Laserfiche WebLink
BACKUP LOADS <br />LOAD BREAKER RATING <br />(AMPS)LABEL DEMAND <br />LOAD <br />1 20A-1P OUTLETS 1500 W <br />2 20A-1P WORK LTS 1500 W <br />3 20A-1P KIT 1500 W <br />4 20A-1P KIT 1500 W <br />5 30A-2P DRYER 5760W <br />6 50A-2P RANGE 9600W <br />7 15A-1P LITE SWITCHES 1500 W <br />8 15A-1P BED LIGHTS 1500 W <br />9 20A-1P KIT 1500 W <br />10 20A-1P KIT 1500 W <br />11 20A-1P DW 1500 W <br />12 20A-1P DW 1500 W <br />13 30A-2P AC 5760 W <br />14 20A-1P BATH 1500 W <br />15 20A-1P OUTLET 1500 W <br />16 15A-2P TRM 2880 W <br />Inverter Calculations <br />Each Inverter has the following values which are calculated following these 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)Inverter Powerwall 3 1707000-xx-y <br />•Max DC Circuit Current = 17.42A <br />•Max AC Output Current = 48A <br />•OCPD Needed = 60A <br />•System Characteristics: <br /> •Operating Voltage = 157.11V <br /> •Max Open Circuit Voltage = 200.64V <br /> •Operating Current = 26.1A <br /> •Short Circuit Current = 34.84A <br />Allowable Backfeed: <br /> Max Allowed Total Generation Backfeed OCPD = <br /> Main Breaker Rating = 100 A <br /> 70 A ≤ 100 A → Interconnection <br /> Meets CEC 2025 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)(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 conductor <br />ampacity is constrained using the 75°C column with the continuous duty uprating or the 90°C <br />column with the relevant ambient temperature and raceway fill adjustments without the continuous <br />duty uprating per 690.8(B), whichever is the lower value will govern conductor sizing. Non-PV <br />Circuit Conductors use the ampacity in the 75°C column or the 90°C column with the relevant <br />ambient temperature and raceway fill adjustments, whichever is less (110.14(C) & 310.15(A)(2)). <br />The rating of the conductor after adjustments shall be greater than, or equal to, the continuous <br />duty uprated current. <br />Calc Ex: Wire Ampacity x Ambient Temp. Corr. Factor x Conduit Fill Adj. Factor >= Output Current <br />•Tag 1: Inverter Input: 10 AWG rated 35A as per 75°C, 36.4A as per 90°C with adjustements >= <br />21.77A <br />•Tag 2: Inverter Input: 10 AWG rated 35A as per 75°C, 29.12A as per 90°C with adjustements >= <br />21.77A <br />•Tag 3: Inverter Output: 6 AWG rated 65A as per 75°C, 68.25A as per 90°C with adjustements >= <br />60.0A <br />•Tag 4: Load center Feeder: 4 AWG rated 85A as per 75°C, 86.45A as per 90°C with adjustements <br />>= 70.0A <br />PAGE <br />REV: A 4/27/2026 <br />JAMES POBOG <br />2306 W MANLY AVE, SANTA <br />ANA, CA, 92704 <br />PROJECT NUMBER: <br /> 109R-306POBO2 PR-3005088446 <br />SHEET <br />DESIGNER: <br />SREERAJ P R <br />CUSTOMER RESIDENCE: <br />TEL. (714) 788-0787 <br />APN: 412-253-53 <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