Free Residential Electrical Load Calculator

Residential Electrical Load Calculator

NEC Part IV, Optional method 220.82 & 220.83

Start here:
Enter Address

Address

General load

Qty.

Total

Structure

ft²

Added square footage

ft²

Small appliance circuits

1,500

3,000

Laundry circuits

1,500

Total: 4,500 VA

HVAC

Heating

Qty.

Total

Electric space heater - 1,500 W (12.5A at 120V)

Heat pump / Furnace - 6,000 W (25A at 240V)

Total: 0 VA

Cooling

Qty.

Total

Air conditioner - 4,000 W (16.7A at 240V)

Total: 0 VA

Other electrical load

Qty.

Total

Bath / laundry fan - 50 W (0.4A at 120V)

150

Dishwasher - 1,200 W (10A at 120V)

1,200

Disposal - 600 W (5A at 120V). < 0.75hp

600

Dryer - 5,000 W (20.8A at 240V)

5,000

Garage door opener - 300 W (2.5A at 120V). < 0.5hp

300

Microwave - 900 W (7.5A at 120V)

900

Pool pump - 1,800 W (15A at 120V). < 2.5hp

Range / Oven (Electric) - 8,000 W (33.3A at 240V)

Range / Oven (Gas) - 600 W (5A at 120V)

600

Range hood - 300 W (2.5A at 120V)

300

Refrigerator - 900 W (7.5A at 120V)

Spa/hot tub - 7,000 W (29.2A at 240V)

Water heater (Electric) - 4,500 W (18.8A at 240V)

Well pump - 900 W (7.5A at 120V). < 1.25hp

Total: 9,050 VA

EV charging

Qty.

Total

EV charger - 9,600VA (32A at 240V x 125%)

9,600

Total: 9,600 VA

Final calculation

First

8,000 VA

Remaining load at

2,220 VA

HVAC load

Calculated according to 220.82(C)

0 VA

EV charging load at

9,600 VA

Total calculated load

19,820 VA

Calculated amperage (load / 240V)

83 A

Existing or proposed service size

Leave blank unless required by AHJ

Top-tier tools for electricians

You're using the free version of our load calculator. Subscribers of Kopperfield can save default settings and access more features and tools. Get in touch to learn more.

Questions? hello@kopperfield.com

The default values are drawn from "Optional Feeder and Service Load Calculations" of the 2017, 2020, and 2023 NEC, Sections 220.82 and 220.83. This load calculation worksheet is provided for informational purposes only. It is the sole responsibility of the electrician preparing the calculation to verify and ensure both correctness and compliance with local regulations.