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PV-4.1 <br />ELECTRICAL CALCULATIONS <br />ALLOWABLE BACKFEED: <br />MAIN PANEL RATING = 225A <br />MAIN BREAKER RATING = 200A <br />120% RULE: = (MAIN PANEL RATING * 1.2) - MAIN BREAKER RATING <br />= (225A * 1.2) - 200A <br />= 270A - 200A <br />= 70A <br />ALLOWABLE BACKFEED = 70A <br />INVERTER OVERCURRENT PROTECTION: <br />INVERTER OVERCURRENT PROTECTION = (MICROINVERTER O/P CURRENT * <br /> # OF MICROINVERTERS) * CONTINUOUS LOAD (1.25) <br />= (1.35 * 30) * 1.25 <br /> = 40.50 * 1.25 <br />= 50.62A <br />PV OVERCURRENT PROTECTION = 60A ≥ 50.62A <br />ALLOWABLE BACKFEED 70A ≥ 60A PV OVERCURRENT PROTECTION <br />THE DESIGNED INTERCONNECTION MEETS THE 705.12(B)(3)(2) REQUIREMENTS. <br />OCPD CALCULATION <br />AMBIENT TEMPERATURE @ 32°C <br />WIRE SIZE CALCULATIONS <br />= 61.1A <br />= 50.62A <br />= 26.32A <br />= 18.56A <br />= 23.5A <br />= 18.56A <br />TAG 1: (AC) <br />REQUIRED CONDUCTOR AMPACITY (1.35 * 11 * 1.25) <br />CORRECTED AMPACITY CALCULATION (0.94 * 1 * 25) <br />18.56A < 23.5A (#12 AWG ENPHASE Q CABLE) <br />TAG 2: (AC) <br />REQUIRED CONDUCTOR AMPACITY (1.35 * 11 * 1.25) <br />CORRECTED AMPACITY CALCULATION (0.94 * 0.8 * 35) <br />18.56A < 26.32A (3/4" EMT, #10 AWG THHN/THWN-2, Cu) <br />TAG 3: (AC) <br />REQUIRED CONDUCTOR AMPACITY (1.35 * 30 * 1.25) <br />CORRECTED AMPACITY CALCULATION (0.94 * 1 * 65) <br /> 50.62A < 61.1A (3/4" EMT, #6 AWG THHN/THWN-2, Cu) <br />ELECTRICAL NOTES <br />1.CONDUCTORS EXPOSED TO SUNLIGHT SHALL BE LISTED AS SUNLIGHT RESISTANT PER <br />CEC 310.10(D). <br />2.CONDUCTORS EXPOSED TO WET LOCATIONS SHALL BE SUITABLE FOR USE IN WET <br />LOCATIONS PER CEC 310.10(C). <br />3.MAXIMUM DC/AC VOLTAGE DROP SHALL BE NO MORE THAN 2%. <br />4.ALL CONDUCTORS SHALL BE IN CONDUIT UNLESS OTHERWISE NOTED. <br />5.BREAKER/FUSE SIZES PER CEC 240. <br />6.AC EQUIPMENT GROUNDING CONDUCTOR SIZED PER CEC 250.122. <br />7.AMBIENT TEMPERATURE CORRECTION FACTOR IS BASED ON CEC 310.15(B)(1). <br />8.MAX. SYSTEM VOLTAGE COEFFICIENT IS FROM MODULE MANUFACTURER OR CEC 690.7 <br />WHEN MANUFACTURER COEFFICIENT UNAVAILABLE. <br />9.CONDUCTORS ARE SIZED PER CEC TABLE 310.16. <br />10. CONDUIT SHALL BE INSTALLED MINIMUM 7/8" FROM ROOF SURFACE. <br />AC WIRE SIZING CALCULATIONS BASED ON FOLLOWING EQUATIONS <br />REQUIRED CONDUCTOR AMPACITY: <br />INVERTER OUTPUT CURRENT * #OF INVERTERS = MAX CURRENT PER 690.8(A)(1)(e) * 125% <br /> = MAX CURRENT PER 690.8(B)(1) <br />CORRECTED AMPACITY CALCULATIONS: <br />DERATED CONDUCTOR AMPACITY PER 690.8(B)(2) = AMPACITY * TEMPERATURE DERATE <br /> FACTOR * CONDUIT FILL DERATE <br />DERATED CONDUCTOR AMPACITY CHECK : MAX CURRENT PER 690.8(B)(1) < <br /> DERATED CONDUCTOR AMPACITY <br />LICENSE TYPE: C-10 <br />NEXT PHASE ELECTRIC <br />APN: 09920301 <br />PHONE NUMBER: (661) 878-7576 <br />ADDRESS: 5409 ALDRIN COURT, <br />BAKERSFIELD, CA 93313 <br />ADDRESS: 5514 RHONDA AVENUE, <br />SANTA ANA, CA 92703 <br />COORDINATES: 33.750842, -117.941808 <br />CONTRACTOR INFORMATION <br />NAME: HIEP TRINH <br />CUSTOMER INFORMATION <br />PROJECT ID AUR-1002094 <br />DATE 10/3/2024 <br />CREATED BY SSB <br />SIGNATURE <br />LICENSE NUMBER: 1025263 <br />12.150kW DC / 9.750kW AC / 11.012kW <br />CEC AC ROOF MOUNT PV SYSTEM <br />5514 W Rhonda <br />Ave11/27/2024