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2 CROWDIS ST - BUILDING INSPECTION 1pb `� sLl The Commonwealth of Massachusetts °. Board of Building Regulations and Standards CITY.OF q Massachusetts State Building Code,780 CMR Revised=vf 201 Building Permit Application To Construct,Repair, Renovate Or Demolish a One-or Two-Family Dwelling 9 This Section For Official Use Only Building Permit Number: Date Applied: '(3 — JV < ' C+t O Building,Official(Print Name) Signature e SECTION 1: SITE INFORMATION _ 1. Pro�{Sert'y Address• 1.2 Assessors Map&Parcel Numbers 1.1 a Is this an accepted street?yes x no Map Number Parcel Number 1.3 Zoning Information: 1.4 Property Dimensions: Zoning District Proposed Use Lot Area(sq ft) Frontage(ft) 1.5 Building Setbacks(11) Front Yard Side Yards Rear Yard Required Provided Required Provided Required Provided 1.6 Water Supply:(M.G.L c.40,§54) 1.7 Flood Zone Information: 1.8 Sewage Disposal System: Public❑ Private❑ Zone: _ Outside Flood Zone?Check ifyes❑ Municipal❑ On site disposal system ❑ SECTION 2: PROPERTY OWNERSHIP' 2.1 Owner'of Record: tau-Wi�,r Iro.v�(ssds Salewl Name(Print) City,State,ZIP A CW�a tka s- trna SnLi -l-Noon No.and Street - Telephone Email Address SECTION 3:DESCRIPTION OF PROPOSED WORK'(check all that apply) New Construction tt I Existing Building❑ Owner-Occupied ❑ 1 Repairs(s) ❑ Alteration(s) ❑ Addition ❑ Demolition ❑ Accessory Bldg.❑ Number of Units_ Other ❑ Specify: Brief Description of Proposed Work': C) Dhotovnl-FcilC. solar SyS{PyYIS Gt 1 SECTION 4:ESTIMATED CONSTRUCTION COSTS Item Estimated Costs: Official Use Only (Labor and Materials L Building $ L Dp I. Building Permit Fee:$ Indicate how fee is determined: 2.Electrical ❑Standard City/Town Application Fee $ � 00 ❑Total Project Cost'(Item 6)x multiplier x 3.Plumbing $ 2. Other Fees: $ 4.Mechanical (HVAC) $ List: 5.Mechanical (Fire $ -Suppression) Total All Fees: $ Check No._Check Amount Cash Amount: 6.Total Project Cost: $ a) `Z ❑Paid in Full 0 Outstanding Balance Due: SECTION 5: CONSTRUCTION SERVICES 5.11_Construction Supervisor License(CSL) 0 45 Z5 4 2$ m �KA.me-�S -: \mey yLa r) License Number Expiration ate Name of CSL Holder �1 1 in SnQ� Lis[CSL Type(see below) U No.and Street r l Type Description SQ( (S IDS U Unrestricted(Buildings u to 35,000 cu.ft. It Restricted 1&2 FamilyDwelling CityITown,Stat ZIP M Masonry RC Roofing Covering WS Window and Siding jh�4�L67-7- ',�1.� SF Solid Fuel Burning Appliances �VIVIr p�q)�(f I Insulation ail address C.Or"1 D Demolition 5.2 Registered Home� Improvement Contractor(HIC) I-1 0�WS k tl \ yin-f' Solo—Ie /e-l0p� LLC' HIC Registration Number E pira on Date HIC Com any Name or HIC Registrant Name Fg31 et �oD W . M-asolart�Vmy-IA-so r No.and Street Email address Lpyvt 4`�roYo 1 �tk1004 -I$1305301¢S City/Town,State,ZIP Tele hone SECTION 6:WORKERS'COMPENSATION INSURANCE AFFIDAVIT(M.G.L.C.152.§ 25C(6)) Workers Compensation Insurance affidavit must be completed and submitted with this application. Failure to provide this affidavit will result in the denial of the Issuance of the building permit. Signed Affidavit Attached? Yes..........A No...........❑ SECTION 7a:OWNER AUTHORIZATION TO BE COMPLETED WHEN OWNER'S AGENT OR CONTRACTOR APPLIES FOR BUILDING PERMIT I,as Owner of the subject property,hereby authorize VI V 1✓Z'F Sri�Clr to act on my behalf,-iinn/a/n matters relative to work authorized by this building permit application. Al / Print Owner's Name(Electronic Signature) Da e SECTION 7b: OWNEW OR AUTHORIZED AGENT DECLARATION By entering my name below,I hereby attest under the pains and penalties of perjury that all of the.information contained in th' p ' tion is true and accurate to the best of my knowledge and understanding. V fi Gl� Print O s r rized Agent's Name(Electronic Signature) Date NOTES: 1. An Owner who obtains a building permit to do his/her own work,or an owner who hires an unregistered contractor (not registered in the Home Improvement Contractor(HIC)Program),will not have access to the arbitration program or guaranty fund under M.G.L.c. 142A.Other important information on the HIC Program can be found at www.mass.eov/oca Information on the Construction Supervisor License can be found at www.mass.lov/dps 2. When substantial work is planned,provide the information