34 Summer Street - Salem-PlansetAAA24/7 ACCESSIBLE AND LOCKABLEAC DISCONNECTRoof 1Azimuth: 174° N Tilt: 35°Solar Access: 90%15 Modules - 1.2562" Snow GuardSnow PadsAwww.bostonsolar.us | info@BostonSolar.usDrawing Name:Date:Drawn By:Reviewed By:Rev #:Scale:Client Information:Salem, MA 0197034 Summer Street(720) 587-99433/32" = 1'-0"01NPJune 16, 2020Site PlanJessica BombardierSystem InformationModule:Inverter:Racking:System Rating:System Rating:MA CMR 780 51.00IBC-2015, ASCE 7-102005 NDS, NEC-2020Ground Snow Load:Wind Speed:Design Factors127 MPH50 PSFSnapNrackEnphase IQ7+(15) LG 360 Q1K4.35 kWac5.40 kWdcNPV - 1.1Vector Structural Engineering has reviewed the existing structurewith loading from the solar array and lag screw connections to theexisting framing. The design of the racking system, connections,and all other structure is by others. Mechanical, architectural, andall other nonstructural aspects of the design are by others.Electrical is by others, unless stamped by Dean Levorsen.VSE Project Number: U1876.1774.20106/22/2020S.
133"323"12"468"8"
135"45"
188"
56"45"
23"20"30"48"Cantilever Maximum AllowableSpacing35°3"x5" True Cut @ 30"oc69"Unknown128"PartiallyVaulted1"x6" True Cut15.7"7.9"4.7"4.7"14'Install note: The allowable raillocation for portrait isdetailed above. The bottomdimension is from the edge ofthe panel to the start of theallowable range. The topdimension is from the panel edgeto end of the allowable range.Install note: The allowable raillocation for landscape isdetailed above. The listeddimension is from the edge ofthe panel to the opposite edgeof the rail. The rail must beinstalled within this 4.7" span.www.bostonsolar.us | info@BostonSolar.usDrawing Name:Date:Drawn By:Reviewed By:Rev #:Scale:Client Information:Salem, MA 0197034 Summer Street(720) 587-9943As Noted01NPJune 16, 2020Array LayoutJessica BombardierArray Area:Array Weight:Array Dead Load:# of MountsArray Point Load:# of Modules:Array Information1542278.75 sq. ft.680.84 lbs.2.44 lbs./sq.ft.6.64 lbs.Rafter Spacing:Max. Rafter Span:Rafter Size:Roof Material:Exposure Catagory:Structure InformationRoof Pitch:Decking:Building Height:3"x5" True Cut30" OC128"35°PlankAsphalt ShingleC25'PV - 2.1Attachment DetailLag BoltRafterSolar ModuleSnapNrack UR-40RailDeckingSnapNrack Umbrella L-FootSnapNrack FlashingWeight:Type:Model:Racking SpecificationsFlush Mount0.52 Lbs/FtSnapNrackAArray Layout (R1)Scale: 1/8" = 1'-0"BStructure Elevation (R1)Scale: N.T.S.·Maximum Allowable Cantilever (Portrait) = 23"·Maximum Allowable Cantilever (Landscape) = 28"·If you are unable to maintain the maximum allowable railcantilever of 23" and 28" for Portrait and Landscapeorientations, respectively, please use the included deckingattachments on the array ends.Weight:Dimensions [LxWxH]:Model:Module SpecificationsLG 360 Q1K39.68 Lbs40"x66.9"x1.57"Install Notes (R1)CVector Structural Engineering has reviewed the existing structurewith loading from the solar array and lag screw connections to theexisting framing. The design of the racking system, connections,and all other structure is by others. Mechanical, architectural, andall other nonstructural aspects of the design are by others.Electrical is by others, unless stamped by Dean Levorsen.VSE Project Number: U1876.1774.20106/22/2020S.
