna extension to place the antenna on the outside of the distribution board. G, NOTE: CT extensions cannot be combined unless the connection point between extensions remains accessible (for instance, inside a panel). Current Transformer Placement CT placement locations include the following: Site (Grid): A CT is placed between the utility meter and main switch to measure both load and generation. See Appendix F for information on implementing a Site Limit to curtail Powerwall charging from the grid. Solar: If the site includes solar equipment, a CT is placed after the solar inverter to measure the solar output. Load: Site and solar metering are preferred. However, in configurations where it is not possible to locate CTs between the utility meter and the main switch, load metering can substitute for site metering. Conductor: Where desired to curtail Powerwall discharge on a conductor, a dedicated Conductor Limit CT can be installed. This feature is optional for installations. See Appendix F:Feature Notes on page 82 for more information. See Appendix C on page 61 for system wiring diagrams depicting CT placement for various wiring configurations. Powerwall 2 AC Installation Manual 74 APPENDIX E: INSTALLING A NEURIO ENERGY METER Current Transformer Orientation CTs must be installed with the label on the CT housing pointing toward the power source, according to the following table and diagram. Always verify CTs are in the correct orientation by observing power flow in the Commissioning Wizard. Figure 32. Neurio W1 CT Orientation in Relation to Power Flow Figure 33. Neurio W2 CT Orientation in Relation to Power Flow CT Usage CT Orientation Site CTs CT label facing toward the service entrance/grid Solar CTs CT label facing toward the solar inverter Load CTs CT label facing away from the loads Current Transformer Capacity Standard Neurio CTs have a capacity of 200 A. If the wiring configuration allows, it is possible to pass multiple conductors of the same type through a single CT, provided the sum of the conductor's current ratings does not exceed the CT current handling capacity. This is especially useful for systems with multiple solar inverters. G, NOTE: Multiple conductors through a single CT is only possible if all conductors are on the same phase. Powerwall 2 AC Installation Manual 75 APPENDIX E: INSTALLING A NEURIO ENERGY METER Figure 34. Multiple Conductors Passing Through Single Neurio W1 CTs 8 L- E) E] 8 El 8 8 8 If a site has multiple solar inverters spaced far apart, or if a main panel has two main breakers (for example, 400 A service with two 200 A breakers), a Y-splitter cable (for Neurio W1 meters: Tesla P/N 1129625-00-x, for Neurio W2 meters: Tesla P/N 1622286-xx-y) can be used to connect two CTs on the same phase to a single meter port. Figure 35. Y-Cables Connecting Neurio W2 CTs on the Same Phase G' e e EU fll FU M e e e e Powerwall 2 AC Installation Manual 76 APPENDIX E: INSTALLING A NEURIO ENERGY METER For the Neurio Wl meter, 800 A CTs are also available for larger service sizes (Tesla P/N 1447689-00-x). The 800 A CTs can only be used with the Neurio W1 meter, and the 800 A CT option must be selected in the Commissioning Wizard drop down menu on the CT page. NOTE: When 200 A CTs are used in parallel, each input channel can measure up to 400 A. When 800 A CTs are used in parallel, each input channel can measure up to 1100 A. Metering Split-phase Solar with a Single CT Metering a split-phase solar inverter with one Current Transformer (CT) is supported with firmware version 1.37 and later. In this configuration, connecting a single CT to one of the two PV inverter output phases allows total power output to be calculated by software. The single CT must be installed on the phase that corresponds to the same CT port on the meter (phase A or B). It is possible to meter multiple split-phase solar inverters with one CT, if the solar inverter circuits are physically near each other: 1. Install both solar inverters with the same phasing 2. Group all conductors of the same phase together to pass through a single CT 3. As with a single inverter, it is important that the phase of this CT matches the phase of the voltage reference on the meter Installing the Meter Using the screws provided in the meter kit, attach the mounting plate to the inside of the main distribution board or to another surface. Choose a location that takes into account the voltage line harness and CT cable lengths. Wire the Voltage Taps 1. Plug the voltage line harness into the meter. 2. Connect the voltage line harness leads to a dedicated circuit breaker (not exceeding 16 A) of corresponding phase inside the distribution board: Voltage Harness Port/Wire Color Distribution Board Connection A / Black Ll breaker terminal B/ Red L2 breaker terminal C/ Blue Spliced with the Red B wire N / White Neutral busbar NOTE: If a dedicated circuit breaker is not available, the voltage line harness can be spliced to existing breakers. Powerwall 2 AC Installation Manual 77 TAPPENDIX E: INSTALLING A NEURIO ENERGY METER Figure 36. Voltage Line Harness Wired to Dedicated Breakers (Left) or Spliced to Existing Breakers (Right) '0 ® IE Ej Em lu� a RE e a C fl] e 91 ,e [am ME] e 8 e, 0 lu Powerwall 2 AC Installation Manual 78 APPENDIX E: INSTALLING A NEURIO ENERGY METER Install the Antenna To install the antenna, screw it onto the meter. It is recommended to locate the antenna outside the enclosure using the included antenna extension: • Locate a 1/2" or 3/4" knockout and install a cable gland. • Mount the antenna by threading the extension cable through the included knockout mount and securing the mount. • Screw the antenna onto the extension cable and connect the extension cable to the meter. Figure 37. Antenna Port O Locate the CTs • Place a CT on the corresponding power wire in the main distribution board after the utility meter and ahead of any loads. Be sure to orient the CTs with the "source this side" text facing the utility source. • Connect the CTs to the ports on the remote energy meter. Ensure the CTs are connected to the correct CT ports on the meter. Figure 38. Neurio W1 CT Ports (right) on Bottom of Meter ABGO ® G A B C A Powerwall 2 AC Installation Manual 79 APPENDIX E: INSTALLING A NEURIO ENERGY METER Figure 39. Neurio W2 Meter CT Ports CT1 CT2 CT3 CT4 A B C A Powerwall 2 AC Installation Manual 80 APPENDIX E: INSTALLING A NEURIO ENERGY METER Neurio Meter Installation Troubleshooting When powered on, the Neurio W2 will play the following tones to indicate its status in sequential order. Tone Indication Description Short Beeps Voltage check One beep for each voltage wire that is connected. For a 3-phase installation there should be three beeps to indicate that the brown, black, and gray wires are connected. Short Chime Neurio Wi-Fi netork Neurio has started housing its own Wi-Fi network. You can join this started network to configure Neurio and connect it to your own Wi-Fi network. Long beep Voltage warning Indicates that two wires are connected to the same phase. (conditional) Long Chimes Neurio joined network Neurio successfully joined your Wi-Fi network. successfully Failing tone Neurio failed to join Neurio was unable to join your Wi-Fi network. Neurio will now start network hosting its own Wi-Fi network again to allow you to re-connect to JNeurio and re-enter the Wi-Fi credentials. The LED on the meter housing will also indicate the current state of the meter. Figure 40. Neurio W2 Meter LED Location State LED Behavior Powered Solid Red Wi-Fi Connected Solid Blue Normal Operation "Breathing" Blue Wi-Fi Network Lost Slow Flashing Blue (2s/2s) Attempting to join Wi-Fi Network Fast Flashing Blue (0.5s/0.5s) Configuration Network Up (Ready to Pair) Solid Green Configuration Data Transfer (Pairing in Process) Blinking Purple Firmware Update in Progress Solid Yellow Powerwall 2 AC Installation Manual 81 T APPENDIX F: FEATURE NOTES Configuring Site Limits The Backup Gateway can be configured to limit Powerwall charge power from the grid. When Site Limits are programmed by the installer during commissioning, the Powerwall charge power is dynamically adjusted based on the net measured site power and the programmed site limit threshold. Site Limits are configured in the Commissioning Wizard; select Site Import Limit from the Settings page. At the conclusion of the commissioning process, a summary of the settings will be displayed. The net site power measurement can be a virtual aggregated meter; therefore, abide by all prior guidance on meters and CTs. Configuring Conductor Export Limits Overview The Powerwall system can be configured to limit Powerwall discharge power. When Conductor Export Limits are programmed, the Powerwall discharge power is dynamically adjusted based on the amperage measured by designated current transformers (CTs) and the programmed Conductor Limit amperage threshold. Set Conductor Export Limits Install CTs • Conductor CTs must be installed on conductors that are: • Between the grid connection and the Powerwalls. o At a location where the Powerwalls have control over current. • CTs should be oriented such that the label faces toward the grid. Complete Commissioning 1. In the Commissioning Wizard, assign the correct CTs to Conductor. G, NOTE: CTs can only be assigned one designation, meaning a CT cannot be both a Site and a Conductor CT. 2. Enter the amperage for the Conductor Limit on the Settings page. At the conclusion of the commissioning process, a summary of the settings will be displayed. Powerwall 2 AC Installation Manual 82 APPENDIX F: FEATURE NOTES Load Shedding Overview The Backup Gateway allows for load shedding, meaning a low voltage control circuit can be wired to control a specific load. For instance, an air conditioning load controlled by a thermostat can be wired to the low voltage control circuit in the Backup Gateway so that the load can be shed when Powerwall is off-grid. When commissioned for load shedding and the Powerwall system is on-grid, the low voltage control circuit is closed and the load is powered. When commissioned for load shedding and the system is operating off- grid, the low voltage control circuit is open and the load is OFF. When the system is wired for load shedding, the controlled load breaker can remain on the backup loads panel. Gateway Air Handler Unit ° Thermostat 0 a »� El 0 a o 0 ® 4°4 24 V Control Circuit 00 00 ® eaovvss a Wire Splice .a p Condensor G, NOTE: Refer to Appendix B: Wiring Reference on page 56 for wiring specifications G, NOTE: The load shedding feature is not applicable to permanently off-grid Powerwall systems. Permanently off-grid systems use the Backup Gateway Aux terminals for generator control rather than for load shedding. G, NOTE: To activate this feature in the Commissioning Wizard, make the appropriate selection to the "Gateway Low Voltage Relay" within the Installation page. This feature can be activated in firmware version 1.47 or later. Powerwall 2 AC Installation Manual 83 APPENDIX F: FEATURE NOTES G` NOTE: See the Load Shedding with the Backup Gateway application note for an example installation which uses the load shedding feature to control a condenser for a central air conditioning system. U5` NOTE: The low voltage control circuit will be opened briefly during firmware updates and under abnormal fault conditions. r-!° NOTE: The load shed relay is rated up to 60 V (DC or AC) and 2 A. Powerwall 2 AC Installation Manual 84 T APPENDIX G: INSTALLATION TROUBLESHOOTING Accessing the Powerwall User Interface Use Chrome: Incognito mode or Safari: Private Browsing mode. Work in one browser tab only. For security message Your connection is not private. select Advanced and Proceed to 192.168.xx.x (unsafe). For Error: Bad Credentials, select FORGOT PASSWORD to reset password. For Error.•Login Error(Cannot Start Wizard), select Click for More and tick the Force Launch Wizard option. Try again. If experiencing other issues in the Commissioning Wizard, refresh the web page. If issues persist, reboot Gateway using RESET button. If issues still persist after rebooting the Gateway, reset the Backup Switch using the RESET button. Updating Firmware CHECK INTERNET CONNECTION to verify Gateway network connection. Check for Update to verify you are on the latest firmware. Factory firmware ending in GF must be updated. Never power down or modify wiring during an update. During the update, the Gateway will reboot which will cause the "TEG-xxx" Wi-Fi to disconnect. When reconnected, refresh the web page. Configuring Energy Meters Conduct all CT tests with at least 1 kW of power flowing. Ensure all solar inverters are monitored with CTs. When using only 1 CT for solar, select Solar (1CT x2) on the Current Transformers screen in the Commissioning Wizard. For each CT, select the applicable function on the Current Transformers screen and perform the following steps to ensure it is in the correct location and orientation: • Adjust the Amps/kW slider to see what the CTs are reading. • Verify the on-screen values for the CT against the applicable meter (such as the solar inverter meter or utility meter). • Ensure that: • Site CTs are positive for import, negative for export. o Solar CTs are positive when the PV array is producing power (Solar is NEVER negative during daytime). Powerwall 2 AC Installation Manual 85 APPENDIX G: INSTALLATION TROUBLESHOOTING Negative power flow may indicate CT is installed on the wrong phase! • If the "toward source" CT label is correctly facing the solar inverter but power flow is negative, a voltage-current mismatch is likely. • Physically move the CT to the correct phase with the label facing the correct direction. Do not use the Flip checkbox in this case. Solar CTs should only meter generation sources. It is never recommended to meter both generation and loads using the Solar (1 CT x2) option. If it is absolutely necessary to install solar and a small amount of loads together without independent metering, you must install the solar CT on the phase without any downstream loads. Use a handheld clamp or fork meter to verify CT readings. Reset the Backup Gateway If experiencing issues with the Backup Gateway, reboot the Gateway using the RESET button (1 below). Power Cycle the System If resetting the Backup Gateway does not resolve issues, power cycle the system as follows. To power the system off : 1. Turn off solar equipment. 