EV Charging Elect Load Calc Form(Loads shown are rough estimates; actual loads may vary – for a more precise analysis, use the nameplate ratings for appliances and
other loads and consult with a trained electrical professional.)
Check All
Applicable Loads Description of Load Typical usage Watts used
GENERAL LIGHTING AND RECEPTACLE OUTLET CIRCUITS
Multiply the
Square Footage of House X 3 3 watts/sq. ft.
KITCHEN CIRCUITS
Kitchen Circuits 3,000 watts 3,000
Electric Oven 2,000 watts
Electric Stove Top 5,000 watts
Microwave 1,500 watts
Garbage Disposal under Kitchen
Sink
1,000 watts
Automatic Dish Washer 3,500 watts
Garbage Compactor 1,000 watts
Instantaneous Hot Water at Sink 1,500 watts
LAUNDRY CIRCUIT
Laundry Circuit 1,500 watts 1,500
Electric Clothes Dryer 4,500 watts
HEATING AND AIR CONDITIONING CIRCUITS
Central Heating (gas) and Air
Conditioning
6,000 watts
Window Mounted AC 1,000 watts
Whole-house or Attic Fan 500 watts
Central Electric Furnace 8,000 watts
Evaporative Cooler 500 watts
OTHER ELECTRICAL LOADS
Electric Water Heater (Storage type) 4,000 watts
Electric Tankless Water Heater 15,000 watts
Swimming Pool or Spa 3,500 watts
Other: (describe) watts
Other: watts
Other: watts
ELECTRIC VEHICLE CHARGER CIRCUIT
Level 2 Electric Vehicle Charger Wattage Rating*
(Add-up all of the watts for the loads you have checked )
TOTAL WATTS USED
*Use name plate rating in watts or calculate as: (Ampere rating of circuit X 240 volts = Watts)
INSTRUCTIONS: Using the “TOTAL WATTS USED” number from the previous page, check () the appropriate
line in column 1 and follow that line across to determine the minimum required size of the electrical service
panel shown in column 3. In column 4, write-in the size of your existing service panel (main breaker size). If your
Existing service panel (column 4) is smaller than the minimum required size of the existing service (column 3),
then you will need to install a new upgraded electrical service panel to handle the added electrical load from the
proposed Level 2 EV Charger.
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