Non-Fusible60A SwitchPV UtilityDisconnect(3) #10 THWN-2 Wire(1) #10 THWN-2 Ground1" EMTUtilityMA SMARTGeneration MeterMLineLoadL1L2M Load CenterUtility ServiceMeter# Load CenterGNDNEU25A200A21 239 430200A(3) #10 THWN-2 Wire(1) #10 THWN-2 Ground1" EMTSolaDeck-PassThrough BoxEnphase Q Cable#6 Bare Copper Ground(4) #10 THWN-2 Wire(1) #10 THWN-2 Ground1" EMT OutdoorIQ7+IQ7+IQ7+12Micro-Inverters in Parallel *8IQ7+IQ7+IQ7+12Micro-Inverters in Parallel *7L1L220AEnphase CTsMonitoring CableL1L2GNDNEU10AIQENVOYEnphase IQ Combiner 3125A Rating(3) #10 THWN-2 Wire(1) #10 THWN-2 Ground1" EMT24/7 ACCESSIBLE AND LOCKABLEAC DISCONNECT20Awww.bostonsolar.us | info@BostonSolar.usDrawing Name:Date:Drawn By:Reviewed By:Rev #:Scale:Client Information:Salem, MA 0197034 Summer Street(720) 587-9943N.T.S.01NPJune 16, 2020Line DiagramJessica BombardierPV - 3.1Design Conditions BOSTON LOGAN INT'L AIRPORTAnnual extreme high temperature (0.4%) : 35°C2% Average high temperature: 32°CAnnual extreme low temperature: -17°CTemperature at 3.5" above roof: 49°C*Center-Feed micro-inverters strings to minimize voltage rise, as indicated on site-plan.Solar ModuleLG 360-Q1K-V5Voltage Max Power (VMPP)36.7VCurrent Max Power (IMPP)9.82AShort Circuit Current (ISC)10.50AOpen Circuit Voltage (VOC)43.3VDC Rating 5.40 kWdcAC Rating 4.35 kWacNormal Operating Voltage240VContinuous Output Current18.2AEnphase IQ7+Max Input DC Voltage60VMax Input Current (Isc)15AMax Cont. Output Current1.26AMax Output Power290VAMax Per String13
www.bostonsolar.us | info@BostonSolar.usDrawing Name:Date:Drawn By:Reviewed By:Rev #:Scale:Client Information:Salem, MA 0197034 Summer Street(720) 587-9943N.T.S.01NPJune 16, 2020Wire CalculationJessica BombardierPV - 3.2AC CONDUCTOR AMPACITY CALCULATIONS:FROM PV LOAD CENTER TO INTERCONNECTION# OF INVERTERS: 15EXPECTED WIRE TEMP (°C): 32°TEMP CORRECTION PER NEC TABLE 310.16: 0.96CIRCUIT CONDUCTOR SIZE: 10 AWG# OF CURRENT CARRYING CONDUCTORS: 3CONDUIT FILL PER NEC 310.15(B)(2)(a): 1CIRCUIT CONDUCTOR AMPACITY: 35 AREQUIRED CIRCUIT CONDUCTOR AMPACITY PER NEC 690.8(B):1.25 X # Micro-Inverters X 1.21 A =1.25 X 15 X 1.21 = 22.69 ADERATED AMPACITY OF CIRCUIT CONDUCTORS PER NEC TABLE 310.16:TEMP CORR. PER NEC 310.16 XCONDUIT FILL CORR. PER NEC 310.15(B)(2)(a) XCIRCUIT CONDUCTOR AMPACITY =0.96 X 1 X 35 = 33.60 AAC CONDUCTOR AMPACITY CALCULATIONS:FROM JUNCTION BOX TO PV LOAD CENTERAMBIENT TEMPERATURE ADJUSTMENT FOR EXPOSED CONDUITPER NEC 310.15(B)(2)(c): + 17°EXPECTED WIRE TEMP (°C): 32° + 17°TEMP CORRECTION PER TABLE 310.16: 0.82# OF CURRENT CARRYING CONDUCTORS: 4CONDUIT FILL CORRECTION PER NEC 310.15(B)(2)(a): .80CIRCUIT CONDUCTOR SIZE: 10 AWGCIRCUIT CONDUCTOR AMPACITY: 40 AREQUIRED CIRCUIT CONDUCTOR AMPACITY PER NEC 690.8(A&B):1.25 X 1.25 X # Micro-Inverters (Max. String Length) X Isc1.25 X 1.25 X 8 X 1.21A = 15.13 ADERATED AMPACITY OF CIRCUIT CONDUCTOR PER NEC TABLE 310.16TEMP CORR. PER NEC TABLE 310.16 XCONDUIT FILL CORR. PER NEC 310.15(B)(2)(a) XCIRCUIT CONDUCTOR AMPACITY =0.82 X 0.80 X 40 = 26.24 A