2. Turn off all Powerwalls. 3. Open breakers feeding Powerwall and solar. 4. Open breaker feeding Gateway. S. Disconnect communication wiring. Reverse steps to power the system on. Powerwall 2 AC Installation Manual 86 T APPENDIX H: MULTI-POWERWALL INSTALLATIONS Electrical Equipment Sizing and Overcurrent Protection Overview This section describes the requirements for installation of multiple Powerwall units with a Backup Gateway in North America. Pre-Requisites for Design Before designing a Powerwall system with more than four Powerwall units: • AC line impedance must be measured at the installation site to ensure the utility grid connection is able to support the desired quantity of Powerwalls. If the required grid impedance is too high, the Powerwalls may not connect to the grid, resulting in undesirable operation. See Table 1 in this app note for required minimum impedance values. • Minimize Impedance: • Install the Powerwalls as close as possible to the point of interconnection with the grid. The recommended maximum wire length is 33 ft (10 m). • Install wires larger than required by code between the Powerwall generation panel and the point of interconnection with the grid. Example, if the design requires 3/0 AWG wire, use 4/0 AWG wire. • Tesla Certified Installers should submit their multiple Powerwall system designs and measured impedance values to Tesla for review by sending design documents to powerwalldesignreview@tesla.com. Copy your Tesla account manager on all submissions. • Designers must properly size overcurrent protection and loads to account for the full power potential of multiple Powerwalls. For example, a 10-Powerwall system is capable of discharging up to 50 kW of power. See design examples in Panel Configuration and Breaker Sizing. • Multi-Powerwall installations may require larger Powerwall communication wire between the Backup Gateway and the Powerwall units. Please refer to the Powerwall 2 AC/ Gateway Communication Wiring application note on communication cable requirements, as your install may require up to #16 AWG or 1.3 mm2 wire. • For systems between 11 to 20 Powerwalls, multiple Backup Gateways are required, as each Gateway can only control up to 10 Powerwall units. Please refer to the Multiple Gateways on a Single Site application note on the Partner Portal. • Grid impedance does not need to be measured for off-grid systems as there is no grid impedance to measure. Powerwall 2 AC Insta+!ation. Manual 87 APPENDIX H: MULTI-POWERWALL INSTALLATIONS Pre-Requisites for Installation Before installing and commissioning a multi-Powerwall system: • Plan for the commissioning process to take longer than a typical installation. It can take up to 3 minutes to complete the commissioning scan and verify process for each Powerwall, so a 10-Powerwall system can take up to 45 minutes during this stage of commissioning. 17_111, NOTE. Do not interrupt a commissioning step, turn off the system, or unplug the communication wiring at any time during the commissioning process. _j Service Type and Capacity Requirements The Backup Gateway supports systems of up to 10 Powerwall units, but the maximum number of Powerwalls may be limited by the site electrical service, utility grid infrastructure, or local requirements; therefore an impedance test is required to confirm. Line Impedance Requirements The sensitivity of the system to line impedance increases with the number of Powerwalls in the system. (See Impedance Requirements for Multi-Powerwall Systems on page 90for the maximum allowable impedance as it relates to number of Powerwalls.) If grid impedance at a site exceeds the maximum allowable value, do either of the following: • Decrease the impedance of the site grid connection. This may require coordinating with the local electrical utility. See "Minimize Impedance" in the Pre-Requisites for Design for suggestions. • Reduce the quantity of Powerwalls installed at the site to meet the maximum allowable impedance value. If impedance values exceed the requirement for the installed number of Powerwalls, the system may not function properly. Measuring Line Impedance To determine the line impedance at a site, measure between Line and Neutral where the Powerwalls will be interconnected to the site electrical system with testing equipment such as the following: • Fluke 1660 Series Installation Tester (1662, 1663, or 1664) • Metrel-M13000 Multifunction Tester • Megger LTW315 Loop Impedance Tester Powerwall 2 AC Installation Manual 88 APPENDIX H: MULTI-POWERWALL INSTALLATIONS Example Line Impedance Test Instructions For details on line impedance testing, refer to the test equipment manufacturer's instructions. The steps below are general guidelines only. AWARNING: Impedance tests must be performed on an energized electrical system. Impedance tests should be carried out only by trained electricians using appropriate safety equipment and safety practices. 1. Follow manufacturer instructions to calibrate and zero the impedance tester before taking measurements. 2. Complete the test on L1 first, then move to L2. 3. Connect all three voltage test leads - Line, Neutral, and Ground 4. Follow manufacturer instructions to verify that the correct voltage is present. Switch the tester to a voltage measurement mode and check Line-to-Neutral and Line-to-Ground voltages. 5. Follow manufacturer instructions and take an impedance measurement where the Powerwalls will be interconnected to the site electrical system. Switch the tester to the appropriate impedance measurement mode and take the following readings: • Line-Neutral a Line-Ground G` NOTE: The Line-Neutral impedance measurement is the value referenced in Impedance Requirements for Multi-Powerwall Systems on page 90. 6. Record the impedance measurements. 7. Repeat steps 3-6 for L2. Recommended Interconnection Point for Large Multiple Powerwall Systems 1 Service Entrance 2 Meter 3 Main Panel � I G` NOTE: Impedance should always be measured at the point of Powerwall interconnection. Powerwall 2 AC Installation Manual 89 APPENDIX H: MULTI-POWERWALL INSTALLATIONS Table 10. Impedance Requirements for Multi-Powerwall Systems # of Powerwalls per site Maximum Grid Impedance, Line - Neutral 1 0.80 Ohms 2 0.40 Ohms 3 0.27 Ohms 4 0.20 Ohms 5 0.16 Ohms 6 0.13 Ohms 7 0.11 Ohms 8 0.10 Ohms 9 0.09 Ohms 10 * 0.08 Ohms 11 to 12 ** 0.07 Ohms 13 to 14 ** 0.06 Ohms 15 to 17 ** 0.05 Ohms 18 to 20 ** 0.04 Ohms *Maximum number of Powerwalls supported for a single Gateway **11 to 20 Powerwalls require multiple Gateways Powerwall 2 AC Installation Manual 90 APPENDIX H: MULTI-POWERWALL INSTALLATIONS Panel Configuration and Breaker Sizing The Backup Gateway has a maximum continuous current rating of 200 A. In systems with 7 or more Powerwall units, to ensure sufficient ampacity while keeping total charge/discharge current within the 200 A capacity of the Backup Gateway, a separate generation panel (400 A minimum) with a 200 A main breaker is recommended. The example below shows the following: • 400 A main panel with a 200 A main breaker in the panel or in the Backup Gateway • 400 A generation panel with 200 A main breaker • Load panel w/200 A main breaker Example 400 A Service with Separate Generation and Load Panels 1 400 A Service I0L 2 200 A Breaker in Backup Gateway 3 200 A Breaker (max) in 200 A Panel 4 Loads © 5 200 A Breaker (max) in 400 A Panel 6 Solar 7 7 or more Powerwalls ® ® © O Powerwall 2 AC Installation Manual 91 APPENDIX H: MULTI-POWERWALL INSTALLATIONS When wiring the load panel, ensure that combined loads do not exceed main breaker continuous or peak current ratings, whether the system is on-grid or off-grid. When the grid is operational, power can flow from both the grid and the generation panel to the load panel. Power Flow from Grid and Generation Panel when On-Grid 1 400 A Service 0 2 200 A Breaker in Backup Gateway 3 200 A Breaker (max) in 200 A Panel 0 4 Loads © 5 200 A Breaker (max) in 400 A Panel 6 Solar 7 7 or more Powerwalls �k 0 � = © © 0 0 Powerwall 2 AC Installation Manual 92 APPENDIX H: MULTI-POWERWALL INSTALLATIONS When there is a grid outage, power can flow from the generation panel to the load panel. Power Flow from Grid and Generation Panel when On-Grid 1 400 A Service 0 2 200 A Breaker in Backup Gateway 3 200 A Breaker (max) in 200 A Panel 0 � 4 Loads © 5 200 A Breaker (max) in 400 A Panel 6 Solar 7 7 or more Powerwalls O ® ® 0 I O Powerwall 2 AC Installation Manual 93 APPENDIX H: MULTI-POWERWALL INSTALLATIONS Multi-Powerwall Installations with the Stack Kit In the Powerwall Stack Kit Powerwall Stack Kit: Tesla P/N 1112154-00-x 0 © 4 - - 0 0 100 m� 1. (2) Side clips 2. (1) Top cover 3. (1) Conduit nipple 4. (2) Conduit insulation bushings S. (2) Conduit sealing 0-rings 6. (1) Bridge piece 7. (1) 6 mm Allen wrench 8. (1) Drill guide (two pieces) 9. (1) 5-conductor communication cable 10. (1) Wiring interface cover 11. (4) Magnetic camshaft caps Required Tools • Personal protective equipment (safety glasses, gloves, protective footwear) Powerwall 2 AC Installation Manual 94 APPENDIX H: MULTI-POWERWALL INSTALLATIONS • Drill and 6 mm (1/4-inch) drill bit (for drilling pilot hole in Powerwall chassis) • 35 mm (1-3/8 inch) hole saw (for drilling conduit hole in Powerwall chassis) • Small metal file (for removing burrs from Powerwall chassis sheet metal) • Rubber mallet or small hammer and wood block (for seating side clips in Powerwall) • Wire strippers/cutters for 1.5 to 8 mm2 (24 to 8 AWG) wires • Large (5 mm) flathead driver bit (for Powerwall Earth terminal) • Small grease applicator (wooden craft stick or cotton swab) • Water-resistant heavy-duty grease (Dow Corning Molykote BR-2 Plus High Performance Grease or equivalent, for preventing corrosion on side clips) • Installation tools (level, tape measure, pencil, flashlight) Site Requirements Stacked multi-Powerwall systems must be floor-mounted and must be anchored to an adjacent wall. The wall must be capable of supporting the lateral load of the Powerwall stack. A maximum number of 3 floor-mounted Powerwall units may be joined together with two Powerwall Stack Kits. For systems with more than 3 Powerwalls, separate groups of 3 units should be assembled, with each group of 3 attached to a wall. For complete Powerwall Mechanical Specifications and Site Requirements, see Site Requirements and Pre- Installation Guidance on page 10. Figure 41. Dimensions for 2-unit and 3-unit Powerwall Stacks 312 mm 476 mm 753 mm(29.6 in) (12.3 in) (18.7 in) O O 439 mm (17.3 in) 000 0000 O1150 mm ❑ (45.3 in) Li 000 0000 248 mm (9.75 in) O O Powerwall 2 AC Installation Manual 95 APPENDIX H: MULTI-POWERWALL INSTALLATIONS Installation Instructions These instructions assume that at least one Powerwall has been installed and additional Powerwall units are being installed using the Powerwall 2 Stack Kit (Tesla P/N 1112154-00-x). See Plan the Installation Site on page 20 for complete installation instructions. Step 1:Prepare for Installation 1. Turn off the first (previously installed) Powerwall by setting its On/Off switch to the OFF position. i i o 2. Turn off the AC circuit breaker for the Powerwall. 3. Ensure that the second Powerwall is turned off by verifying that its On/Off switch is set to the OFF position. 4. Remove both side covers from each Powerwall to be joined. NOTE: On the first (previously installed) Powerwall, it may be necessary to remove the small plastic insert at the bottom of the covers to help with removal. For the right (LED) side covers, do not disconnect the switch and LED leads. Turn the cover to one side and rest it against the Powerwall chassis. Powerwall 2 AC Installation Manual 96 APPENDIX H: MULTI-POWERWALL INSTALLATIONS .: r. T'SLR i i !lDlq S. Using a T20 Torx bit, remove the wiring compartment covers from the previously installed Powerwall. o [J L BY s o Step 2: Choose a Wiring Option In multi-Powerwall systems, communication wiring is daisy-chained between Powerwall units. Power wiring is direct (home run) from each Powerwall to a dedicated circuit breaker in the electrical panel. Wiring between Powerwalls can be concealed, or run externally. Powerwall 2 AC Installation Manual 97 APPENDIX H: MULTI-POWERWALL INSTALLATIONS Concealed Wiring For concealed wiring, a hole is drilled from the front of the first Powerwall into its wiring compartment and wires are run directly into it from the back port of the second Powerwall. To use this wiring method, proceed to Step 3, "Prepare for Concealed Wiring." External Wiring For external wiring, wires are run through conduit or raceway that spans the wiring compartment ports on the side of each Powerwall. To use this wiring method, skip to Step 4, "Join the Powerwall Units." Step 3:Prepare for Concealed Wiring 1. Disconnect all wiring from the wiring compartment of the first Powerwall. 