below: Total floor area(sq.ft.) (including garage,finished basementlattics,decks or porch) Gross living area(sq.ft.) Habitable room count Number of fireplaces Number of bedrooms Number of bathrooms Number of half/baths Type of heating system Number of decks/porches Type of cooling system Enclosed Open 3. "Total Project Square Footage"maybe substituted for"Total Project Cost" �``� CERTIFICATE OF LIABILITY INSURANCE °110112013 ""Y' nrov2D13 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 MARSH USA INC. NAME: 122517TH STREET,SUITE 1300 PHONE FAX A A C No DE CO 80202-5534 M Attn:Denver.cenrequest(marsh.com,Fax:212.9484387 ADRESS: INSURE B AFFORDING COVERAGE NAIC 9 462738-STND-GAWUE-13-14 INSURER A:Evanston Insurance Company 35378 INSURED National Union Fine insuance Go of PA Vivint Solar,Inc. INSURER B 4931 N 300 W INSURER C:New Hampshire Insurance Company 23841 Prow,UT 84604 INSURER D: INSURER E: INSURER F: COVERAGES CERTIFICATE NUMBER: SEA-002368030-06 REVISION NUMBER:0 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 POOL SUBR POLICY EFF POLICY EXP LTR TYPE OF INSURANCE POLICY NUMBER MMIpOIY 111 MMIO L WTS A GENERAL LIABILITY 13PKGWE00274 11/01/2013 11/01/2014 EACH OCCURRENCE $ 1,000,000 X COMMERCIAL GENERAL LIABILITY R N D f0000 PREMISES Ea occurrence) $ CLAIMS-MADE a OCCUR MED EXP(Any one person) $ 5,000 PERSONAL SADV INJURY $ 1,000,000 GENERAL AGGREGATE $ 2,000,000 GEN'L AGGREGATE LIMIT APPLIES PER PRODUCTS-COMPIOP AGO $ 2,000,000 X POLICY PRO- LOC $ B AUTOMOBILE LIABILITY 9701087 11/01/2013 11/01/2014 COMBINED SINGLE-LIMIT 1,000,000 Ea accdent B X ANY AUTO 9701088 11/01/2013 11/01/2014 BODILY INJURY(Per person) $ A�OOWNED SS AUTOESULED BODILY INJURY(Per accident) $ X HIREDAUTOS N NON-OWNEDPROPERTY DAMAGE $ AUTOS Per accident A UMBRELLA LIAR OCCUR 13EFXWE00W8 111012013 1110112014 EACH OCCURRENCE $ 10,000,000 X EXCES X S LIAB CLAIMS-MADE AGGREGATE $ 10,000,000 DED 1 RETENTIONS 1 $ G WORKERS COMPENSATION 029342334; 029342335 11012013 11/012014 X I WC STAT J OTH- AND EMPLOYERS'LIABILITY YIN ANY PROPRIETOR/PARTNERIEXECLITIVE YIN 029342336; 029342337 11Ni2013 11/012014 E.L.EACH ACCIDENT $ 1,000,000 G OFFICERIMEMSER EXCLUDED? NIA (Mandatory In NN) ILI 029342338 11/012013 11/012014 E.L.DISEASE-EA EMPLOYE $ 1,000,000 If yes,describe under 1,00Q000 OESCRIPTION OF OPERATIONS below E.L.DISEASE-POLICY LIMIT $ A Enors B Omissions 8 13PKGW00029 11/0112013 11101/2014 LIMIT 1,000,000 Contractors Pollution DEDUCTIBLE 5,000 DESCRIPTION OF OPERATIONS T LOCATIONS/VEHICLES (Attach ACORD 101,Addmonal Remarks Schedule,H more apace Is rewired) ' The Certificate Holder and others as defined in the written agreement are included as additional insured where required by written contract with respect to General Liability.This insurance is primary and non- onbibutory over any existing insurance and limited to liability arising out of the operators of the named insured and where required by written contract.Waiver of subrogabon Is applicable where required by written ontract with respect to Coronet Liability and Workers Compensation. CERTIFICATE HOLDER CANCELLATION City of Salem SHOULD ANY OF THE ABOVE DESCRIBED POLICIES BE CANCELLED BEFORE 93 Washington Street THE EXPIRATION DATE THEREOF, NOTICE WILL BE DELIVERED IN Salem,MA 01970 ACCORDANCE WITH THE POLICY PROVISIONS. AUTHORIZED REPRESENTATIVE of Marsh USA Inc. Kathleen M.Parsloe yrrdX„[ z'T- f;/.cdll ©1988-2010 ACORD CORPORATION. All rights reserved. ACORD 25(2010105) The ACORD name and logo are registered marks of ACORD t L (.®P4,-TeS.S.9tt'ee$, $b6dte dPd7d ,Wml Boston, MA 02114-2017 44tww tnrass.gov/diet Workers' Compensation Insurance Affidavit: Builders/Contractors/Electricians/Plumbers Applicant Ianformation Please Print Legibly Name (Business/Organization/individual): Vlvint Solar Developer, LLC Address:4931 North 300 West City/State/Zip:Provo, UT 84604 Phone #:801-704-9389 Are you an employer? Check the appropriate box: Type of project(required): 1. 9 I am a employer with 10 4. ❑ I am a general contractor and I employees (full and/or part-time).* have hired the sub-contractors 6. El New construction 2.❑ I am a sole proprietor or partner- listed on the attached sheet. 