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SHEET NAME <br />SHEET SIZE <br />SHEET NUMBER <br />ANSI B <br />11" X 17" <br />Signature with Seal <br />PROJECT NAME & ADDRESS <br />ESPV-4B <br />DATE: 09/26/2024 <br />61 <br />7 <br /> S <br /> <br />B <br />R <br />O <br />A <br />D <br />W <br />A <br />Y <br />, <br />SA <br />N <br />T <br />A <br /> <br />A <br />N <br />A <br />, <br />CA <br /> 92 <br />7 <br />0 <br />1 <br />, <br /> <br />U <br />S <br />A <br />ZA <br />B <br />A <br />L <br />E <br />T <br />A <br />, <br /> <br />G <br />R <br />A <br />C <br />I <br />E <br />L <br />A <br />RE <br />S <br />I <br />D <br />E <br />N <br />C <br />E <br />PH <br /> <br />N <br />O <br />. <br /> <br />(9 <br />4 <br />9 <br />) <br /> <br />3 <br />0 <br />3 <br />- <br />9 <br />0 <br />9 <br />3 <br />REVDATEDESCRIPTION <br />REVISIONS <br />EM <br />A <br />I <br />L <br /> <br />I <br />D <br />: <br /> <br />za <br />v <br />a <br />l <br />e <br />t <br />a <br />p <br />3 <br />4 <br />8 <br />@ <br />g <br />m <br />a <br />i <br />l <br />. <br />c <br />o <br />m <br />SUNNOVA ENERGY <br />CORPORATION <br />20 GREENWAY PLAZA, SUITE 475 <br />HOUSTON, TX 77046 <br />P: 281.985.9900 <br />L: 1003498 <br />A08/24/2024REVISION <br />B09/26/2024REVISION <br />ELECTRICAL <br />SPECS CALCS. <br />PERCENT OF VALUES NUMBER OF CURRENT <br />CARRYING CONDUCTORS IN EMT <br />0.80 4-6 <br />0.70 7-9 <br />0.50 10-20 <br />AMBIENT TEMPERATURE SPECS <br />RECORD LOW TEMP -2°C <br />AMBIENT TEMP (HIGH TEMP 2%)31°C <br />CONDUIT HEIGHT 0.5" <br />ROOF TOP TEMP 90°C <br />CONDUCTOR TEMPERATURE RATE 53°C <br />MODULE TEMPERATURE COEFFICIENT OF VOC -0.27%/K <br />INVERTER SPECIFICATION <br />MANUFACTURER / MODEL <br />ENPHASE IQ8PLUS-72-2-US <br />(240V) MICROINVERTERS <br />MAX DC SHORT CIRCUIT CURRENT 25A <br />CONTINOUS OUTPUT CURRENT 1.21A (240V) <br />SOLAR MODULE SPECIFICATIONS <br />MANUFACTURER / MODEL <br />CANADIAN SOLAR CS6R-395MS-HL <br />(395W) <br />VMP 30.6 V <br />IMP 12.91A <br />VOC 36.6V <br />ISC 13.77 A <br />TEMP. COEFF. VOC -0.26%/°C <br />MODULE DIMENSION 67.8"(L) x 44.6"(W) <br />PANEL WATTAGE 395W <br />VRise = (amps/inverter × number of inverters) × (resistance in Ω/ft) × <br />(2-way wire length in ft) <br />= (1.21 amp ×12 ) × (0.00129 Ω/ft) × (30ft × 2) <br />= 14.52 amps × 0.00129 Ω/ft × 60 ft <br />= 1.12 volts <br />%VRise = (1.12 volts ÷ 240 volts) x 100 = 0.46% <br />The voltage rise from the Junction Box to the IQ Combiner Box 4 is 0.46% <br />Voltage rise from the Junction Box to the IQ Combiner box 4 <br />Voltage rise in Q Cable from the Microinverters to the Junction Box <br />For branch circuit #1 of 12 IQ 8PLUS Micros, the voltage rise on the 240 VAC Q <br />Cable is 0.65 % <br />Voltage rise from the IQ Combiner box 4 to Non Fused AC Disconnect <br />VRise = (amps/inverter × number of inverters) × (resistance in Ω/ft.) × (2-way wire length in ft.) <br />= (1.21 amp × 12) × (0.00129 Ω/ft) × (5 ft. × 2) <br />= 14.52 amps × 0.00129 Ω/ft × 10 ft. <br />= 0.18 volts <br />%VRise = (0.18 volts ÷ 240 volts) x 100 =0.07% <br />The voltage rise from the IQ Combiner Box 4 to Non Fused AC Disconnect is 0.07% <br />Total system voltage rise for all three wire sections <br />0.65% + 0.46% + 0.07% + 0.07%+ 0.10% + 0.10% = 1.45% <br />Voltage rise from the Non Fused AC Disconnect to Load Center <br />VRise = (amps/inverter × number of inverters) × (resistance in Ω/ft.) × (2-way wire length in ft.) <br />= (1.21 amp × 12) × (0.00129 Ω/ft) × (5 ft. × 2) <br />= 14.52 amps × 0.00129 Ω/ft × 10 ft. <br />= 0.18 volts <br />%VRise = (0.18 volts ÷ 240 volts) x 100 =0.07% <br />The voltage rise from the Non Fused AC Disconnect to Load Center is 0.07% <br />Voltage rise from the Load Center to AC Disconnect <br />VRise = (amps/inverter × number of inverters) × (resistance in Ω/ft.) × (2-way wire length in ft.) <br />= ((1.21 amp × 12)+(1 amp × 16)) × (0.000809 Ω/ft) × (5 ft. × 2) <br />= 30.52 amps × 0.000809 Ω/ft × 10 ft. <br />= 0.24 volts <br />%VRise = (0.24 volts ÷ 240 volts) x 100 =0.10% <br />The voltage rise from the Load Center to AC Disconnect is 0.10% <br />Voltage rise from the AC Disconnect to MSP <br />VRise = (amps/inverter × number of inverters) × (resistance in Ω/ft.) × (2-way wire length in ft.) <br />= ((1.21 amp × 12)+(1 amp × 16)) × (0.000809 Ω/ft) × (5 ft. × 2) <br />= 30.52 amps × 0.000809 Ω/ft × 10 ft. <br />= 0.24 volts <br />%VRise = (0.24 volts ÷ 240 volts) x 100 =0.10% <br />The voltage rise from the AC Disconnect to MSPis 0.10% <br />617 S Broadway <br />2/25/2025