2. Locate the wiring interface cover and peel back the film to expose the adhesive on the cover gasket. With the gasket facing inward, place the cover over the interface board at the back of the wiring compartment. The cover is intended to protect the circuit board and its components from metal shavings while drilling into the wiring compartment. 0 o „ 3. Attach the included drill guide to the front of the first Powerwall by bracing the inside half of the guide against the bottom of its wiring compartment. ' o I 0 i p o Powerwall 2 AC Installation Manual 98 APPENDIX H: MULTI-POWERWALL INSTALLATIONS 4. Clip the outside half of the drill guide to the inside half so that the guide engages the hem of the Powerwall enclosure. UO 5. While holding the drill guide to make sure it conforms to the edge of the Powerwall chassis, drill a 6 mm (1/4-inch) pilot hole using the small hole in the drill guide. J 4 Q 6. Remove the drill guide. 7. Drill the full-size 35 mm (1-3/8 in) hole with a hole saw, using the pilot hole as a guide. if All Ili nl I ........................... _ 8. File the edges of the hole to remove any burrs. 9. Clear the wiring compartment of all metal shavings and debris. 10. Remove the protective cover from the wiring compartment. Powerwall 2 AC Installation Manual 99 APPENDIX H: MULTI-POWERWALL INSTALLATIONS 11. If the first Powerwall still has its protective film, remove the film. 12. Peel back the protective film from the feet of the second Powerwall before moving it into place. 13. Remove the plug from the back cable entry port of the second Powerwall and place it in the side cable entry port of the same Powerwall. 1 � � Ie Step 4:Join the Powerwall Units 1. Orient the second Powerwall about 2 cm (1 in) in front of the first, with its back cable entry port facing the hole you drilled in the front of the first Powerwall. 2. (Concealed wiring installations only) Do the following to bridge the gap between the Powerwall wiring compartments: • Locate the bridge piece, conduit nipple, two O-rings, and two insulation bushings. O 0 " (L 0 0 • Assemble the conduit nipple, bridge piece and O-rings. Center the bridge and O-rings on the nipple. G, NOTE: Orient the O-rings so that the sides with greater surface area (marked "Box Side") point to the outside, toward the Powerwall chassis. o Install the assembly between the two Powerwalls so it spans the two wiring compartments. O c O Powerwall 2 AC Installation Manual 100 APPENDIX H: MULTI-POWERWALL INSTALLATIONS o Thread an insulation bushing onto each end of the conduit nipple, but do not fully tighten the bushings. �I o 3. (All installations) Locate a side clip, making sure the flange (with magnet) is positioned at the top and that the cams are rotated vertically in relation to the clip. o ; 0 Powerwall 2 AC Installation Manual 101 APPENDIX H: MULTI-POWERWALL INSTALLATIONS 4. Slide the side clip into the gap between the two Powerwalls so that its flanges engage the side hem of each enclosure. yi L-i i G' NOTE: The Powerwall enclosure hems have cutouts that mate with tabs in the clip. i 0 t !n 5. Press the clip until it is flush with the sides of the Powerwalls. 6. Using the provided 6 mm Allen hex wrench, do the following: o Turn the top cam 90 degrees clockwise until it clicks into place and stops rotating. Powerwall 2 AC Installation Manual 102 APPENDIX H: MULTI-POWERWALL INSTALLATIONS -- LJ o Turn the bottom cam toward the wall (toward the first Powerwall) so that the cam indicator notch on the hex camshaft head points toward the wall, until the cam clicks into place. G' NOTE: The top cam is symmetrical and can be rotated in either direction to secure the side clip. The bottom cam must be rotated toward the first Powerwall so that its stepped side (indicated by the notch on the hex camshaft head) engages the housing of one of the Powerwalls. 7. Repeat steps 3-6 to install a side clip on the other side of the Powerwalls. G' NOTE: If necessary, use a small rubber mallet or a hammer and wood block to gently tap the side clips so that they are fully seated in the hem of the Powerwall. Powerwall 2 AC Installation Manual 103 APPENDIX H: MULTI-POWERWALL INSTALLATIONS 8. Position the top cover across the gap between the Powerwalls so that its flanges engage the tops of each side clip. The cover is held in place by the magnets on the tops of the side clips. �J E a��fl I L 9. (Concealed wiring installations only) Tighten the insulation bushing on each side of the conduit nipple to secure the bridge between the two Powerwall wiring compartments. Powerwall 2 AC Installation Manual 104 APPENDIX H: MULTI-POWERWALL INSTALLATIONS 10. Use the provided shims to ensure that the Powerwalls are level. G, NOTE: When joined, the units should be level within +/- 2 degrees side-to-side and within +/- 5 degrees front-to-back. Step 5: Wire the Powerwall Units 1. Connect the communication ports of the two Powerwalls by doing the following: o Run the provided 5-conductor communication harness between the Powerwall wiring compartments. At the first Powerwall, cut back the drain wire; the drain wire should be terminated only at the second Powerwall. G' NOTE: The orange conductor is unused in Powerwall 2 AC installations. o Attach the provided Phoenix connector to one end of the harness, and attach the extra Phoenix connector that came with the Powerwall to the other end of the harness. See Appendix B: Wiring Reference on page 56 for additional wiring information. Powerwall 2 AC Installation Manual 105 APPENDIX H: MULTI-POWERWALL INSTALLATIONS ■ Connect the communication OUT connector of the first Powerwall to the communication IN connector of the second Powerwall. ■ To ground the drain wire: ■ Strip the end of the equipment grounding conductor lead and wrap the communication drain wire around the grounding conductor lead. • Insert the drain wire and grounding conductor lead into the second Powerwall chassis ground lug. The ground lug is identified with the following symbol: O ■ Tighten the screw in the ground lug to 4.5 Nm (40 Ib-in). G' NOTE: There will be a drain wire grounded in each Powerwall in the chain. For each pair of components (Gateway and first Powerwall, first Powerwall and second Powerwall, etc.), the drain wire is cut at the first component and grounded at the second. Figure 42. Connecting Powerwall Communication Ports ....0„*MEN u u "• AN `n �® 00 0 OCD CD 12v+ GND 1 1 CN�V CN± 1 I ________Drain wire --------------------------I F—Equipment Ground o In the last Powerwall in the communication chain, plug the 4-pin Phoenix connector with the terminating 120-Ohm resistor into the top 4-pin socket (labeled "OUT"). 2. Connect each AC Powerwall to the main or sub electrical panel of the installation (depending on the system configuration) according to the electrical service type. 3. On the Powerwall side, strip the ends of the wires and attach them to the corresponding leads on the 3-pin AC power harness. Powerwall 2 AC Installation Manual 106 APPENDIX H: MULTI-POWERWALL INSTALLATIONS 4. Plug the AC power harness into the AC connector in the Powerwall wiring compartment. Ensure that the connector clicks into place. G' NOTE: Each Powerwall connection to the main electrical panel requires an independent 30 A circuit breaker. This breaker serves as the disconnect for the Powerwall, and must be wired in accordance with local wiring codes and regulations. 5. Reconnect the power and communications leads that were disconnected from the first Powerwall at the beginning of the installation. Step 6: Close the Wiring Compartments and Replace the Covers 1. Arrange the communication and AC power wires inside the Powerwall wiring compartments. 2. Ensure that all conduit junctions and cable entry points are secure and properly sealed. 3. Replace the wiring compartment cover on each Powerwall. Ensure that the cover seats properly on the gasket so that the compartment is sealed. Tighten the fasteners using a Torx T20 bit. Torque to 1.5 Nm. 4. Replace each of the side covers on the Powerwalls by pushing the top into place and working toward the bottom to reattach it to the clips along the length of the unit. 5. (Optional) In humid or rainy climates, or in locations where the installation may be exposed to salt, fog, or other corrosive elements use a small applicator (such as a wooden craft stick or cotton swab) to apply a generous bead of heavy duty water-resistant grease around the outside edge of each camshaft head where it contacts the side clip. Powerwall 2 AC Installation Manual 107 APPENDIX H: MULTI-POWERWALL INSTALLATIONS 6. Place a magnetic camshaft cap on each of the four hex camshaft heads I I i pltltgtloll�n�+�;'�I I I f t �oo il � O � Ik i tlik�t, I Ill l�ro t IGs.ol tl'ti , flIll�€��tjlCi}l�. i� z I !I it li E r i l ii�l+lp II€t�r�l��lll�t!!if I' ;i�lF{Fktlll�Idi�k;k� lilEl�tuit (I(Ilil�li 111 IIf Iil`'I'II�EIk llllt�iilll�l�ili�h O Step 7.• Turn On and Commission the System 1. Switch on the AC circuit breakers for the Gateway and each Powerwall. 2. Switch on each Powerwall by moving the switch on the right (LED) side of the unit to the ON position. When each Powerwall establishes communication with the Gateway, the LED on the right side of Powerwall illuminates. 3. See Commission the System on page for instructions on updating system firmware and commissioning the system. G, NOTE: During commissioning, ensure that when scanning for Powerwalls, the Commissioning Wizard shows all Powerwalls in the system. 4. After installation is complete, remove the protective film from the second Powerwall. Powerwall 2 AC Installation Manual 108 T APPENDIX I: REVISION LOG Revision Date Description 1.0 2020-05-23 Initial release 1.1 2020-06-26 . Added Powerwall and Backup Gateway 2 specifications • Updated multi-Powerwall communication wiring instructions for clarity 1.2 2020-08-10 . Noted breaker requirement when wiring Optional Internal Panelboard to Non-Backup lugs (see Install Optional Internal Panelboard in the Backup Gateway on page 32) • Added Optional Internal Panelboard terminal wire gauges to Wire Reference 1.3 2020-09-30 Corrected stack kit dimensions 1.4 2020-12-15 . Added warning to allow the Backup Gateway a full minute to complete its boot sequence before power cycling or resetting it (Close the Wiring Compartments and Turn the System On on page 45) • Added minimum clearance above Backup Gateway • Updated to include Powerwall part number 3012170-xx-y • Added note on maximum input channel current that can be measured by each CT when two CTs are used in parallel (Current Transformer Capacity on page 75) 1.5 2021-06-23 . Updated Installing a Neurio Energy Meter appendix to include the Neurio W2 meter and accessories • Updated Mounting Bracket Anchoring Details on page 52 to include brick, updated concrete and masonry section 1.6 2021-06-27 • Added information about the Panel Limit Feature on page 37 Powerwall 2 AC Installation Manual 109 T = SLn Published June 2021 Revision 1.6 ONV• GL yrii %a2tri t- 7 Tes a'.£ ,: a r i .�,: ., o I Powerwal 'i's Tesla, Inc. DNV GL Doc. No.: 10075610-HOU-R-01-D Issue: D; Status: Release Issue Date: 4 March 2019 ,. ,,,. :-: iiufII11VIWIM1I111�MM�1� .? ,.. i IMPORTANT NOTICE AND DISCLAIMER 1. This document is intended for the sole use of the Customer as detailed on the front page of this document to whom the document is addressed and who has entered into a written agreement with the DNV GL entity issuing this document("DNV GL").To the extent permitted by law, neither DNV GL nor any group company (the "Group") assumes any responsibility whether in contract, tort including without limitation negligence, or otherwise howsoever, to third parties (being persons other than the Customer), and no company in the Group other than DNV GL shall be liable for any loss or damage whatsoever suffered by virtue of any act, omission or default (whether arising by negligence or otherwise) by DNV GL, the Group or any of its or their servants, subcontractors or agents. This document must be read in its entirety and is subject to any assumptions and qualifications expressed therein as well as in any other relevant communications in connection with it. This document may contain detailed technical data which is intended for use only by persons possessing requisite expertise in its subject matter. 2. This document is protected by copyright and may only be reproduced and circulated in accordance with the Document Classification and associated conditions stipulated or referred to in this document and/or in DNV GL's written agreement with the Customer. No part of this document may be disclosed in any public offering memorandum, prospectus or stock exchange listing, circular or announcement without the express and prior written consent of DNV GL. A Document Classification permitting the Customer to redistribute this document shall not thereby imply that DNV GL has any liability to any recipient other than the Customer. 