7. ❑ Remodeling ship and have no employees These sub-contractors have 8_ ❑ Demolition working for me in any capacity. employees and have workers' 9. ❑ Building addition [No workers' comp. insurance comp. insurance.l required.] 5. ❑ We are a corporation and its 10.❑ Electrical repairs or additions 3.❑ I am a homeowner doing all work officers have exercised heir 1 L❑ Plumbing repairs or additions myself. [No workers' comp. right of exemption per MGL l2.❑ Roof repairs insurance required.] t c. 152, §1(4), and we have no employees. [No workers' 13.❑ Other comp. insurance required.] *Any applicant that checks box k1 must also fll}oat the section below showing their workers'compensation policy information. r Homeowners who submit this affidavit indicating they are doing all work and then hire outside contractors must submit anew affidavit indicating such. ,Contractors that check this box must attached an additional sheet showing the name of the sub-contractors and state whether or not those entities have employees. If the sub-contractors have employees, they must provide their workers'comp.policy number. I am an employer that is providing wor,6ers'compensation insurance fo:my employees. Below is the policy and job site information, Insurance Company Name:New Hampshire Insurance Comany Policy# or Self-ins.. Lic. #:029342228 Expiration Date: 11-01-14 Job Site Address: �uy—l��S t City/State/Zip:(_:�C(` .M t a1C{10 Attach a copy of the workers' compensation policy declaration page(showing the policy number and expiration date). Failure to secure coverage as required tinder Section 25A of MGL c. 152 can lead to the imposition of criminal penalties of a fine up to S 1,500.00 and/or one-year imprisonment, as well as civil penalties in the form of a STOP WORK ORDER and a fine li of up to $250.00 a day against the violator. Be advised that a copy of this statement may be forwarded to the Office of Investigations of the DIA for insurance coverage verification. I do hereby cer ' under.th-a paitys and penalties ofperjury that the information provided above is true and correct. % r �% �e� Signature: -.. .T� ,� Date- -31 Lj I I Imi . Phone#: 801-704-9389 Official use only. Do not write in this area, to be completed by city or town official. City or Town: Perumit/I.icense # Issuing Authority(circle one): 1. Board of Health 2. building(Department 3. City/('own Clerk 4. Electrical Inspector 5. Plumbing Inspector 6. Other Contact Person: Phone#: U fte � W1(11taiziaaC~je'(& Office of Consumer Affairs find Business Regulation 10 Park Plaza - Suite 5170 Boston, Massachusetts 02116 Home Improvement Contractor Registration Registration: 170848 Type: Supplement Card VIVINT SOLAR DEVELOPER LLC. Expiration: 1/5/2016 JAMES SHERMAN 4931 NORTH 300 WEST PROVO, LIT 84604 Update Address and return card.Mark reason for change. scA 1 c• 20M-05/1I Address ❑ Renewal ❑ Employment Lost Card ��ze�amvmwavweall�i,a�C�/�auerrcaluioelt ffice of Consumer Affairs&Business Regulation License or registration valid for individul use only ME IMPROVEMENT CONTRACTOR before the expiration date. If found return to: Office of Consumer Affairs and Business Regulation Registration: 170848 Type: 10 Park Plaza-Suite 5170 Expiration: 1/5/2016 Supplement Card Boston,MA 02116 VIVINT SOLAR DEVELOPER LLC. JAMES SHERMAN 4931 NORTH 300 WEST PROVO, UT 84604 Undersecretary Not valid without signature t Massachusetts -Department of Public Safety . Board of Building Regulations and Standards Cnnstruction Supemsor License: CS-045254 JAWS R SHERMAN 81 MAIN ST _ SAUGUS MA 01906 y �,,�„•, fj ,. Expiration Commissioner 08/28/2014 P" a nomeer 2781 Fries Mill Road,Williamstown,NJ 08094 Tel: 856.770.4473; rdcipolla@verizon.net Vivint Solar February 27, 2014 24 Normac Road Woburn MA, 01801 Attn: Mr. Paul Greene, Operations Manager Re: Structural Engineering Services for Roof Mounted Photovoltaic (Solar) Panel Installations at Travassos Residence, 2 Crowdis Street, Salem,MA AR#3587044 Dear Paul: We are providing you with this structural assessment report of Vivint Solar's photovoltaic (solar) roof installations to be completed at the above referenced dwelling. The following assessment criteria is based upon Vivint's recent dwelling site visit including roof framing photographs and field notes. We have also reviewed Vivint's PV Solar Permit Submittal, calculations, installation layouts and notes, PV 1.0 "Site