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BACKUP LOADS <br />LOAD BREAKER RATING <br />(AMPS)LABEL DEMAND <br />LOAD <br />1 15A-1P DINNING LIGHTS 1500 W <br />2 20A-1P LIGHT TRANSFORMER 1500 W <br />3 20A-1P LIGHT GFI PLUGS 1500 W <br />4 20A-1P BATH HEATER 1500 W <br />5 20A-1P KITCHEN PLUGS 1500 W <br />6 20A-1P BATH HEATER 1500 W <br />7 20A-1P LAUNDRY 1500 W <br />8 20A-1P DINNING 1500 W <br />9 20A-1P TV VCR 1500 W <br />10 20A-1P MSTR BED 1500 W <br />11 20A-1P BED2 1500 W <br />12 20A-2P HEATER 3840 W <br />13 50A-2P RANGE 9600 W <br />14 60A-2P AC 11520 W <br />15 100A-2P SUB PANEL 19200 W <br />INVERTER CALCULATIONS <br />EACH INVERTER HAS THE FOLLOWING VALUES WHICH ARE CALCULATED FOLLOWING THESE <br />FORMULAS: <br />INVERTER X: <br />•MAX DC CIRCUIT CURRENT = (MODULE ISC) X (HIGH IRRADIANCE)(690.8(A)(1)(A)) <br />•MAX AC OUTPUT CURRENT = (MAX INVERTER OUTPUT) <br />•OCPD NEEDED = (MAX AC OUTPUT CURRENT) X 1.25 <br />•SYSTEM CHARACTERISTICS: <br /> •OPERATING VOLTAGE = (MODULE VMP) X (# MODULES / STRING) <br /> •MAX OPEN CIRCUIT VOLTAGE = {[((TEMP COEF VOC) X (VOC)) / 100] X (LOW TEMP - STC TEMP) + VOC} * <br />(# MODULES / STRING) <br /> •OPERATING CURRENT = (MODULE IMP) X (# STRINGS) <br /> •SHORT CIRCUIT CURRENT = 1.25 X (MODULE ISC) X (# STRINGS) <br />INVERTER POWERWALL 3 1707000-XX-Y <br />•MAX DC CIRCUIT CURRENT = 17.87A <br />•MAX AC OUTPUT CURRENT = 48A <br />•OCPD NEEDED = 60A <br />•SYSTEM CHARACTERISTICS: <br /> •OPERATING VOLTAGE = 334.1V <br /> •MAX OPEN CIRCUIT VOLTAGE = 414.96V <br /> •OPERATING CURRENT = 52.68A <br /> •SHORT CIRCUIT CURRENT = 71.47A <br />COMBINDED INVERTER OUTPUT: <br /> •MAX AC OUTPUT CURRENT = 96 <br /> •OCPD NEEDED = 100 <br />ALLOWABLE BACKFEED: <br /> MAX ALLOWED TOTAL GENERATION BACKFEED OCPD = <br /> MAIN BREAKER RATING = 200 A <br /> 125 A ≤ 200 A → INTERCONNECTION <br /> MEETS CEC 2022 705.13 REQUIREMENTS <br />WIRE CALCULATIONS <br />WIRE AMPACITY CALCULATED FROM CEC 310.16/310.17 AS APPROPRIATE WITH AMBIENT TEMPERATURE <br />CALCULATIONS FROM CEC 310.15(B)(1) AND RACEWAY FILL ADJUSTMENTS FROM CEC 310.15(C)(1). <br />CONDUIT ON THE ROOF SHALL BE INSTALLED NO LESS THAN 1" ABOVE THE ROOF DECK. PV CIRCUIT <br />CONDUCTOR AMPACITY IS CONSTRAINED USING THE 75°C COLUMN WITH THE CONTINUOUS DUTY <br />UPRATING OR THE 90°C COLUMN WITH THE RELEVANT AMBIENT TEMPERATURE AND RACEWAY FILL <br />ADJUSTMENTS WITHOUT THE CONTINUOUS DUTY UPRATING PER 690.8(B), WHICHEVER IS THE LOWER <br />VALUE WILL GOVERN CONDUCTOR SIZING. NON-PV CIRCUIT CONDUCTORS USE THE AMPACITY IN THE <br />75°C COLUMN OR THE 90°C COLUMN WITH THE RELEVANT AMBIENT TEMPERATURE AND RACEWAY FILL <br />ADJUSTMENTS, WHICHEVER IS LESS (110.14(C) & 310.15(A)(2)). THE RATING OF THE CONDUCTOR AFTER <br />ADJUSTMENTS SHALL BE GREATER THAN, OR EQUAL TO, THE CONTINUOUS DUTY UPRATED CURRENT. <br />CALC EX: WIRE AMPACITY X AMBIENT TEMP. CORR. FACTOR X CONDUIT FILL ADJ. FACTOR >= OUTPUT <br />CURRENT <br />•TAG 1: INVERTER INPUT: 10 AWG RATED 35.0A, 35.0A >= 22.34A <br />•TAG 2: INVERTER INPUT: 10 AWG RATED 35.0A, 29.12A >= 22.34A <br />•TAG 3: INVERTER OUTPUT: 6 AWG RATED 65.0A, 65.0A >= 60.0A <br />•TAG 4: LOAD CENTER OUTPUT: 1 AWG RATED 130.0A, 130.0A >= 125.0A PAGE <br />REV: C1 2/3/2026 <br />OSCAR GONZALEZ <br />2007 N WESTWOOD AVE, <br />SANTA ANA, CA, 92706 <br />2007 1/2 N WESTWOOD AVE. <br />PROJECT NUMBER: <br /> 109R-007GONZ PR-3004301289 <br />SHEET <br />DESIGNER: <br />HIMANSHU VASHIST <br />CUSTOMER RESIDENCE: <br />ADU ADRESS <br />TEL. (714) 222-8870APN: 399-071-01 <br />(415) 580-6920 ex3 <br />PV-4.2 <br />#ESTAMP#SSTAMP <br />2500 WHITE RD. SUITE A, IRVINE CA 92614 <br />PHONE 805.540.7603 <br />FAX 949.215.7778 <br />CA CL #750184 <br />GILBERT CORREIA, C10, C46 <br />ELECTRICAL CALCS <br />C1