3. This document has been produced from information relating to dates and periods referred to in this document. This document does not imply that any information is not subject to change. Except and to the extent that checking or verification of information or data is expressly agreed within the written scope of its services, DNV GL shall not be responsible in any way in connection with erroneous information or data provided to it by the Customer or any third party, or for the effects of any such erroneous information or data whether or not contained or referred to in this document. 4. Any energy forecasts, estimates, or predictions are subject to factors not all of which are within the scope of the probability and uncertainties contained or referred to in this document and nothing in this document guarantees any particular energy output, including factors such as wind speed or irradiance. KEY TO DOCUMENT CLASSIFICATION For disclosure only to named individuals within the Strictly Confidential Customer's organization. For disclosure only to individuals directly concerned with the Private and Confidential subject matter of the document within the Customer's organization. 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DNV GL— Document No.: 10075610-HOU-R-01-D, Issue: D, Status: Release Page iii www.dnvgl.com DNV GL - Energy Report title: Live Fire Test of Tesla Powerwalls KEMA-Powertest, LLC Customer: Tesla Inc 5777 Frantz Rd Customer Address Dublin, OH 43017 Contact person: Jan Gromadzki Tel: +1-614-761-1214 Date of issue: 4 March 2019 Project No.: 10075610 Proposal Reference: Document No.: 10075610-HOU-R-01-D Issue/Status D/Release Task and objective: This report presents the results of testing performed by DNV GL and Rescue Methods on Tesla Powerwalls against a number of common residential building materials Prepared by: Verified by: Approved by: Nick Warner Victoria Carey Jamie Daggett Senior Test Engineer Consultant, Energy Storage Senior Engineer ......... ❑ Strictly Confidential Keywords: ❑ Private and Confidential Fire test, battery, energy ❑ Commercial in Confidence ❑ DNV GL only ® Customer's Discretion ❑ Published ...........-.................................................. ....................................................................................................................................................................................................._................._......................._.............................................. ©2018 KEMA-Powertest,LLC All rights reserved. Reference to part of this report which may lead to misinterpretation is not permissible. A 15 June 2018 Draft N. Warner V.Carey B 28 October 2018 Draft N.Warner V.Carey C 29 October 2018 Release N. Warner V.Carey J.Daggett D 4 March 2019 Release N. Warner V.Carey 1.Daggett DNV GL— Document No.: 10075610-HOU-R-01-D, Issue: D, Status: Release Page iv www.dnvgl.com a Tabic of contents EXECUTIVESUMMARY....................................................................................................................VIII 1 INTRODUCTION ............................................................................................................................. 1 2 TEST SETUP ...............................................................................................................I..........I....... 1 2.1 Data Acquisition and Video........................................................................................................... 3 2.2 Gas analysis ............................................................................................................................... 3 2.3 Wall sections .............................................................................................................................. 4 2.4 Thermocouple and heat flux gauge placement................................................................................. 6 2.5 Ignition methods......................................................................................................................... 6 3 TEST RESULTS AND DATA............................................................................................................... 7 3.1 Test 1: Brick surface.................................................................................................................... 7 3.2 Test 2: Concrete surface .............................................................................................................. 9 3.3 Test 3: Hardie board surface........................................................................................................13 3.4 Test 4: CMU block surface...........................................................................................................15 3.5 Test 5: Stucco surface with 5/8"Gypsum board soffit.....................................................................18 3.6 Test 6: Vinyl siding surface..........................................................................................................20 3.7 Gas Data...................................................................................................................................24 4 OBSERVATIONS AND DISCUSSION .................................................................................................28 4.1 Effectiveness of hardie board in protecting against fire spread .........................................................29 4.2 Discussion of gas data ................................................................................................................29 5 CONCLUSION ...............................................................................................................................30 Figures Figure 2-1 Edge to edge spacing between units in test 1............................................................... 2 Figure 2-2 Camera and thermal measurement device placement ................................................... 3 Figure 2-3 Tesla interior wall specs ............................................................................................ 5 Figure 2-4 Tesla roof and soffit specs......................................................................................... 5 Figure 3-1 Temperatures around the device under test during Test 1 ............................................. 7 Figure 3-2 Mast temperatures during Test 1................................................................................ 8 Figure 3-3 Peak flame output from device under test during Test 1................................................ 9 Figure 3-4 Wall temperatures during Test 2 ...............................................................................10 Figure 3-5 Mast temperatures during Test 2...............................................................................11 Figure 3-6 Adjacent Powerwall temperatures during Test 2 ..........................................................11 Figure 3-7 Peak flame exposure over wall during Test 2 ..............................................................12 DNV GL— Document No.: 10075610-HOU-R-01-D, Issue: D, Status: Release Page v www.dnvgl.com Figure 3-8 Peak flame production during Test 2..........................................................................12 Figure 3-9 Wall temperature during Test 3.................................................................................13 Figure 3-10 Mast temperatures during Test 3.............................................................................14 Figure 3-11 Adjacent Powerwall temperatures during Test 3 ........................................................14 Figure 3-12 Soffit and roof condition approximately one minute before final extinguishing. Note no apparent heat damage.....................................................................................15 Figure 3-13: Hardie board test after fire peak, the hardie board showed high resiliency to the unitfire ..............................................................................................................15 Figure 3-14 Wall temperatures during Test 4..............................................................................16 Figure 3-15 Peak flame productions during Test 4.......................................................................17 Figure 3-16 Mast temperatures during Test 4.............................................................................17 Figure 3-17 Adjacent Powerwall temperatures during Test 4 ........................................................18 Figure 3-18 Wall temperatures during Test 5..............................................................................19 Figure 3-19 Adjacent Powerwall temperatures during Test 5 ........................................................19 Figure 3-20 Approximately ten minutes into full Powerwall involvement.........................................20 Figure 3-21 Soffit view approximately thirty-five minutes into full Powerwall involvement................20 Figure 3-22 Wall temperatures during Test 6..............................................................................21 Figure 3-23 Adjacent Powerwall temperatures during Test 6 ........................................................22 Figure 3-24 Full flame production from initial device under test during Test 6.................................23 Figure 3-25 Vinyl siding damage following initial device under test fire ..........................................23 Figure 3-26 Adjacent Powerwall full flame production..................................................................24 Figure 3-27 High output (>1000 ppm) CO measurements............................................................25 Figure 3-28 Low output (<1000 ppm) CO measurements.............................................................25 Figure 3-29 HCl releases of note...............................................................................................26 Figure 3-30 HF and HCN releases of note (Test 6 is 1000 seconds offset for better alignment) .........27 Figure3-31 Benzene release....................................................................................................28 DNV GL— Document No.: 10075610-HOU-R-01-D, Issue: D, Status: Release Page vi www.dnvgl.com n..�a,RutYxYtt?F:-0IlzAs... .. .. ,yx>;;;;., • .<1 H %:Y?^:`. ... ..' ,T'c.`:XYN:�IF`.' Yii <.:AK P><� List of abbreviations Abbreviation Meaning BESS Battery energy storage system CCPS Center of Chemical Process Safety CMU Concrete masonry unit CO Carbon monoxide DNV GL DNV GL Energy Insights, LLC DUT Device under test FMEA Failure mode and effects analysis FTIR Fourier transform infrared gas analyzer IDLH Immediately dangerous to life and health IFC International Fire Code HCl Hydrogen chloride HF Hydrogen fluoride LEL Lower explosive limit NMC Nickel manganese cobalt oxide battery PPE Personal Protective Equipment PPM Parts per million SCBA Self-contained breathing apparatus SME Subject matter expert SOP Standard operating procedure DNV GL- Document No.: 10075610-HOUR-01-D, Issue: D, Status: Release Page vii www.dnvgl.com ;;.;.max ;:a:..:.��usc,�.c: a��-�a- -;.,�wkxar��-� ;::.ss-. .rM.•> ....�.,r:::x;.