Plan",PV 2.0 "Roof Plan", and PV 3.0, "Mounting Details". All were supplied for information on the proposed solar panels installation on the dwelling's roof framing members. The following is our assessment summary. The dwelling is timber framed of newer construction age with an "A" framed main roof, 3' — 6" +/-high, built from what appears to be pre-fabricated/pre-engineered modular units. The framing consists of sectional roof units with nominal 2" x 6" dimensional lumber top chords ("joists") and 2" x 4" interior end vertical chords at 16" o/c, placed under each joist, typical. There are no other attached roofs receiving solar panels. Two layers of roof shingles are assumed throughout. Materials are assumed as minimum Hem-Fir,#2 grade, or better, conservatively, with standard pre-fabricated factory built modular framed construction components. The modular unit bottom chords were not measured for this work. The attic floor is not covered with plywood for storage and reinforcing. No collar ties are installed, but there is continuous 2" x 4"bearing top plates for the 2" x 6" top chords, each side of the ridge in units, and laterally by roof sheathing, and continuous 2" x 8" ridge beams. The attic is a not finished, and roof framing was accessible in most areas at the site inspection and evaluation, so a complete assessment and confirmation of framing, spacing, sizes and condition was able to be performed for this roof. No architectural drawings were available at the time of this report preparation. Refer to plans and documents prepared by Vivint for dwelling dimensions, locations and sizes of solar panel units. The roof framing members were reviewed and analyzed for their capacities for new loads. A. CAPACITY OF EXISTING ROOF TO SUPPORT PROPOSED SOLAR PANELS: 1. Our assessment included using the proposed solar panels dead load that were given to us in the ZEP calculation sheets and the live and dead loads described below. Our review of the roof information shows that there are no visible undulations or unevenness, indicating that the roof framing members are not visibly overstressed or weakened by past heavy snow loads. ' Mr. Paul Greene February 27, 2014 Page 2 2. Given the dwelling's roof construction and condition, the existing roof unit's load carrying capacity will be able to carry the additional dead and redistributed live loads from the solar panels if installed correctly. The dwelling's roof members will be able to redistribute the snow live loads, and added solar panels dead load to the adjacent framing members. These additional loads should not produce stresses beyond the allowable stress range for roof framing members assumed Hem-Fir#2 materials. Considering the lower roof slopes, array sizes,roof section units' bracing, framing, size, spacing, and condition, the panel supports shall be set on/attached to every second roof joist for lateral installations across joists No panel support spacing shall be greater than two (2) roof joists spaces, or 32"+/-o/c,to be specified in the PV 2.0 Roof Layout Plan(s). Note -Layout Array Drawing 41 submitted for review, shows every four joists, 64" o/c maximum panel support spacing, and needs to be revised to the above spacing. The supports shall be installed in a staggered pattern to provide proper load distribution, and with no more than three supports installed on any single joist,except at ends of layouts. After revising, this layout can be used for permit submittals and installations. All panels shall be installed as shown on the layout plans, with 32" o/c maximum support spacing, or two ioist spaces and staggered to be shown in the final revised PV 2.0 Roof Layout plan(s) as stated above. Framing member sizes, spacing and condition must be properly verified by Vivint's installers, prior to any installations. This information is to be sent to this engineer for review and approval, prior to continuing installations, if different than stated herein. 