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3920 Watt to 70080 Watt DC Photovoltaic System Electrical Diagram Solaredge SE 7600A-US Inverter with OOO One to Two strings of Solarworld SW280 Modules and Solaredge P300 Optimizers ro verter Optional Supply Side Connection Nec 7os.12A Maximum 18 modules per Solarworld 10 string and minimum S modules �+ SW280 2 0 �� 1e per string as per Solaredge N MO Modutes olaredge P300 #6 6aze copp cec (a�s s Utllity meter ower Optimizers 7HHWiHWN-z zoon \t, 3/4"PVC condu (4)#10 AWG PV wire 2-B,2-R Module power ptimlzer so A fused 1 dfsconnect with — (1)#6 88re Copper Factory Facto Cable 40 A fuses exlstin Maln Dishibution DC leads S018fWOfld SW280 e��9 Panel Solaredge P300 PowerOptimizer MOduleSpeCs gyy Max input power:300 Wp-dc Pm87c:280Wp Zgp #8 Max.input DC Voltage:48 VDC Voc: 39.5 V 200A Panelboard Max inputcurrent: 12.6A Vmpp:31.2 V MPPT Ran e:5-48 VDC with 200A main Maz Output Voltage:60 VDC �mpp9'910�A breaker Max Output current: 15A O200A-2 Notes: All work to meet or exceed NEC 2011 O1O.lunction box to be located within the array boundary. Junction box must be minimum Nema 3R UL listed 4 enciosure.Free air conductors must be installed in raceway if readily accessible as per 690.31(A). OO (4)#10 AWG THHN/THWN-2 2Of'he minimum volume of the Nema 3R enclosure for the transition of PV wire to THWN-2 wire shall be O$ (1)#8 AWG THHN/THWN-2 4Z cubic inches. Heyco 5 wire Masthead gland seals or similar connector are required as strain relief Nema 3R Z-B�2-R,1-G for PV wire into Nema 3R junction box at array. O40A/2 � JunCtion 3/4"EMT,FMC(inside structure) Olnterconnection 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 � 690.31E 4O.'i'he 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 SE7600A-US OOptional Supply Side connection via 705.12A using parallel Iine taps in a NEMA 3R box(as required) � '� oc Transformerless Inverter with using NSI IPCS4002, Ilsco IPC-KUP-L or NSI Tork IPLD 3/0-3 Multi-Tap Connector or equivalent. existing � • I,I Q� integrated DC disconnect. OpV service disconnecting means for"optional"supply side connection must have neutral/EGC bond roundin ��J g g � � (4)#8 AWG THHN/THWN-2 W�thin and must be listed as"suitable for use as service equipment." 230.66 electrode � 7�. The fuses in the disconnect for the"supply side"option must be rated to handie the maximum short- � , � ' 7-B,1-R,1 W,i-G `� � ; circuit current available at the supply terminals.110.9,110.10 Over-current protection for the supply side \_;__. ; 3!4"EMT,FMC,LFNC, U � ' ' or PVC connected conductors shall be located within 10 feet of the connection to the service. 705.31 � 8O. The following la6el is required on meter can and main panelboard"Service ' � ` is fed from dual power sources Utility and Photovoltaic system" � � . _ O. 'PV input Do not relocate this OCPD"label required adjacent to backfed breaker. 705.12(d)(7) (4)#8 AWG THHNITHWN 2 10 Bonding of module to rail and module to modufe accomplished through WEEB 7-B,1-R,1-W,1-G washers or self groUnding mid-clamps. 3/4"EMT,FMC,LFNC,or PVC 11. "Warning:DC conductors of this system are ungrounded and may be energized"requlred on the ' DC Disconnect 690.35F 12.."Warning:Photovoltalc 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: If required by Utility A.100 foot round trip PV wire open air run to Nema 3R junction box 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 Dlsconnect 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 Operating Current:32A Fortnula to figure IMPP for DC Disconnect Impp 11.2 to 23 A(based on ar�ay otal STC DC power rating of array In Watts Operating Voltage:240V nameplate rating) divided by 3so Vdc equals IMPP in Amps. Imax 15 or 30 A (1 or 2 strings) ex:3920 watts/350 Vdc=11.2 Am s �—