-.s:,cxv�.arazssrss.. s-crra.. .. EXECUTIVE SUMMARY DNV GL was contracted by Tesla Inc to perform testing on their Powerwall battery energy storage device, which is intended to be installed vertically on existing walls or structures at ground level. The purpose of testing was multifold, with the main intents being to demonstrate 10"as adequate distance for spacing to prevent fire propagation unit to unit, to show that light masonry material is sufficient to prevent fire from the unit from compromising the structure and adjacent exposures, and to show that gases and fire from the battery do not pose a significant risk to adjacent pathways of egress. To demonstrate this, DNV GL built seven"wall samples."These samples were approximately loft wide, 8ft tall walls, as they would be built in a structure, from several different building materials including brick, concrete, Stucco, CMU or cinder block, hardie board, and vinyl siding. All but the concrete and CMU wall also had an accompanying soffit and T section of shingled roof built with them as well. Two Powerwalls were then placed, as they would be installed, on the walls. Internal heaters in one unit would then be activated to drive one unit to failure. Six tests were then run, with the seventh, being similar to the sixth but with worst results expected, cancelled following the sixth test. To answer the questions posed, DNV GL collected temperature and off gas data from the adjacent unit as well as from numerous points around the unit as well as on and above the wall samples. DNV GL also collected offgas data from the units as well as flammability data. DNV GL believes testing demonstrated that 10" is sufficient for spacing against non-flammable walls, with the one test involving a flammable wall allowing propagation after the wall itself caught fire. DNV GL also believes that the units pose minimal risk to the structure even when fully consumed by fire when the units are installed against non-flammable or flame retardant walls; this includes light engineered masonry materials such as hardie board. Finally, DNV GL believes the units do not pose considerable risk to open egress pathways based on gas emissions as well as flame direction from the unit. For First Responders: Gas monitoring, performed during both this testing project and other projects, has demonstrated that in an open environment, either outdoors or in a covered but open-sided structure, there is no major toxicity risk from Tesla battery fires beyond what would be encountered in a typical class A fire. However, Carbon Monoxide (CO) levels in and around the unit will be elevated and may remain so long after the fire is extinguished, as hot batteries continue to generate gas. For this reason, DNV GL recommends that personal protective equipment (PPE), including self-contained breathing apparatus (SCBA), be worn until CO levels are shown to reach safe levels, even during overhaul and in exterior environments. In addition, DNV GL and their fire service partner, Rescue Methods, do not recommend first responders pierce or cut the units during any fire or emergency event. Such procedures run the risk of triggering further failure and thermal runaway even after the systems have stabilized post-fire. For all energy storage installations, DNV GL and Rescue Methods recommend that an emergency management plan or standard operating procedure (SOP) is developed, that owner/operator contact information is available at the site, and that subject matter experts (SMEs) are contractually obligated to be available in a timely manner in case of emergency. DNV GL— Document No.: 10075610-HOU-R-01-D, Issue: D, Status: Release Page viii www.dnvgl.com INTRODUCTION KEMA-Powertest, LLC (DNV GL) was contracted by Tesla, Inc. (Tesla) to perform a live burn of their 13.5 kWh Powerwall product. Tesla's purposes for testing were to provide the large-scale testing data to satisfy exemption requirements in New York City and for states following the International Fire Code and NFPA 1 and to generate data with which to inform code development for the same codes. DNV GL was tasked with burning seven pairs (fourteen units in total) of Powerwalls mounted on seven different common building materials and with five different soffit materials. The Powerwalls were spaced per installation requirements in each test to verify no propagation as a result of installed spacing. Ultimately, testing demonstrated positive results with regard to a lack of fire propagation when installed on several common building materials. DNV GL is of the opinion that this testing data can provide confidence to AHJs and code officials regarding placement of the units in the manner Tesla has proposed. TEST SETUP Tesla shipped fourteen Powerwall 2 units from its Sparks, Nevada facility in January 2018 to the testing facility in Piqua, Ohio via ground freight. The units were shipped at approximately full charge and were received by members of Rescue Methods and Piqua Fire Department. Because of the cold weather in January, the units were stored in a climate controlled room at approximately 55°F. Prior to testing, the units were photographed and all relevant product descriptions, serial numbers, and dimensions were recorded. Each test entailed a pair of Powerwalls mounted to a section of wall constructed of one of seven common building materials with insulation, soffit, and shingles. Further description of the wall sections may be found below in 2.3. In each pair, one unit was fitted with thermocouples to measure temperature impact while the other unit was fitted with cartridge heaters to force a number of cells into thermal runaway. Per Tesla's direction, all Powerwalls were placed such that the edge to edge distance was 10". This is demonstrated below in Figure 2-1 and was verified for every test after installation. DNV GL— Document No.: 10075610-HOU-R-01-D, Issue: D, Status: Release Page -1 www.dnvgl.com :� s \ ROME GY1 fA ^-'"----- � � 4 Figure 2-1 Edge to edge spacing between units in test 1 Testing was conducted on 30 and 31 January 2018, with the first testing beginning just before 1100 EST. Four tests were conducted on the first day, with two additional tests on the second day. The seventh test was cancelled at the request of Tesla, with the expectation that the results would not differ from those of Test 6. DNV GL agreed with this assessment. After testing, the burned units were cooled via fire hose with several tens of gallons being flowed directly into the exhaust ports. In five of the six tests, the adjacent units showed no sign of propagation and no water was directly applied to the units. After testing, the units were dismounted from the wall, photographed, and placed horizontally on pallets for disposal. Disposal was handled by Retriev Technologies of Lancaster, Ohio. DNV GL— Document No.: 10075610-HOUR-01-D, Issue: D, Status: Release Page -2 www.dnvgl.com 2.1 Data Acquisition and Video Unlike testing conducted for standards certification where test set-up must comply with pre- determined requirements, DNV GL and Tesla were able to work flexibly to collect data as needed to support research and potential code exemption. As such, DNV GL moved thermocouples during testing as needed to collect better data or highlight points of interest during certain tests. In addition to data acquisition, which will be discussed in later sections of this report, DNV GL and Rescue Methods also placed three thermal cameras, three regular cameras, and three Firecams around the setup as illustrated in Figure 2-2. Two thermal cameras were placed to record the front side of the wall section, with one pointed at the center of each Powerwall. A third thermal camera was placed behind the wall, recording the center of the wall section. Two Firecams were placed to the side, with lateral views of the wall section facing toward the unit under test, one at the Powerwalls'vent level and one at roof level. Directly opposite, a third Firecam was placed between the top of the Powerwalls and the bottom of the roof. Finally, three regular cameras were used, with one placed in the front, one recording from the rear, and a third installed to capture impact on the soffit. ors IR Probe Inlet In soffit X �r �I X X .+wwvrvwwww:llw 9 Figure 2-2 Camera and thermal measurement device placement 2.2 Gas analysis DNV GL utilized a Fourier transform infrared (FTIR) gas analyzer, a Gasmet DX4000, to sample off-gas composition and concentration. This unit sampled the air inside the test space at 5 second intervals to monitor the typical off-gases from batteries, based on DNV GL's experience. The Gasmet unit was placed approximately 5 feet above the test specimens with the probe tip sometimes directly above the DNV GL— Document No.: 10075610-HOU-R-01-D, Issue: D, Status: Release Page -3 www.dnvgl.com ,...::.,.s �':%:�.'-.-...SSR �m T%'�"v� .�a....,;,,,zv.....srr.........:..:.».,. .��e"�Y�:'.s' �.�.'�.% � "InY4F'>...,:.k..;S:1",A'nf"R97�_%.�.%�' .��yy':N�•�.:%�:':., %:.cya%i:Px4 sf%»F,.x..n.,,;x',i3' W;�IQ«f??N.➢l.F.Cfr>:a' unit and sometimes aligned more into the soffit (when present). The gases sampled and their units of measure are shown below: Water Vapor (H2O, %) Carbon Dioxide (CO2, %) Carbon Monoxide (CO, ppm) Nitrogen Monoxide (NO, ppm) Nitrogen Dioxide (NO2, ppm) Sulfur Dioxide (SO2, ppm) Methane (CH4, ppm) Ethane (ppm) Ethylene (C2H4) Hydrogen Chloride (HCl, ppm) Hydrogen Fluoride (HF, ppm) Hydrogen Cyanide (HCN, ppm) Benzene (ppm) Toluene (ppm) Ethanol (ppm) Methanol (ppm) Propane (ppm) Oxygen (02, %) In addition to the FTIR analyzer, Rescue Methods personnel near the test were equipped with MSA- brand four-gas analyzers that can detect Oxygen (02), Carbon Monoxide (CO), Hydrogen Cyanide (HCN), and the lower explosive limit (LEL, combustible) of the gas mixture. For the purposes of this test, the primary use was to monitor CO, as DNV GL's experience suggests that batteries continue to off-gas CO at high levels long after being extinguished. Measurements from these sensors were monitored and recorded periodically, based on events observed visually and approaches to the unit. 23 Wall sections Seven wall sections were built from common building types for installations per Tesla's specifications. The walls were constructed prior to testing and transported to the site the week of testing. They were constructed to spec, per Figure 2-3 and Figure 2-4 on the following page, from materials outlined in Table 2-1. No defects were observed in any of the walls. The brick, concrete masonry unit (CMU), and concrete wall were unable to cure sufficiently due to low temperatures, and displayed some spalling during testing. This had no effect on the tests. Wall 1, with vinyl siding and poly foam insulation, was not used. The test order was not based on the wall number provided in the table below as well. DNV GL— Document No.: 10075610-HOU-R-01-D, Issue: D, Status: Release Page -4 www.dnvgl.com . ; Base Wall Construc Underlayment d � 5/8"OSB ~ rr : 118" Insulation w "� 96" 16" 2"x 4"Stud 5/8"OSB Building Paper ruu � I � 1 IP.lilgfW iAPoR�. Figure 2-3 Tesla interior wall specs >=36 518"Plywood Underlayment -.�,`� 2"x 6' Base Wall Construction >-24` Soffit(material to match Siding) 5J8"Plywood Wall Supports so;Ar� Building Paper Figure 2-4 Tesla roof and soffit specs DNV GL- Document No.: 10075610-HOU-R-01-D, Issue: D, Status: Release Page -5 www.dnvgl.com ,_a.aa,.. „,:.�.uu.., a.„x.:: �;__..;•., ax¢�;:':;;;zx, .w mann:z<.:, ,x>�?>: x •xxvz, xx..�,r-.:,. .��<.,,:.x..�.r...�„-..;,- z�-.:=:.�.a-.� Table 2-1 Wall materials (set up numbers do not correlate to test numbers) Set up # Wall Construction Insulation Siding Material Roofing Material Material 1 58 Wood Stud Poly Foam Sheets Vinyl Siding Asphalt Shingles 2 SB Wood Stud Fiberglass Vinyl Siding Asphalt Shingles 3 SB Wood Stud Fiberglass Hardie Board Asphalt Shingles 4 5A Wood Stud Poly Foam Sheet Stucco Asphalt Shingles 5 58 Wood Stud Poly Foam Sheet Brick Asphalt Shingles 6 CMU Poly Foam Sheet None N/A&No Soffit and Roof 7 Concrete(Tilt-up) Poly Foam Sheet None N/A&No Soffit and Roof 2.4 Thermocouple and heat flux ganga n'l., During testing, numerous type K thermocouples were used to measure temperature, and were read from one of two National Instrument cDAQ thermocouple reader modules. In each test, Tesla provided five thermocouples in each adjacent module, with one in the center and one in each of the four corners of the Powerwall. In addition, DNV GL provided three to four wall mounted thermocouples around the burned unit, as well as three to five thermocouples on a mast mounted over the roof, depending on the test. One thermocouple was always placed directly behind the center of the unit under test while a second thermocouple was placed on the back side of the wall behind the unit under test. During some tests, a third thermocouple was placed either inside the wall behind the unit under test (and centered of the unit under test), in the flame path (approximately three feet above and to the right of the unit, as shown in Figure 2-2), or high on the backside of the wall to determine temperature through the wall (identical to flame on backside). DNV GL also recorded ambient temperature in the burn area with a thermocouple. DNV GL also utilized two water-cooled heat flux gauges. During the first test, one was placed directly in front of the unit under test while the second was placed 5 feet to the side. Following the first test, the unit to the side was left in place, while the unit to the front, which did not provide reliable results, was relocated to the other side view of the units. Module ignition was initiated by conductive heat exposure. Cartridge heaters were placed into the module"potting”around the cells. For all tests, DNV GL implemented an approximately ten minute "pre-heat"to uniformly heat the cells between the heaters at which point the power supply to the heaters was increased to maximum current. Tesla's observational experience from prior tests indicated approximately 5-10 minutes of directed heat exposure would lead to failure. In all six tests, DNV GL— Document No.: 10075610-HOU-R-01-D, Issue: D, Status: Release Page -6 www.dnvgl.com the ignition method was successful in igniting cells within this expected time frame and in ensuring consistent propagation. 3 TEST RESULTS AND DATA M Test . Brick surface Test 1 was performed on the brick wall, which was built in situ to prevent potential structural issues that could have been caused during transportation. DNV GL utilized the greatest number of data acquisition devices on this test. From this test, however, it was demonstrated that the higher number of devices did not contribute to higher resolution output, and so redundant devices were removed. Further, the thermocouples housed in the Powerwall adjacent to the device under test failed to provide information as fire from the device under test destroyed the cables for these thermocouples. Data from the unit before damage to the cables showed no appreciable temperature gain in the minutes prior to the destruction. Temperature data from the thermal camera trained on this module showed no adverse skin temperatures on the unit during or following testing. As such, in DNV GL's opinion, these changes in test set up still allow for valid results. Wall Thermocouples 600 Back Side of Wall Inside Wall 500 - -Behind Powerwall Back High Side 400 U 0 300 w c 200 E 3: 100 a' r?