3. This assessment meets current Massachusetts Building Code, 8ffi Edition—Residential —Amendments to International Residential Code, (IRC), 2009 Edition, for one and two family dwellings. B. SOLAR PANEL ATTACHMENT TO ROOF STRUCTURE: 1. The solar panels shall be mounted in accordance with the latest"ZEP Company's Code Compliant Installation Manual" found on the ZEP website and not included herein. No additional reinforcing requirements are required for these installations. However, if during solar panel installations, the roof framing members feel unstable, or show interior or exterior evidence of minor or excessive movement, then this engineer should be notified as soon as possible prior to proceeding with installations. 2. Vivint should notify the homeowners that long term build-up of accumulated snow in the event of extreme snowfall conditions, may produce some roof deflections. These deflections will be temporary in nature and will not affect the roof's structural - integrity. The solar panels do not need to be cleared of such accumulated snow. C. WIND UPLIFT LOAD: 1. Refer to attached ZEP calculation sheet for ASCEISEI 7-10 Minimum Design Loads Mr. Paul Greene February 27, 2014 Page 3 For Buildings and Other Structures, wind speed this location of 100 miles per hour* based on Exposure Category "B" and 23 degree roof slopes on the dwelling's roof areas. Ground snow load is 40 p.s.f. * for Exposure"B",Zone 1 (per ASCEISEI 7-10) of the roof s interior portion, and effective wind speed of 100 mph*, uplift is shown. 2. Total area subject to wind uplift is calculated for the Interior,Edge and Corner Zones. A maximum and user selected support(foot) spacing is shown for each location zone. D. PANEL ANCHORAGES: 1. Maximum allowable pullout per lag screw=235 #/inch from National Design Standards (NDS) of timber construction specifications for Hem-Fir-North lumber (assumed). Therefore using 4 lag screws, the pullout value is less than 235 4/inch of screw thread and OK. Considering the condition,variable factors for the existing roof framing members, and installation tolerances, use a threaded depth of 2 ''/a" with a minimum 5/16" lag screw per attachment points in roof joists "rafter" components for solar panel anchor mounts. This should give a sufficient factor of safety. E. LIVE DEAD AND SNOW LOADS: 1. Live load=40 p.s.f ground snow load; 10 p.s.f attic storage (truss/modul.) Dead Load= 10 p.s.f- roofing and framing; 5 p.s.f. -panels, mounting hardware Total Live Load=40 p.s.f,; Total Dead Load= 15 p.s.f. 2. These values are within acceptable limits of recognized industry standards for similar structures. The roof members will be able to sustain the solar panel attachments without damage, if installed in a workmanship like manner according to the above criteria. We have based our structural capacity determination on applicable building codes, professional engineering inspection and design experience, opinion and judgments. This report covers this dwelling's assessment for only the areas for solar panel installations. Assessments were made according to generally recognized structural analysis standards and procedures. The normal structural engineering industry standard of care utilized for this type of work was used during this report preparation. The assessments and recommendations in this report were reviewed to ensure a proper level of quality and uniformity. This report adheres to accepted State and National practices for current building code standards and can be used for construction purposes. If you have any questions or require further information, please do not hesitate to contact 8� Respec y sub i t� Russell D. Cep , R o Structural Engineer, Owner o RUSSELLD. �Fn� Mass. License No. EN-47478-S CIPCLLA STRUCTURAL w No.47478 * Or as specified locally, by the State Board of Bldg. Regs. And Stds., whichever go RDC/rdc 9FGIsTEP``� �SStONALEN�'\� �4 Vivint Solar - PV Solar Rooftop System Permit Submittal 1. Project Information Project Name: Heather Travassos Project Address: 2 Crowdis St,Salem MA A.System Description: The array consists of a 4.25 kW DC roof-mounted Photovoltaic power.system operating in parallel with the utility grid.There are(17) 250-watt modules and (17)215-watt micro-inverters,mounted on the back of each PV module.The array includes(1)PV circuit(s).The array is mounted to the roof using the engineered racking solution from Zep Solar. B.Site Design Temperature: (From Boston Logan INT'L ARPT weather station) Average low temperature: -21.1 °C (-5.98°F) Average high temperature: _38.4°C (101.12°F) C. Minimum Design Loads: Ground