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3920 Watt to 10080 Watt DC Photovoltaic System Electrical Diagram Solaredge SE 760OA-US Inverter with OOO One to Two strings of Solarworld SW280 Modules and Solaredge P300 Optimizers To verter Optional Supply Side Connection Maximum 18 modules per NEC 705.12A Solarworld 10 string and minimum 8 modules L+ SW280 SW p1a per string as per Solaredge N M Modules 280 ��#s bare copy olaredge P300 GEC (3)#6 utility meter ower Op timizers THHNrrHWN-2 zaop - 314"PVC condu < (4)#10 AWG PV wire 2-B,2-R Module power ptimizer so A fused (1)#6 Bare Copper I Faca Facto Cable disconnect with DC e ds Solarworld SW280 40Afuses eastag MafnDistribution Module Specs ej ,o panel Solaredge P300 Power Optimizer SW Max input power:300 Wp-dc Pmax:280Wp Y80 #8 Max.Input DC Voltage:48 VDC Voc: 39.5 V 200A Panelboard Max Input current: 12.5A Vmpp:31.2 V with 200A main MPPT Range.8-48 VDC Isc: 9.71 A Max output Voltage.60 VDC Im 9.07 A breaker Max Output current: 16A pp' O200A-2 Notes: All work to meet or exceed NEC 2011 Olunction box to be located within the array boundary. Junction box must be minimum Noma 311 UL listed O OO enclosure.Free air conductors must be installed in raceway if readily accessible as per 690.31(A).(4)#10 AWG THHN/THWN-2 Orhe minimum volume of the Noma 311 enclosure for the transition of PV wire to THWN-2 wire shall be O (1)#8 AWG THHN/THWN-2 42 cubic inches. Heyco 5 wire Masthead gland seals or similar connector are required as strain relief Nema 3R 2-B,2-R,1-G for PV wire into Noma 311 junction box at array. O 40A/2 Junction 3!4"EMT,FMC(inside structure) Ointerconnection with 40 Amp 2 pole OCPD via 2011 NEC 705.12(D)(2)Load Side Connection. The 40 A Box LFNC,PVC(outside structure) backfed breaker must be located at the opposite end of the bus from the 200 A main supply breaker i 690.31E 4O.The required PV Backfed breaker plus the main breaker rating must be less than or equal to 120%of the Main service bus rating. 705.12(D)(2) ' Solaredge SE760OA-US bOOptional Supply Side connection via 705.12A using parallel line taps in a NEMA 311 box(as required) Transformerless Inverter with i Dc using NSI IPCS4002, llsco IPC-KUP-L or NSI Tork IPLD 310-3 Multi-Tap Connector or equivalent. existing n Ac integrated DC disconnect. OPV service disconnecting means for"optional"supply side connection must have neutral/EGC bond grounding ! Lt1 within and must be listed as"suitable for use as service equipment." 230.66 electrode ; ! (4)#8 AWG THHN/THWN-2 OThe fuses in the disconnect for the"supply side"option must be rated to handle the maximum short- 1-B,1-R,1-W,1-G circuit current available at the supply terminals.110.9,110.10 Over-current protection for the supply side 3/4"EMT,FMC LFNC A ; connected conductors shall be located within 10 feet of the connection to the service. 705.31 0 0 or PVC 8OI he following label is required on meter can and main panelboard"Service 4' is fed from dual power sources.Utility and Photovoltaic system" ' 8. 'PV input Do not relocate this OCPD"label required adjacent to backfed breaker. 705.12(d)(7) (4)#8 AWG THHN/THWN-2 10 Bonding of module to rail and module to module accomplished through WEEB 1-B,1-R,1-W,1-G washers or self grounding mid-clamps. 3/4"EMT,FMC,LFNC,or PVC S.-Warning:DC conductors of this system are ungrounded and may be energized"required on the DC Disconnect 690.35F 12.."Warning:Photovoltaic Power Source"label required on conduit per 690.31 (E)(3)(4) 13.Total voltage drop%for all circuits based on listed conductors is 1.64%based on: A 100 foot round trip en PV wire o air run to Noma 3R junction box If required by Utility p 60A 240V AC Disconnect with label, 11 B.150 round trip source circuits(THWN-2)to termination in DC disconnect On-site Utility Generation C.30 feet round trip Inverter Output circuit to point of interconnection. Disconnect Switch DC Disconnect Label D.Conductors should be sized for max 2%voltage drop to decrease possible Requirements inverter shutdown and production losses due to AC voltage rise at the inverter. - Vmpp 350 vdc PV AC Disconnect Label Requirements Vmax 500 vdc fdivided mula to figure IMPP for DC Disconnect Operating Current: 32A Impp 11.2 to 23 A(based on array l STC DC power rating of array in Watts Operating Voltage: 240V nameplate rating) by 360 Vdc equals IMPP in Amps. Imax 15 or 30 A (1 or 2 strings) 920 wattsl350 Vdc=11.2 Amps