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NEC Residential Load Calculator

Find out whether your electrical panel can handle an EV charger, heat pump, or addition — and download an AHJ-ready load calculation. Built by licensed C-10 electricians.

Free tool. NEC Article 220. Your result is an engineering estimate for planning & permitting; final design is subject to field verification and AHJ approval.

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We'll run the calc and pull the permit for you.

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⚠ Disclaimer — please read. This calculator is a free planning tool provided “as is.” The results depend entirely on the information you enter and are an estimate, not a design, a permit, or professional engineering advice. You are solely responsible for the inputs and the output, and for verifying the calculation, load values, and code edition with your local Authority Having Jurisdiction (AHJ) and a licensed professional before relying on it. Pacific Edge Electric and Solar makes no warranty and accepts no liability for any use of, or reliance on, this tool or its results. Actual load calculations for permitting must be prepared and stamped/signed by a qualified, licensed professional.

1. Method & code

For an existing panel: enter your existing loads and what you're adding (EV charger, range, oven, etc.), then mark the new ones “Adding” in the loads table. The method adjusts automatically.

2. Project & service

3. Dwelling

4. Loads

+ Add a custom load / free entry

Enter VA, or amps + volts. Pick a "kind" isn't needed — general by default.

+ Upload a panel list (CSV)

One row per circuit: Breaker Amps, Poles, Description, [VA/Watts], [Volts]. We auto-map named appliances (range, dryer, EV, A/C, water heater…). Note: a breaker's amperage isn't the calculated load — general receptacle/lighting circuits are covered by the VA/ft² general load, so we don't add them as separate loads.

LoadVAQtyAdding?
No loads added yet.

Result

Add your service size and loads, then calculate.