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Single Line Diagram <br />(4) #10 THWN-2 & (1) #8 AWG <br />THWN-2 Ground <br />(See 2010 CEC Table 250.122 <br />Conductors in 3M" EMT Conduit <br />Min. <br />(4) #10 USE-2 Conductors <br />(See Amp. Calc. A) <br />& (1) #8 Bare Copper Ground <br />(See 2010 CEC Table 250.122 <br />(2) #10 (Ll,L2,) THWN-2 Conductors <br />(See Amp. Calc. B) & (1) #8 AWG THWN-2 <br />Ground in 3/4" EMT conduit min. <br />(See 2010 CEC Table 250.122) <br />Max. OCPD:(200A Bus) * (1.2)= 240A Max Rating (120% of Bus) < <br />PV Backfeed (20A) + Main Breaker (200A) = (220A) S 240A 60 CE <br />See 690.64 (B)(2) of 2010 CEC DE <br />200A Rated Bus NOTE: /fthe existing main service <br /><O <br />panel has the main breaker located 5%in the middle of the buss bar, then -E %\- the maximum combined overcurrent (0 < C. <br />(MSP)devices allowed is 100 percent of the owe <br />·bussbafrating,···net.120-percent- -.Z g g <br />*3@ <br />PANEL TO BE UPGRADED TO <br />200A Main 200A RATED BUS <br />120/240V <br />0 <br />tNERGY EEN, GO SO <br />bMA <br />BE <br />0- U.1 <br />Ssajppv 1!e <br />(17) ReneSola JC250M-24/Bb Panels <br />MPPT 1 MPPT 2 <br />Input 1:9@ 180° S Input 2: 8 @ 180° S <br />**Modules individually lugged on <br />continuous ground in the event of a <br />panel being removed from array** <br /> JB ------ INV -r----1/ <br />J New W.1- AC -- £_ 20A I <br />OCPD 1 <br />-1 <br />If the existing Main Service Panel <br />does not have verifiable ground <br />electrode. It is the PV contractors <br />responsibility to install a <br />supplemental grounding electrode <br />1 <br />1 <br />LEGEND <br />--- <br />-- <br />LABELS PER INVERTER <br />PV DC Disconnect <br />DISCONNECT RATINGS <br />Operating Current 16.58A <br />Operating Voltage Vmp 271.8V DC Disconnect Ratings <br />Max- System Voltage Voc 382.69 V Disconnect SW Rating= 30A <br />Short Circult Current 20A Max Disconnect Volt Rating = 600V <br />AC Output Current x 125% <br />AC Disconnect Ratings <br />AC Disconnect Disconnect SW Rating = 30A <br />AC aitput Current 16A Disconnect Voltage Rating = 240V <br />Norrinal AC Voltage 240V <br />Junction Box <br />r--- AC Disconnect "Knife Blade Type" <br /> AC Per NEM 6.3 & NEC 690.17 <br />1-iNV-1 Power One PVI-3.6-OUTD-S-US <br />- Inverter with Intergral DC Disconnect <br />E =11=tr <br />lial Main panel & Utility Electrical Service <br />- (14)200A Main/ 200A Bus <br />DC & AC Calculations Ampacity Calculations General Notes: <br />System DC Wiring (Strings of 9) <br />Vmpp = (30.2Vdc mpp) * (9 Panels) = 271.8Vdc <br />Voc= (37.3Voc) * (9 Panels) = 335.7Vdc <br />Vmax= (335.7) * (114%)= 382.69Vdc <br />A) PV to Inverter <br />\Mre Ampacity Thermal Derate Fact¤r Number of Conductors <br />2010 CEC (310.16)(CEC 310.16)CEC 310.15(B)(2)(a) <br />#10 USE-2, 90 degrees C 50 + (22) degrees C (4-6) Max <br />310.15(8*3*c) <br />1. (17) ReneSola JC250M-24/Bb Modules: (250) Watt Modules wired and listed to UL1703 standards <br />2. (1) Power One PVI-3.6-OUT[)-S-US Inverter. Attached with system electrical specifications and ground fault protected & listed tc <br />UL1741 standards. <br />System DC Wiring (Strings of 8) <br />Vmpp = (30.2Vdc mpp) * (8 Panels) = 241.6Vdc <br />Voc= (37.3Voc) * (8 Panels) = 298.4Vdc <br />Vmax= (298.4) * (114%)= 340.17Vdc <br />*Proiected Minimum String Voltage <br />{30.2 V - ((25°C - (28°C + 22°C)) * -0.0029)} = 30.12V <br />(30.12\4 * (String of 9) = 271.14 V @ Avg High Temp: 28° C <br />(40 Amps)*(0.58) *(0.80) <br />(40 Amps) • (0.58) * (0.80) = 18.56A > PV A-design (13.79A1 <br />B) Inverter to Main Service Panel <br />Wire Ampacity Thennal Derate Factor Number of Conductors <br />2010 CEC (310.16)(CEC 310.16)CEC 310.1(BX2Xa) <br />#10 ™WN-2, 90 degrees C 50 degrees C (3) Max <br />(40Amps)*(0.82) *(1.00) <br />3. Photovoltaic system ground will be tied into existing ground at main service from DC DisconnecVInverter as per NEC Sec. <br />250.166(B). "The Grounding Electrode Conductor shall not be smaller than the largest conductor supplied by the system and not <br />smaller than #8AWG." <br />4. Equipment operating 150 volts or greater shall only be serviced or replaced by· qualified personnel. Field protection may be in <br />the form of conduit, closed cabinet or an endosure which requires use of tools to open. <br />5. Solar Photovoltaic System equipment will be installed in accordance with requirements of Art. 690 of the 2010 CEC. <br />Imp = (8.29A) * (1 String) = 8.29A <br />Isc = (8.84A) * (1 String) = 8.84A <br />A-design = (8.84A) * (1.56) = 13.79A --> USE-2 #10 <br />(40Amps) 90.82) ' (1.00)=32.8A > PV B-design (20A) <br />6.Minimum height of conduit above roof to match temperature derating factor. <br />7.Photovoltaic dc conductors entering the building shall be installed in metal conduit AND THE CONDUIT SHALL BE LABELED <br />"CAUTION DC CONDUIT' OR EQUIVALENT EVERY 5 FT. <br />System AC Wiring <br />Pmax= (227.9 PTC Rating) * (17 Panels) * (96% Inv. eff.) = 3719.32 Wac <br />Imp= (3719.32 Wac) / (240Vac) = 15.49A <br />Inverter Maximum Output Current = 16A <br />B-design = (16A) * (1.25) = 20A #10 THWN-2 (20A C/B) <br />8. System Grounding Electrode conductor for PV system to be sized to meet the requirements of both 250.66 (AC) and 250.66 <br />(DC), 690.47(C) not smaller than #8 CU AWG. <br />9. If the existing main service panel does not have a ground rod or ufer, it is the pv contractors responsibility install one. <br />10. SMOKE ALARMS AND CARBON MONOXIDE DETECTORS WILL MEET THE NECESSARY REQUIREMENTS PER CRC <br />Project GoldenR314, R315 <br />Sheet <br />11. UTILITY COMPANY WILL BE NOTIFIED PRIOR TO ACTIVATION OF THE SOLAR PV SYSTEM.Date 12/3/2013 <br />Scale As Noted <br />INU. <br />neviblul W Izhuc <br />W.US <br />i/ <br />Drawn <br />By MTL