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R E S I D E N T I A L E L E C T R I C A L L O A D W O R K S H E E T O W N E R: A D D R E S S: L I G H T I N G L O A D Art. 220 - 3(a) Total square footage of habitable living area : @ 3 watts per sqft = watts Art. 220 - 16(a) Two small appliance circuits @ 1500 watts each : 2 @ 1500 watts each = 3000 watts Art. 220 - 16(a) Additional small appliance circuits each : @ 1500 watts each = watts Art. 220 - 16(b) Laundry circuit (washing machine) @ 1500 watts ea. @ 1500 watts = watts Lighting Load Subtotal = watts Table 220 - 11 First 3000 watts of lighting load subtotal: @ 100% = 3000 watts Remainder from 3001 to 120,000 watts: @ 35% = watts Remainder over 120,000 watts: @ 25% = watts LIGHTING LOAD TOTAL = watts A P P L I A N C E L O A D Art. 220 - 17 Disposal: X 600 watts = watts Microwave: X 1500 watts = watts Compactor: X 1200 watts = watts Dishwasher: X 1200 watts = watts Food Center: X 600 watts = watts X watts = watts X watts = watts Appliance Subtotal = watts APPLIANCE TOTAL Art. 220 - 17 Appliance subtotal: watts X = watts [ Less than 4 units @ 100%; 4 or more units @ 75% ] ---PAGE BREAK--- Page 2 O W N E R: A D D R E S S: E L E C T R I C C L O T H E S D R Y E R Art. 220 - 18 5000 watts OR nameplate rating: [ Whichever is larger ] DRYER TOTAL = watts W A T E R H E A T E R (if electric) Art. 220 - 3(b) @ Nameplate rating : WATER HEATER LOAD = watts H O U S E H O L D C O O K I N G E Q U I P M E N T Table 220 - 19 Cooking Units - Includes ranges, wall mounted ovens, countertop units, and other household cooking units. Number of Units - ONE unit use 8,000 watts: TWO units use 11,000 watts: THREE units use 14,000 watts: FOUR units use 17,000 watts: FIVE units use 20,000 watts: COOKING TOTAL = watts S P A C E H E A T I N G / A I R C O N D I T I O N I N G Art. 220 - 4(a) Air conditioner nameplate rating [ @ 125% ] : watts X 125% = watts Art. 220 - 21 OR [ Whichever is larger ] Art. 220 - 15 Electric heat nameplate rating [ @ 100% ] : H E A T P U M P Art. 220 - 4(a) Largest condensing unit nameplate [ @ 125% ] : watts X 125% = watts Art. 440 - 33 AND Art. 220 - 15 Supplementary heat (resistance) [ @ 100% ] : watts X 100% = watts A D D I T I O N A L H V A C E Q U I P M E N T Art. 440 - 33 Condensing units or A/C's : > watts X 100% = watts SPACE HEATING/AIR CONDITIONING TOTAL = watts ---PAGE BREAK--- Page 3 O W N E R: A D D R E S S: O P T I O N A L E Q U I P M E N T Art. 220 - 3(b) SWIMMING POOL and/or SPA: > Art. 430 - 24 Largest motor nameplate : watts X 125% = watts Remaining motor(s) nameplate(s) : watts X 100% = watts Lights and other misc. equipment : watts X 100% = watts POOL/SPA TOTAL = watts Art. 220 - 3(b) WELDERS, KILNS, ETC. 1. Name or description of equipment : @ rated nameplate : watts X 100% = watts 2. Name or description of equipment : @ rated nameplate : watts X 100% = watts 3. Name or description of equipment : @ rated nameplate : watts X 100% = watts MISCELLANEOUS EQUIPMENT TOTAL = watts T O T A L D E M A N D O N S Y S T E M Art. 220 - 10 Sum of all totals : LIGHTING LOAD TOTAL = watts APPLIANCE TOTAL = watts DRYER TOTAL = watts WATER HEATER TOTAL = watts COOKING TOTAL = watts SPACE HEATING/AIR CONDITIONING TOTAL = watts POOL/SPA TOTAL = watts MISCELLANEOUS EQUIPMENT TOTAL = watts T O T A L L O A D F O R D W E L L I N G = watts ---PAGE BREAK--- Page 4 O W N E R: A D D R E S S: M A I N S E R V I C E S I Z I N G Art. 220 - 2 TOTAL LOAD DIVIDED BY: volts = Amps [ NOTE: For 120/240 Volt systems use 240 volts; for 120/208 Volt systems use 208 volts ] Art. 220 - 10 MINIMUM SERVICE SIZE AMPS Table 310 - 16 SERVICE ENTRANCE CONDUCTORS AWG, Cu, AWG, Al. Table 250 - 94 GROUNDING ELECTRODE CONDUCTOR AWG Copper OPTIONAL CALCULATION FOR DWELLING UNIT Table 220 - 30 100% of the nameplate rating(s) of the air conditioning watts 100% of the first 10 kVA of all other load watts 40% of the remainder of all other load watts TOTAL OPTIONAL LOAD watts Art. 220 - 2 TOTAL OPTIONAL LOAD: DIVIDED BY: volts = Amps [ NOTE: For 120/240 Volt systems use 240 volts; for 120/208 Volt systems use 208 volts ] Art. 220 - 10 MINIMUM SERVICE SIZE AMPS Table 310 - 16 SERVICE ENTRANCE CONDUCTORS AWG, Cu, AWG, Al. Table 250 - 94 GROUNDING ELECTRODE CONDUCTOR AWG Copper Revised 6/24/03