Snow Load: 40 psf (State Board BR&S) Design Wind Speed: 100 mph (State Board BR&S) 2. Structural Review of PV Array Mounting System: A. System Description: 1.Roof type: Comp. Shingle 2.Method and type of weatherproofing roof penetrations: Flashing B. Mounting System Information: 1.Mounting system is an engineered product designed to mount PV modules 2.For manufactured mounting systems, following information applies: a.Mounting System Manufacturer: Zep Solar b.Product Name: ZS Comp c.Total Weight of PV Modules and mounting hardware: 731 Ibs d.Total number of attachment points: 44 e.Weight per attachment point: 16.61 Ibs/square foot f.Maximum spacing between attachment points: *See attached Zep engineering talcs g.Total surface area of PV array: 299.37 square feet In.Array pounds per square foot: 2.44 Ibs/square foot i.Distributed weight of PV array on roof sections:. -Roof section l: (17)modules,(44)attachments 16.61 pounds per square foot vivint. sour 3. Electrical Components: A. Module (UL 1703 Listed) Qty Trina TSM 250-PA05.18 17 modules Module Spccs Pmax-nominal maximum power at STC - 250 watts Vmp-rated voltage at maximum power - 30.3 volts Voc-rated open-circuit voltage - 37.6 volts Imp-rated current at maximum power - 8.27 amps Ise-rate short circuit current - 8.85 amps B. Inverter (UL 1741 listed) Qty Enphase M215-60-2LL-S22 17 inverters Inverter Specs . 1. Input Data (DC,in) Recommended input power(DC) - 260 watts Max.input DC Voltage - 45 volts Peak power tracking voltage - 22V-36V Min./Max.start voltage - 22V/45V Max.DC short circuit current - 15 amps Max.input current - 10.5 amps 1. Input Data (DC in) Max.output power - 215 watts Nominal output current - 0.9 amps Nominal voltage - 240 volts Max.units per PV circuit - 17 micro-inverters Max.OCPD rating - 20 amp circuit breaker C.System Configuration Number of PV circuits 1 PV circuit 1 - 17 modules/inverters (20)amp breaker V.dinls solar D. Electrical Calculations 1.PV Circuit current PV circuit nominal current 15.3 amps Continuous current adjustment factor 125% 2011 NEC Amdc 705.60(B) PV circuit continuous current rating 19.125 amps 2.Overcurrent protection device rating PV circuit continuous current rating 19.125 amps Next standard size fuse/breaker to protect conductors 20 amp breaker Use 20 amp AC rated fuse or breaker 3. Conductor conditions of use adjustment(conductor ampacity derate) a.Temperature adder Average high temperature 38.4°C (101.12°F) Conduit is installed 1"above the roof surface Add 22°C to ambient 2011 NEC Table 310.15(B)(3)(c) Adjusted maximum ambient temperature 60.4°C (140.72°F) b.PV Circuit current adjustment for new ambient temperature Derate factor for 60.4°C (140.72°F) 71% 2011 NEC Table 310.15(B)(2)(a) Adjusted PV circuit continuous current 26.9 amps c.PV Circuit current adjustment for conduit fill Number of current-carrying conductors 3 conductors Conduit fill derate factor 100% 2011 NEC Table 310.15(B)(3)(a) Final Adjusted PV circuit continuous current 26.9 amps Total derated ampacity for PV circuit 26.9 amps Conductors(tag2 on 1-line)must be rated for a minimum of 26.9 amps THWN-2(90°C)#12AWG conductor is rated for 30 amps (Use#12AWG or larger) 2011 NEC Table 310.15(B)(t6) 4.Voltage drop(keep below 3%total) 2 arts: 1.Voltage drop across longest PV circuit micro-inverters (from modules to j-box) 2.Voltage drop across AC conductors(from j-box to point of interconnection) 1.Mirco-inverter voltage drop: 0.39% The largest number of micro-inverters in a row in the entire array is 9 inCircuit 1.According to manufacturers specifications this equals a voltage drop of 0.39%. 2. AC conductor voltage drop: =I x R x D (=240 x 100 to convert to percent) _ (Nominal current of largest circuit)x (Resistance of#12AWG copper)x (Total wire run) Total system voltage drop: # vivint. solar 2/26/2014 3587044 roof 1-Zepulator • .y ZepSolar Engineering Calculations 3587044 roof 1 Name: Street Address:2 Crowdis St. Email: Suite/PO#: Phone: City,State,Zip:Salem,Massachusetts Country:United States System Details Module Manufacturer Trina Solar Mounting System Zap Solar PV Module TSM-250-PA05.18 Manufacturer Quantity of PV Modules 17 Mounting System Type ZS Comp Array Size (kM 4.250 Roof type Composition Shingle Attachment Type Comp Mount,Type C Module-level