� 0 -100 0 1000 2000 3000 4000 5000 6000 7000 8000 time (s) Figure 3-1 Temperatures around the device under test during Test 1 DNV GL— Document No.: 10075610-HOU-R-01-D, Issue: D, Status: Release Page -7 www.dnvgl.com Mast Thermocuples 500 Mast 1 (top) 450 Mast 2 Mast 3 400 Mast 4 350 Mast 5(bottom 300 Q 250 E 200 m ~ 150 ;1 .. 100 A P 50 ) r 0 0 1000 2000 3000 4000 5000 6000 time (s) Figure 3-2 Mast temperatures during Test 1 During testing, after heating of the Powerwall unit, a fire formed, quickly moved into the soffit and roof, and was allowed to burn freely, as shown in Figure 3-3. The vinyl soffit was quickly compromised, dropping burning plastic down in the adjacent area, which led to damage of numerous thermocouples. The roughly 3.5'spacing between the top of the Powerwall unit and the soffit was likely insufficient and in cases where flammable soffit or other materials exist, additional space may be required to minimize propagation. DNV GL— Document No.: 10075610-HOU-R-01-D, Issue: D, Status: Release Page -8 www.dnvgl.com 4 �� a� H \ Sys„ . Y a a k Figure 3-3 Peak flame output from device under test during Test 1 DNV GL allowed the unit to burn freely, allowing for higher mast temperatures than were seen during other tests where the roof and soffit were more protected, as will be discussed in later sections. DNV GL also observed discrepancies during testing in the temperatures behind the device under test and inside the wall behind the device under test, which were considerably higher than in all following tests. It is possible these thermocouples were also damaged during testing, as the rear thermal cameras do not show that back wall temperatures rose appreciably. Spalling of the mortar, which was not fully set, may have allowed fire in and around the inside of the wall, though damage to the thermocouples is more likely since their measured temperatures were inconsistent with all other testing. 3.2 Test 2: Concrete surface Following the destruction of numerous thermocouple cables in Test 1, several changes were made to temperature measurements to improve the testing set up. Two thermocouples were removed from the mast above the wall section, with placements of the remaining thermocouples instead at 1', 3', and 5' above the roof line. For Test 2 there was no roof or soffit, and flame temperatures could be measured more directly from the mast, as opposed to Test 1, where ignition of the soffit and roof trusses became the main source of mast temperature increase. Three thermocouples recorded wall temperatures, reduced from four in Test 1. The heat flux gauge directly in front of the unit was also moved to the far left side, 5'from the wall's edge. Finally, the device under test was moved from the left Powerwall unit to the right Powerwall unit. This aligned the device under test under the FTIR DNV GL— Document No.: 10075610-HOU-R-01-D, Issue: D, Status: Release Page -9 www.dnvgl.com .,"""""�.++ .. • .susnsftiis2il�a�Y.9'�e"'o4Ao>6�`�35>Y�S3i)6. •.. sv...,vh YiU�uY.afifSA;Y.�'SYZ>U•3P. etRY�..e••,•»�:.dC.C�xss '�sXikt➢1>• probe. In this test, the lack of roof also allowed the FTIR probe to be placed directly above the device under test, as opposed to tucked into the soffit. Unlike temperature data, which is best displayed on a per test basis, gas data is better displayed relative to other tests, and as such is shown and discussed in Section 3.7 in aggregate. With data acquisition improved, much more clear temperature data emerged, a trend which was consistent for the remainder of the tests. A temperature of roughly 200-250°C was observed directly behind the device under test. Temperatures inside the wall and on the back of the wall, in contrast, showed only negligible increases, as shown in Figure 3-4. Temperatures in the adjacent unit on the fire side rose to between 30 °C and 50 °C, as shown in Figure 3-6. As ambient temperatures were roughly 0°C during testing, a higher ambient temperature could potentially raise an adjacent unit temperature to a less favorable range. However, the thermal management system was disabled for the test, so under normal operations, such a system could mitigate such concerns. Temperatures Around Device Under Test In Test 2 400 Back of Wall 350 Inside Wall - -Behind DUT 300 a 250 CD w 200 I; a) V1E CL { E 150 100 t 50 0 —..._ 0 500 1000 1500 2000 2500 3000 3500 time (s) Figure 3-4 Wall temperatures during Test 2 DNV GL— Document No.: 10075610-HOU-R-01-D, Issue: D, Status: Release Page -10 www.dnvgl.com Mast Temperatures In Test 2 140 5ft 120 .....................3ft 1ft Ambient 100 0 80 4 60 CD CL E y� 40 I ! I el 20 >y —20 0 500 1000 1500 2000 2500 3000 3500 4000 4500 time (s) Figure 3-5 Mast temperatures during Test 2 Tesla Thermocouples 50 { --Tesla TC1 Tesla TC2 40 - Tesla TC3 Tesla TC4 _.Tesla TC5 U 30 _ I a> w 20 r CD E H 10 { 0 -10 0 500 1000 1500 2000 2500 3000 3500 4000 time (s) Figure 3-6 Adjacent Powerwall temperatures during Test 2 DNV GL- Document No.: 10075610-HOU-R-01-D, Issue: D, Status: Release Page -11 www.dnvgl.com �7�'FY5 (fj k3fYt7.t�7C+�y a� r a It f'M ,> -'.tLLkA�ase ` .. arr +rt.aTeor¢ :..^.moi '�° ., tNGAIAJFTtRN Figure 3-7 Peak flame exposure over wall during Test 2 e � �E }mss a a =' M., a c , Figure 3-8 Peak flame production during Test 2 DNV GL— Document No.: 10075610-HOU-R-01-D, Issue: D, Status: Release Page -12 www.dnvgl.com 33 Test 3: Hardie board surface Test 3 was conducted on a wall sided and soffited by hardie board. This material showed a high level of resilience to fire relative to other engineered building materials and in line with more traditional masonry materials; protecting the roof trusses well and preventing significant conduction of heat through the wall, as shown in Figure 3-9. As fire did not propagate into the roof, with the exception of briefly whipping around the open sides, mast temperatures were minimal as flame simply did not reach beyond the roof, as shown in Figure 3-10. As will be discussed further in Section 4.1, the material in this test demonstrated that fire-rated materials are capable of effectively protecting against fire spread from Powerwall systems undergoing catastrophic forced failure. In Test 3, as shown in Figure 3-11, direct heat exposure in the adjacent Powerwall again lead to an internal temperature increase of roughly 40°C. 400 Wall Temperatures During Test 3 --Back of Wall 350 Inside Wall - Behind DUT 300 0 250 200 CU I' ! { E 150 100 .._ 50 0 500 1000 1500 2000 2500 time (s) Figure 3-9 Wall temperature during Test 3 DNV GL— Document No.: 10075610-HOU-R-01-D, Issue: D, Status: Release Page -13 www.dnvgl.com Mast Temperatures In Test 3 50 -5ft aft 40 1ft Ambient U 30 0 N m 20 d CL E ,o o -10 0 500 1000 1500 2000 2500 time (s) Figure 3-10 Mast temperatures during Test 3 Tesla Thermocouples 50 1 Tesla TC1 -�~--Tesla TC2 40 Tesla TC3 Tesla TC4 t Tesla TC5 U 30 #f o � m 20 N CL f ........... F- 10 _ i 3 0 -10 0 500 1000 1500 2000 2500 3000 time (s) Figure 3-11 Adjacent Powerwall temperatures during Test 3 DNV GL-Document No.: 10075610-HOU-R-01-D, Issue: D, Status: Release Page -14 www.dnvgl.com r ; 1 x Figure 3-12 Soffit and roof condition approximately one minute before final extinguishing. Note no apparent heat damage k, T Figure 3-13: Hardie board test after fire peak, the hardie board showed high resiliency to the unit fire 3A Test ,- CMU block surface The concrete masonry unit (CMU) wall, commonly referred to as cinderblock, used in Test 4 again showed trends that were consistent with the previously described tests. Unlike previous tests, where a thermocouple was placed inside the wall, in Test 4, the third thermocouple was instead placed in the expected flame path on the front side of the wall. The device under test's thermocouple shows slow warming, in Figure 3-14, when ignition occurs, while the flame path thermocouple quickly rises to 800°C, which is the commonly observed temperature for smaller battery fires and combustion. As DNV GL— Document No.: 10075610-HOU-R-01-D, Issue: D, Status: Release Page -15 www.dnvgl.com ��;ssaawr; au�rsamrrm,;,�,s,w�..zroern....w:;,:.,�av-�cxcs,.-xm�x--c_;;sv;,:v.�.s,••,.�,.`-�wza`...,.•,,, ,,,,, ,, ,, ,,,�ac>:�us�s„s<a:aaes.»a, .w�ve.sw'�awss,`sasss;»»a:.,;,-c:, 'w,�acas Figure 3-15 shows, the intense flame quickly destroyed the thermocouple. Temperatures on the back side of the wall and behind the device under test were in line with expectations, as were temperatures in the adjacent Powerwall, shown in Figure 3-14 and Figure 3-17 respectively. In Test 4, there was no roof or soffit and the FTIR probe was again placed directly above the device under test as opposed to tucked into the soffit. Wall Temperatures During Test 4 900 Behind Wall 800 Behind DUT .................. Front Right GasPath 700 600 U °. 500 a� 400 CL `m E 300 H 200 100 0 "" -100 0 500 1000 1500 2000 2500 3000 3500 time (s) Figure 3-14 Wall temperatures during Test 4 DNV GL- Document No.: 10075610-HOU-R-01-D, Issue: D, Status: Release Page -16 www.dnvgl.com h, 9?' ; t . .......... E s Figure 3-15 Peak flame productions during Test 4 Mast Temperatures During Test 4 140 ......_........_5ft 120 3ft ................... 1 ft 100 Ambient I 80 60 r 40 � 20 f' 0 -20 0 500 1000 1500 2000 2500 3000 3500 time (s) Figure 3-16 Mast temperatures during Test 4 DNV GL- Document No.: 10075610-HOU-R-01-D, Issue: D, Status: Release Page -17 www.dnvgl.com Tesla Thermocouples 45 Tesla TC1 f 40 Tesla TC2 ! Tesia TC3 35 Tesla TC4 Tesla TC5 - 30 0 m 25 m CL 20 E H 15 10 5 0 0 500 1000 1500 2000 2500 3000 3500 time (s) Figure 3-17 Adjacent Powerwall temperatures during Test 4 §.5 Test 5., Stucco surface with 5/8" sum board soffit The original test set up was modified for Test 5. As it was established in Test 1 that the vinyl soffit would melt and catch fire quickly, DNV GL tested the hypothesis that a piece of masonry board would offer sufficient protection from fire exposure. Leftover 5/8"gypsum board from the construction of Test 3's wall was roughly installed over the vinyl soffit, with ends left open and no sealant used. It is expected that more rigorously installed 5/8"gypsum board, with sealed ends, would offer greater protection. The result showed that this simple material may effectively protect exposures from fire, as posited. Additionally, in Test 5, a fourth wall thermocouple was placed in the soffit above the device under test. As can be seen in Figure 3-18, temperature in the soffit increases minimally relative to past tests. This result is further supported in Figure 3-21, which shows the roof trusses nearly 35 minutes after initial combustion with no apparent heat damage at all. DNV GL— Document No.: 10075610-HOU-R-01-D, Issue: D, Status: Release Page -18 www.dnvgl.com Wall Temperature During Test 5 300 Back Wall 250 Flame Path Behind Unit Soffit 200 U o 150 m CL 100 E H : i j 50 J+ 0 _r _�_ ............ -50 0 500 1000 1500 2000 2500 3000 3500 4000 4500 time (s) Figure 3-18 Wall temperatures during Test 5 Tesla Temepratures and Ambient 35 30 _ Tesla TCI y � Tesla TC2 Tesla TC3 25 Tesla TC4 Tesla TC5 U 20 Ambient j 15 m Q 10 ° , E I H 5 - 0 t; 5i a .. n £ , -101 0 500 1000 1500 2000 2500 3000 3500 4000 4500 time (s) Figure 3-19 Adjacent Powerwall temperatures during Test 5 DNV GL— Document No.: 10075610-HOU-R-01-D,Issue: D, Status. Release Page -19 www.dnvgl.com 5's3y .....F......... ........... .......... .............. n a. r•FM ra; W. 1 mW W , £ q. � G : a : H 8• f s. FF £ xNx Y Is Figure 3-20 Approximately ten minutes into full Powerwall involvement r 18.64:3 ( M) r � a n�.: ..� . a � / y y 5 y ss sss'o I Figure 3-21 Soffit view approximately thirty-five minutes into full Powerwall involvement 3,6 Test p Vinyl siding surface Test 6 was conducted on the vinyl sided wall with vinyl soffit and fiberglass insulation. Based on previous tests, it was expected that the siding would quickly melt and ultimately burn, compromising the entire roof and wall structure and likely resulting in propagation to the neighboring unit. Great care was thus taken to protect the roof at least with the intent of preserving structural integrity. This was done through frequent, short hose bursts into the roof, which can be seen in the brief DNV GL—Document No.: 10075610-HOU-R-01-D, Issue: D, Status: Release Page -20 www.dnvgl.com temperature drops in Figure 3-22. Ultimately, the fire load from the collapsing roof and vinyl siding proved sufficient to ignite the adjacent Powerwall, shown in Figure 3-23 through Figure 3-26. Given the delayed ignition between the conflagration of the first unit and the ignition of the second, it is likely that much of the heat responsible for the ignition came from the wall itself as opposed to the Powerwall. This suggests that spacing alone may not be sufficient for protection between two units adjacent to Vinyl sided building. Though spacing of several feet may be more effective, increasing spacing by 6-25 inches is unlikely to impact the results observed in this test. Wall Temperatures During Test 6 1000 Back Wall 900 In Wall,Flame Path F Behind Unit 800 Soffit 700 °. 