Enphase Energy-M215-Z electronics http:/Mw ..zepulata.corrUprojmts/46T72Jsumna Vwgineering_print 1/4 I2/2&2014 3587044 roof 1-Zepulator } Engineering Calculations Design Variables Description (Symbol) Value Unit Module Orientation Landscape Module Weight 44.8 Ibs Average Roof Height(h) 15.0 ft Least Horizontal Dimension(Ihd) 17.0 ft Edge and Corner Dimension"a" 3.0 ft Roof Slope(8) 23.0 deg Rafter/Truss spacing 16.0 in Rafter/Truss dimension Min. nominal framing member depth of 4" Basic Wind Speed(V) 110 mph E)posure Category B Ground Snow Load(Pg) 40 - psf Risk Category I Topographic Factor(Kt) n 1.0 Thermal Factor for Snow Load(Ct) 1.2 E)qosure Factor for Snow Load (Ce) 0.9 Effective Wind Area 10 ft2 Snow Load Calculations (Using calculation procedure of ASCE 7-10 Chapter 7) Description (Symbol) Interior Edge Corner Unit Flat Roof Snow Load(Pf) 24.2 24.2 24.2 psf Slope Factor(Cs) 0.9 0.9 0.9 Roof Snow Load 20.7 20.7 20.7 psf Wind Pressure Calculations (Using simplified procedure of ASCE 7-10 Chapter 27) Description(Symbol) Interior Edge Corner Unit Net Design Wind Pressure uplift(Pnet30_up) -19.9 -34.7 -51.3 psf Net Design Wind Pressure downforce(Pnet3o darn) 12.5 12.5 12.5 psf http:/Mw ..zepulatm.corTVprgects/46772/sum ra enginmring_print 2/4 22612014 3587044 roof 1-Zepulator Adjustment Factor for Height and Exposure Category(A) 1.0 1.0 1.0 Design Wind Pressure uplift(Wup) -19.9 -34.7 -51.3 psf Design Wind Pressure downforce(Wdo n) 16.0 16.0 16.0 psf ASD Load Combinations (Using calculation procedure of ASCE 7-10 Section 2.4) Description(Symbol) Interior Edge Corner Unit Dead Load(D) 2.5 2.5 2.5 psf Snow Load(S) 19.0 19.0 19.0 psf Load Combination 1 (D+o.75*(0.6*Wduwn)+0.75*S) 22.7 22.7 22.7 psf Load Combination 2(D+0.6*Wdown) 11.9 11.9 11.9 psf Load Combination 3(D+S) 19.9 19.9 19.9 psf Uplift Design Load(0.6*D+0.6*Wvp) -10.5 -19.4 -29.4 psf MaAmum Absolute Design Load(Pabs) 22.7 22.7 22.7 psf Spacing Calculations Description(Symbol) Interior - Edge Corner Unit Max allowable spacing between attachments - 72.0 72.0 72.0 in User selected spacing between attachments given a rafter/truss spacing of 16.0 in 32.0 64.0 64.0 in Max cantilever from attachments to perimeter of PV array 24.0 24.0 24.0 in Distributed Weight and Weight per Attachment Point Calculations (In conformance with Solar ABC's Expedited Permit Process for PV System (EPP)) Description (Symbol) Value Unit Weight of Modules 761.6 Ibs Weight of Mounting System 95.7 Ibs ~ Total System Weight 857.3 Ibs Total Array Area 299.42 ftz Distributed Weight 2.86 psf Total Number of Attachments 44 Weight per Attachment Point 19.48 psf http:[A w ..zepulatu.con/projects/46772/sunmia Vmginmring_print 314 i 2/26/2014 3587044 roof 1-Zepulatcr r http:/Am .zepulator.can✓projects/46772/sunrmV'enginmringjxird M4 a) U G Uymm O JUNCTION BOX ATTACHED TO 3 E z ARRAY USING ZEP ZS-GAB TO E KEEP JUNCTION BOX OFF ROOF El O n z C yo - - - N PV Scu YSTEM SIZE: C I 4.25 kW DC i ~ G N (n I I 44 < g •e +� CIO :04. _0 L1I ---- -- -- - ----- - � yy OV INTERCONNECTION POINT, 17)Trina Solar TSM-250 PA05.18 MODULES WITH A J m n L LOCKABLE DISCONNECT SWITCH, Enohase M215-6D-21-L-S2x-ZC MICRO-INVERTER O o U ANSI METER LOCATION, MOUNTED ON THE BACK OF EACH MODULE n: U 8 UTILITY METER LOCATION > E E i u NK K N w , = z 0"OF 1-PVC CONDUIT ¢ < U 3 FROM JUNCTION BOX TO ELEC PANEL h m ¢ �¢ z z a SHEET NAME: F- J U) a SHEET NUMBER: + PV SYSTEM SITE PLAN • SCALE: 1/16"= 1'-0" 1 a a TA °o °o O N3CI) �h 0 w> mm az mo m m y m A u Ko 0O 00 C� Ty Ntt C 3 w z m c z z n Z L1 m Z y to O m y 0 N D G r cf) m w cl) m 0 0 n 0 r D z Z m 20 z0INSTALLER:VVINTSOLAR J� r Travassos Residence P\/ 10 my ROOF my INSTALLER NUMBER:1.97Z404.4129 �����5r �,F� i 2CrowdisSt. V L p MA LICENSE:MAHIC 170848 u ll Salem,MA 01970 PLAN DRAWN BY:Jerry S1 AR 35870, Last Modified:M612014 UTILITY ACCOUNT NUMBER:00872 05016 m U C in MOUNTING �ymw PV3. DETAIL M a m W16'61Bx1'STAINLESS LEVELING FOOT IZSLF STEEL M,TORQUE=19S1 fl{pa, OI, �/� NZ COMP MOUNT(ZSCMA) (n N m MARCH PACRAGEO WATERPROOFING SEPIA T WITH COMP MOUNT Q PV MODULE,TVP.MOUNT ASNEEQEO cu TO RAFTERS OF COMP. SHINGLE ROOF,PARALLEL WITH PLANE OF ROOF h PV ARRAY TYP. ELEVATION MP MINIMUM Z TORQUE STEELL, SLREW C TORQUE=13x]MEs. NOT TO SCALE ��\) +YA V B (LEVELING FOOT ON COMP MOUNT PERMITTED