600 w 500 & F E 400 a H 300 4. 200 ' \\\ l 100 ! , t 0 0 1000 2000 3000 4000 5000 6000 7000 time (s) Figure 3-22 Wall temperatures during Test 6 DNV GL- Document No.: 10075610-HOU-R-01-D, Issue: D, Status: Release Page -21 www.dnvgl.com Tesla Temepratures 1500 Tesla TC1 Tesla TC2 Tesla TC3 Tesla TC4 Tesla TC5 U 1000 0 d CU CL (::y E F 500 f 4 F O 0 1000 2000 3000 4000 5000 6000 7000 time (s) Figure 3-23 Adjacent Powerwall temperatures during Test 6 DNV GL- Document No.: 10075610-HOU-R-01-D, Issue: D, Status: Release Page -22 www.dnvgl.com w \ Ilk / y \ ft 3 s jt \ \ y • A r � Figure 3-24 Full flame production from initial device under test during Test 6 it L 'II� i �i " 6 £ �f G J Figure 3-25 Vinyl siding damage following initial device under test fire DNV G 1.L— Document No.: 10075610-HOU-R-01-D, Issue: D, Status: Release Page -23 www.dnvgl.com xa„,•;;;< �mx�.•rra.:�.ax ce.Kc.•rx.&y. cc. :.::s: .,,...:: :::_„ .... :::: .......a:� ��c.�:�� �r<saare::.ns.�Kn,�ur.. wenn..:�•;m.; .,.u>,n>vw..oA-cr�sw:. xu> prza:az;� .y z � � �a I 11 Figure 3-26 Adjacent Powerwall full flame production Although seven tests were originally planned, it was not expected that the highly flammable polyfoam insulation in the final test would fare better than the vinyl siding. As such, the seventh test was cancelled. 3.7 Gas Data As previously noted, display of gas data in the context of other tests allows for a more comprehensive understanding of the potential risks. As such, multiple figures are shown below that highlight the trends with respect to gas levels during testing. Immediately apparent, and a positive finding, is the low levels of HCl, HF, and other toxic gases detected. Across all tests, high levels of CO are seen, though Tests 3 and 5 (Figure 3-28) showed levels approximately an order of magnitude lower than Tests 1, 2, 4, and 6 (Figure 3-27). DNV GL has theorized that reduced CO levels in Tests 3 and 5 can be correlated with Hardie board soffits or soffit covers, which preserved the roof and kept direct flame and smoke away from the FTIR probe. DNV GL- Document No,: 10075610-HOU-R-01-D, Issue: D, Status: Release Page -24 www.dnvgl.com 2 , 10 4 High Output CO Test Results ■ Test 1 1.8 X: 1616 Test 2 Y: 1.912e+04 ■ Test 4 1.6 ■ ! X 1743 Tests X: 1539 Y. 1.691e+04 1.4 Y: 1.608e+04 c CL c 0 W 1 c � 0.8 0 U 0.6 X:3810 ( # ■ Y:4083 0# 0.2 [ 1 0 0 1000 2DOP 3000 4000 5000 6000 7000 time (s) Figure 3-27 High output (>1000 ppm) CO measurements Low Output CO Results 450 Test 3 400 Test 5 350 E 300 a a 0 250 C 200 a> U C U 150 i I �< 100 i ..._.._.._...a._.._ ty' a._....._.__ 0 500 1000 1500 2000 2500 3000 3500 4000 4500 time (s) Figure 3-28 Low output (<1000 ppm) CO measurements DNV GL- Document No.: 10075610-HOU-R-01-D, Issue: D, Status: Release Page -25 www.dnvgl.com Tests 2, 4 and 6 all showed relatively high levels of HCl, though tests 2 and 4 saw no roof or soffit and thus the FTIR sampled directly from the device under test smoke as opposed to gases seeping through and around the soffit. In these cases, HCl levels remained below IDLH values (Immediately dangerous to Life and Health) and were expected as plastics, paints, and other organic based materials almost unavoidably contain chlorides in some form. HCI Releases 50 .....................Test 2 45 Test 4 Test 6 40 — 35 E CL a 30 '. c o cwo 25 C U 20 C O s 15 i € J Fl 10 € Ea s 01 >R 5 0 1000 2000 3000 4000 5000 6000 7000 time (s) Figure 3-29 HCI releases of note HF and very short lived spikes of HCN were only present in Tests 3 and 6. Although these off-gases were expected in Test 6, as the entire wall was completely consumed and these gases are known to be released from the wall surface, it is not clear immediately what the source of HF was in Test 3. As with Tests 1, 5 and 6, the FTIR probe in Test 3 was tucked into the soffit, thereby limiting its ability to detect offgas unadulterated. Further, in Test 3, the soffit was comprised of hardie board as opposed to vinyl. DNV GL– Document No,: 10075610-HOU-R-01-D, Issue: D, Status: Release Page -26 www.dnvgl.com Select Gases of Note 80 ..............Test 3 HF Test 3 HCN 70 ..........Test 6 HF Test 6 HCN 60 E a a 50 C 0 M40 M c i v 30 C 0 U 20 10 0 -10 1000 1500 2000 2500 3000 3500 4000 time (s) Figure 3-30 HF and HCN releases of note (Test 6 is 1000 seconds offset for better alignment) Finally, in Figure 3-31, benzene release was documented from Tests 1, 2, and 6. Again it is unclear what trend is leading to this result, as the conditions varied across the tests (FTIR in the soffit, FTIR in the smoke plume, and observed completely consumed wall, respectively) Test 4 saw multiple single points of benzene, but could also be attributed to noise, as none was greater than a single data point. Given that Test 2 was most directly sampling the smoke plume, it is assumed that greater concentrations of benzene were present directly in the smoke plume and did not permeate through the soffits in other cases. In Test 1 as well the soffit was destroyed quickly once exposed to fire. Of note as well is that benzene IDLH is 500 ppm and in all cases the measured value was well below that. DNV GL- Document No.: 10075610-HOU-R-01-D, Issue: D, Status: Release Page -27 www.dnvgl.com Benzene Releases 250 Test 1 Test 2 Test 6 200 E CL 150 c 0 b C v 100 c 0 U 50 0 0 1000 2000 3000 4000 5000 6000 7000 time (s) Figure 3-31 Benzene release OBSERVATIONS AND DISCUSSION Test results were essentially in line with initial expectations and served to further validate many assumptions, including the appropriateness of 10"spacing between units to prevent propagation from direct heat exposure from failing neighboring units. As expected, masonry and masonry products did not show signs of flammability or risk from failing units and even loose masonry board over flammable exposures proved sufficient to stop propagation to flammable materials such as vinyl siding. Vinyl siding did exhibit less than positive, albeit expected, results in regards to heat and flame exposure, and it is not clear that this material makes for a suitable backing for the Powerwall, though the types of failures induced for this testing are themselves highly unlikely. Flame temperatures from the failing units were in line with typical Li-ion battery fires, with temperatures in the direct flame pathways in the 750-800°C range. For extinguishing purposes, the vents on the upper sides of each Powerwall serves as useful entry points for diligent fire fighters to dump water into once the initial flames have died down and the fuel load is diminished or completely exhausted. In the case of internal failures, the consumption of the cells inside is indicated by the heat damage and loss of paint on the front of the unit, with the entire bottom two thirds being lost as indicative of total loss of all cells. DNV GL- Document No.: 10075610-HOU-R-01-D, Issue: D, Status: Release Page -28 www.dnvgl.com 4.1 Effectiveness of hardie board in protecting against fir spread Beyond validating the 10"spacing for limiting propagation, another takeaway from this project was the validation of the effectiveness of simple masonry products, such as hardie board, in greatly mitigating the spread of fire to flammable building materials. Though Test 3 showed that a hardie board wall with hardie board soffit are completely resistant to fire and protect the internal structure, Test 5 demonstrated that hardie board placed, even loosely, over flammable exposures can protect them from propagation. As regulations in New York City currently under development suggest that heavy, fire rated masonry needs to be placed over a large perimeter adjacent to the installation, these tests suggest that even lighter masonry board placed over flammable exposures should sufficiently limit risk of fire spread from failing units. While it remains unclear what distance is required to protect flammable exposures where distance alone serves as the barrier, hardie board has demonstrated that it may effectively block direct fire impingement from very short ranges. 4.2 Discussion of gas data Though high levels of CO are generated in all tests, HCI and HF possess IDLH levels of 50 ppm each, much lower than CO. These levels were observed in tests 3, 4 and 6. The presence of HCI is attributed to the presence of Chlorine (Cl) in many plastics, including frequently the plastics comprising lithium ion batteries typically found in the wrapper or the separator. During combustion, it easily forms HCI. HCl is common in many plastics fires as DNV GL discovered during Consolidated Edison testing' and on a per mass basis relative to plastic is emitted in equal concentrations or greater from plastics than from batteries. HCN and Benzene are also commonly generated in all fires. The presence of HF has a more complicated explanation. The simplest explanation involves the consumption of fluoridated plastics. DNV GL has observed high levels of HF when fluoridated plastics are present, such as PVDF. Other materials may possess some quantity of fluorine as well which results in the emission of HF. In cases where fluoridated plastics are not present, the source of fluorine may come from within the cell itself, as the dissolved salt in Li-ion electrolytes is lithium hexofluorophosphate. Chemical kinetics show that water (H2O) and this dissolved salt may bond to form HF, though this reaction would occur deep in the cell, and the likelihood of this highly reactive molecule making it into the atmosphere are lower. In some previous testing, HF has appeared in inert atmospheres and in other cases where individual cells have vented but not combusted. From this, it is believed that the pure degradation of the electrolyte after it has been emitted from the cell without pyrolysis or combustion creates the conditions necessary for HF to be generated in the atmosphere. With that, an exact explanation for the presence of HF cannot be deduced, but given its absence in tests without plastic construction materials, one explanation for increased levels may be related to the construction, not the battery. Additionally, the events are short lived and only barely exceed IDLH. They also, in one case, occur when the FTIR probe is directly exposed to the smoke plume; this is also the case for the detection of HCl in all three cases. This suggests that limiting direct exposure to battery fire smoke would greatly limit the toxicity concerns, aside from short exposures to higher concentrations of CO, which again are greatly mitigated by the presence of an intact soffit. Data also 1 Hill, D. Warner, N. Considerations for ESS Fire Safety. 2017. DNV GL. DNV GL— Document No.: 10075610-HOU-R-01-D, Issue: D, Status: Release Page -29 www.dnvgl.com shows that the toxic fumes that may be generated by these failures would not impede egress from the area, and do not appear to be the worse than any other common class A material. The presence of any walls or barriers, let alone proper exhaust, should remove these gases and allow for unimpeded egress. CONCLUSION Testing was completed on six pairs of Powerwalls installed on six walls comprised of common building materials. Though vinyl siding yielded less than positive results in regard to fire propagation, and ultimately allowed for propagation to adjacent units, hardie board, and likely any similar lightweight masonry product, may prove highly useful in protecting flammable exposure. In all but the vinyl siding test case, fire from the Powerwalls failed to heat the interior of the walls to dangerous levels. Finally, toxic gases generated by the units during fire should not pose a risk to occupants inside structures and should also pose no risk to egress so long as smoke from the units have not filled a corridor. DNV GL— Document No.: 10075610-HOU-R-01-D, Issue: D, Status: Release Page -30 www.dnvgl.com Driven by our purpose of safeguarding life, property and the environment, DNV GL enables organizations to advance the safety and sustainability of their business. We provide classification, technical assurance, software and independent expert advisory services to the maritime, oil &gas and energy industries. We also provide certification services to customers across a wide range of industries. Combining leading technical and operational expertise, risk methodology and in-depth industry knowledge, we empower our customers'decisions and actions with trust and confidence. We continuously invest in research and collaborative innovation to provide customers and society with operational and technological foresight. Operating in more than 100 countries, our professionals are dedicated to helping customers make the world safer, smarter and greener. T Sw S L 'M� Powerwall 2 AC & Backup Gateway: Permitting & Inspection Support for Tesla Home Energy Storage System Summary Description Powerwall 2 AC (Powerwall) and the Backup Gateway (Gateway) comprise a state-of-the-art battery system for residential and light commercial applications. Together, they enable energy stored from the grid (or renewable sources, like solar), to be used at night or to provide backup power in a grid outage. Powerwall arrives at the job site as a factory assembly that includes: • Lithium-ion battery cells • Isolated DC/DC converter (to step up the battery's voltage) • Integrated AC inverter (to convert low voltage DC from the battery to AC for the home or business) • Liquid thermal management system (to maximize battery performance) The battery cells inside Powerwall are the components closest to a conventional battery. No one is ever exposed to these cells because they are electrically and physically isolated from contact at all times. All Powerwall installations require the Gateway, which serves several functions: • Monitors the grid for outage • Instantly isolates Powerwall from the grid (during grid outage, or when providing backup power) • Communicates with the Powerwall (via communication cables) • Monitors & manages how energy is used (including self-consumption, load-shifting & backup) • Functions as both service entrance and disconnect(when installed with a breaker) When a grid outage is detected, the Gateway instantly isolates Powerwall from the grid using a microprocessor-controlled power contactor. MAIN`..... PANEL �ACKUP SOLAR y..,%�k, .. UTILITY It3V ER7 METFR i ,4t FUtkER4N' Powerwall Installation Example for Whole-Home Backup (Gateway as Service Entrance and Disconnect) Key NEC References Applicable NEC references may vary with the adopted edition of the NEC and site-specific configurations. Generally, Chapters 1 through 4 as modified by the following NEC sections will apply to Powerwall and the Gateway: Article or Section Description NEC Edition 1705 Interconnected Electric Power Production Sources 2014,2017 690.10 Stand Alone Systems 2014 690.71 Storage Batteries 2014 710 Stand Alone Systems 2017 1706 Energy Storage Systems 2017 I Most Common Configurations Solar .......... .......................................... .......... . . ................ .......... 6:;0 Oar-.Of Backup GatewaytY mntcr Grin Powerwall sack:'I'badr. Hoore klads Partial Home Backup (with or without solar) ............. ............ SOW invertp' Backup Gateway SV?*'x* Ut::,tymetw Grid 6 ................. PO—rwalil Whole Home Backup (with or without solar) Solar . ......... f .......... ................... Z:/L.. ...... .. -I-- " NA i ............. ........................... $Ole,inverter --------------- ...... Maki pane: Backup Gateway Utility meter 'Gr i 0 Powerwall whole hor—C ba';wp Whole Home Backup (using Gateway as Service Entrance & Disconnect, with or without solar) Key Specifications & Certifications (Full datasheets provided separately) Powerwall Electrical Energy 13.5 kWh AC Voltage (Nominal) and 120/240 V: 24 A Maximum Continuous Current Frequency(Nominal) 60 Hz Power, max continuous 5 kW (charge and discharge) Power, peak(10 seconds) 7 kW (charge and discharge) Overvoltage Category Category III Max Supply Fault Current 10 kA Max Output Fault Current 32 A Powerwall Environmental & Certifications Operating Temperature -20°C to 50°C (-4°F to 122°F) Enclosure Type NEMA 3R Ingress Rating IP67 (battery and power electronics) IP56 (wiring) Wet Location Rating Yes Seismic Rating AC156, IEEE 693-2005 (high) Safety Certifications (partial list) UL 1642, UL 1741SA, UL 1973, UL 9540 N RTL I ntertek/ETL Powerwall Mechanical Height 45.3 in Width 29.7 in Depth 6.1 in Weight 276 lbs Gateway Electrical Disconnect Current 200 A Overcurrent Protection Breaker 100-200 A(Service Entrance configuration) Overvoltage Category Category IV Fault Current Withstand Rating 10 kAIC (Configurable to 22 kAIC) AC Meter Revenue grade Service Rating Suitable for Use as Service Equipment Gateway Environmental & Certifications Operating Temperature -20°C to 50°C(-4°F to 122°F) Enclosure Type NEMA 3R Ingress Rating IP44 Safety Certifications (partial list) UL 1642, UL 1741, IEC 61000-6-3, IEC 62109-1 NRTL I Intertek/ETL Gateway Mechanical Height 29.1 in Width 14.9 in Depth 5.1 in Weight 36 lbs Frequently Asked Questions Are Powerwall and the Gateway listed equipment? Yes. Powerwall and the Gateway are listed to the applicable product standards by Intertek/ETL, an OSHA- approved Nationally Recognized Testing Laboratory (NRTL). See the table above for a partial list of certifications. If physical certificates are required, please email Dowerwallc(:btesla.com. What safety features does Powerwall include to avoid thermal runaway? To resist single cell thermal runaway, Powerwall complies with requirements in UL 1973 and IEC 62619. For example, UL 1973 includes an internal fire test that ensures a runaway in one cell can't propagate to neighboring cells. Onboard sensors and the battery management system (BMS) provide multiple layers of protection to detect and stop precursors to thermal runaway. How much does the AC Powerwall weigh, and will it comply with seismic requirements when wall-mounted? Powerwall weighs 276 lbs. and complies with seismic requirements when wall-mounted according to manufacturer's instructions. It has been evaluated to ICC Acceptance Criteria AC156 for seismic requirements. Installation methods also comply with IEEE Standard 693-2005 for seismic design. Is guidance available for emergency personnel working around a Powerwall that has been physically damaged? Yes. An Emergency Response Guide is available on request. Emergency and maintenance personnel can work safely around Powerwall after opening the system's AC disconnect and/or breaker on the grid side. Water is the recommended suppressant in case of a fire involving a lithium-ion battery and will not exacerbate a fire involving lithium-ion cells. Does Powerwall require additional venting to prevent the accumulation of flammable or explosive gases? No. Unlike conventional lead-acid batteries, which produce hydrogen gas, the individual cells in the Powerwall are hermetically sealed and do not require additional ventilation. NEC [480.9(A)], NFPA 1 Chapter 52, and the 2018 IFC, all make clear venting is not required for lithium-ion batteries. How much electrolyte is in Powerwall? Tesla lithium-ion battery packs do not contain free liquid electrolyte and do not pose a liquid release hazard. If an enclosure is punctured, there are no electrolytes to "spill" onto the floor. Secondary containment measures are not needed. NOTE: IFC Section 608 does not require spill control or neutralization for lithium-ion battery systems. Secondary containment is not applicable or required for this technology. Is Powerwall's battery pack low voltage? Yes. The internal battery pack operates at less than 50 VDC nominal. Unlike legacy battery systems, Powerwall is a fully enclosed, factory-listed assembly with no accessible battery terminals or live parts. Powerwall's output is AC and matches that of the serving utility. Powerwall's onboard inverter functions exactly like a solar PV inverter. Are the working clearances outlined in the NEC 110.26 applicable to Powerwall? No. Because Powerwall will never require examination, adjustment, servicing, or maintenance while energized, working clearances in Article 110.26 do not apply. ® Does Powerwall require a separate disconnect? No. Powerwall's onboard switch disconnects all ungrounded conductors and complies with Article 690.71 (2014) and 706.7 (2017). NOTE: These articles require a second disconnecting means at the connected equipment when: • Separated by a wall or partition, or • Input and output terminals are more than 5ft away. This second disconnect will typically be the 2P/30A breaker installed at the point of connection. Can Powerwall be installed outdoors? Yes. Powerwall is a NEMA Type 3R enclosure and can be installed outdoors. What prevents Powerwall from back-feeding the utility grid during a power outage? During a power outage, the Gateway automatically isolates the home from the grid per IEEE 1547. Powerwall and Gateway are both listed to UL 1741 because they are subject to the same anti-islanding rules as a typical grid-interactive PV system. Gateway reconnects to the grid once it is stable for at least 5 minutes. What is the maximum number of circuits that can be backed up for a single Powerwall? The number of circuits that a single Powerwall can back up isn't specified. The duration of backup power is a function of Power * Time, stated in Watt-hours. The maximum continuous output at any given time is limited to 5000W, with a peak output capacity of 7000W for 10 seconds. The number of loads and circuits the customer wants backed up will determine the overall system size, including total number of Powerwalls required. Is Powerwall required to be capable of backing up all the home's loads simultaneously? No. When Powerwall is operating as a stand-alone system, as permitted in 705.40, available current must be "equal to or greater than the load posed by the largest single utilization equipment connected to the system" (not including general lighting loads). Guidance on system sizing may be found in NEC Articles 690.10 [2014] and 710.15(A) [2017]. When in backup mode, what happens if the load exceeds Powerwall's rated output current? Powerwall automatically shuts down. Powerwall's inverter is an inherently power- and current-limited device. If Powerwall is operating at full rated output current and more load is applied, it simply cannot produce more current. The inverter will sense the corresponding voltage change and immediately shut off. There is no risk for over-discharging above the rated nameplate of Powerwall. Inspection Guide In addition to a simpler installation process, Powerwall and Gateway systems are easier to review for safety and code compliance. Primary code references are from the 2014 NEC. Additional references [in brackets] are from the 2017 NEC. General Requirements • Listing verification - Equipment bears the mark of a Nationally Recognized Testing Laboratory. 90.7, [706.5] • Manufacturer's installation instructions followed. 110.3(B) • The completed installation appears to be neat and of good workmanship. 110.12 • Working clearances are in accordance with 110.26 for any components that are "likely to require examination, adjustment, servicing, or maintenance while energized." o Note that Powerwall has no accessible DC battery interconnections within the unit, and does not require maintenance while energized. o The ventilation clearance requirements found in 480.9 do not apply to this technology. Tesla Powerwall complies with [706.10(A)] using a pre-engineered ventilation solution. a Wiring Methods • All conduit and fittings properly installed per the respective article in Chapter 3 of the NEC. • Conduit is adequately secured and supported. 3xx.30 • Raceways containing insulated circuit conductors 4 AWG and larger are protected from abrasion by an identified fitting providing a smoothly rounded insulating surface. 300.4(G) • Residential Energy Storage equipment grounding conductor is identified as either bare, green, or green with continuous yellow stripe(s). 250.119 • Grounded conductor identified properly. 200.6(A), (B) Overcurrent Protection and Wire Sizing Conductors and OCPDs are adequately sized per Articles 240 and 310 unless modified by 690.9(A), 690.10(B), or [706.20] and [706.21]. Disconnecting Means • Disconnecting means are provided to disconnect the energy storage device from all ungrounded conductors of all sources. 690.15 and/or [706.7]. This requirement is met by the integrated disconnect switch. • Where the energy storage device output terminals are more than 1.5 m (5 ft) from the connected equipment, or where output circuits pass through a wall or partition, a disconnecting means and overcurrent protection shall be provided at the energy storage device end of the circuit. 690.71(H), [706.7(E)]. The Powerwall complies with both the letter and the intent of the NEC: o As previously mentioned, the Powerwall is an inherently current-limiting device that will not contribute fault currents to the AC output circuit. It is important to note that the 2017 NEC has removed this overcurrent requirement altogether and clarified that the intent was to protect the DC conductors of a conventional battery. o The integrated disconnect satisfies the requirement for the energy storage device end of the circuit. o If the integrated disconnect is not within sight of the connected equipment, the 2P/30A breaker installed at the point of connection is the additional disconnect required by 690.71(H)(4). Labeling • A sign that indicates the type and location of on-site optional power sources is placed at building utility service-entrance location. 705.10, [706.11] • Equipment fed by multiple sources are marked to indicate all sources of supply. 705.12(D)(3). • Where the integrated disconnect and the 2P/30A breaker are not within sight, a plaque or directory shall be installed at each disconnect indicating the location of the other disconnecting means. 690.71(H)(5) or [706.7(E)(5)]. Additional resources For compliance questions, a complete list of FAQs, or to request a Powerwall presentation for your building department, fire department or trade group (such as ICC and IAEI chapters) email CodeComaliance(a)tesla.com. SEAC, the Sustainable Energy Action Committee, is a not-for-profit partnership of AHJs, testing laboratories and industry. SEAC has created free guidelines for building officials to plan check, correct and inspect storage battery systems for one- and two-family dwellings, available for download here.