LEVELING NOT TO SCALE Fool SPACING •C= LEVELING FOOT(ZSLFB) J ' (�1 FRAMING BELOW SHOWN ry r OASHEOFORCLARITV I < ZEP COMPATIBLE a m P PV MO°ULE XVBRm INTERLOCI( m r I I 2 m 2 m CANTILEVER=U3 L=PERMITTED SPACING = a O LE$ GEE CODE COMPLIMICE LETTER FOR ALLOWABLE SPACING PHOTOVOLTAIC MODULE 1 2 Ij W W W m I I I I I 22am � o II I NTERLocH OlIU) REDID INTERLDCN NAMET LEVELING FOOT(ZSLFB) ROOFFRAMING � I1 LEVELING FOyIOT[ZS1FB) Z Q LU NTERLDDR,ZSILB, FERMI TT " SHEET "` PV SYSTEM MOUNT DETAIL FOOT SPADINGACING NUMBER' SCALE:318'=P-0- '� O (MODULES IN PORTRAIT/LANDSCAPE cli N0T'O SCALE a/ Inverter Ratings(Guide Section 4) wader Makorii Enpbaa.M21 S60­21_1_-sox Zc O Conduit and Conductor Schetlale MODULE DETAIL Mp Uc van pi ^' W__valre Tag Dozzarrrn wire Gaae. art camaarr. Candull Trpa Conduit sine U Max Power Q40•C zts watts up Nominel AC—mr, 240 Vdts 1 Enpbeae engage outs-THWN-2 12 ASS 4 NIb Fm•Nr N/P-Fme Nr Trine Solar TSM-250 PA05.76 Max AC U.nom 0.9 Amp. 1 Sam Capper Ground UGCIGEC) fiAWG 1 NIP-Free Nr NIP-Fren Pir P„ de SOLAR MODULE Max S.Rating 2.1 Amp. z Tharai I AWG ] PVc Iry-1• TY�I Max Number PanelyCtrwil 1i 2 THWN-2-Ground OAWG t PVC c, ySo ] TXWN-2 5AWG 3 PVC m, •,aa O 3 THWN-2-around 0AWG 1 PVC of V, mod+ NOTES FOR INVERTER CIRCUITS(Guide Section 8 and 9): N m m 1.)IF UTILITY REQUIRES A VISIBLE-BREAK SWITCH,DOES THIS PV Module Ratings @STC(Guide Section 5) �a<I SWITCH MEET THE REQUIREMENTS? o Z Z Model MakelModel TMa Solar TSM-250 PA05.ifi Enphase M21 Sfi0.2LL-52z-ZC YES NO %NA Max Pawer-Print Current(Imp) 7.89 Amps Ovz MICRO-INVERTER AT 0 hI—D 2.)IF GENERATION METER REQUIRED,DOES THIS METER Max Pawer-Point Vote,Vmp) 30.4 Vote 00 EACH MODULE,ATTACHED SOCKET MEET THE REQUIREMENTS? Open-Circuit Voltage(Von) 3Z2 Valls (n O WITH ZEE HARDWARE vES NO XNA O Short-Circuit Current(lac) 8.37 Amps r.� Q 3J SIZE PHOTOVOLTAIC POWER SOURCE(DC)CONDUCTORS Max Seen Fuse(OCPD) 15 Amps Co BASED ON MAX CURRENT ON NEC 690.53 SIGN OR OCPO Nominal Maximum Power at STC(Pmm) 240 Walls _ RATING AT DISCONNECT. Maximum System Voltage 10009ECy800(UL) j � ^ CU 4.)SIZE INVERTER OUTPUT ER CONDUCTORS ACCORDING Vac Temperature CoaRGenl -0.32 %/°C L #B BARE CU GROUND V TO INVERTER DICED AMPERE RATING(See Guide Section 9). (GROUNDING MODULE 5.)TOTALOF 1 INVERTER OLPD(s).ONE FOR EACH NOTES FOR ARRAY CIRCUIT WIRING(Guide Section 6 and 8 and Appendix D)' &INVERTER) PV CIRCUIT.II CES TOTAL SUPPLY BREAKERS COMPLY \� WITH 120%BUSBAR EXCEPTION IN 1.)Lowest expected ambient temperature based on ASHRAE minimum mean extreme NEC 591SHB)(2)(a)? RYES NO dry bulb temperaturefor ASHRAE location most similar to installation location: -19°C ICU MICROINVERTER CONNECTION , Signs(See Guide Section 7) 2,)Highest continuous ambient temperature based on ASHRAE highest month 2%dry bulb s"•_^` TO ENGAGE TRUNK CABLE temperature for ASHRAE location most similar to Installation location: 39-C Q Sign for Inverter DEED and AC Disconnect 3.)2005 ASHRAE fundamentals 2%design temperatures do not exceed 47-C in the United States(Palm Springs,CA is",I'CL For less than 9 current-carrying conductors Ln Solar PV System AC Point of Connection in mod-mounted sunlit Conduit at least 0.5"above mof and using the outdoor design AC Output Current 15.300000 Amps temperature of 47-C or less(ell of United States). Nominal AC Voltage 2401 Volta g)12 AWE,90-C conductors am generally acceptable for modules with lsc of 7.58 Amps � < or less when protected by a 12-Amp or smaller fuse. THIS PANEL FED BY MULTIPLE SOURCES m (UTILITY AND SOLAR) b.)10 AWG.90-C conductors are generally acceptable for modules with lsc of 9B Amps rl�� or less when protectedb a I 54orp or smaller fuse. •C zo 16 on ad •� m S o POINT OF DELIVERY a do in, INTERCONNECTION y do �a I . a! so > do C VISIBLE/LOCKABLE IVI Lu m H RO SREC/ANSI 'KNIFE'A/C Lu � z m `�GS'G1'O METER DISCONNECT c a J 3 PV CIRCUIT 1: 17 MODULES/PARALLEL Ra FF � 2aov/1zsA y y a O,t,�\TF P� - 1994�• LOAD-CENTER i 3 E a O,o\RAOR SHEET NAME: a \ 2 ✓a • • • S Ja `\ 211A W Q ` Z K ------ — ---- ------- ` J Q _____ ___ _ _______ \ VisionMeledng Siemens .i 2 ` V25-25 #LNF222R 1 3 60A 24DV SHEET E 1.0 JUNCTION E 1.0 `\ E 1.0 UNFUSED E 1.0 NUMBER: a - BOX NEMA3 O NOTE:NEUTRAL CONDUCTOR(S)OMITTED FOR CLARITY ALANVERIER OUTPUT CIRCUITS WILL HAVE A NEUTRAL CONDUCTOR LU