NEC Dwelling Service Load Calculator (220.82)
What size electrical service do I need for a 1,500 sq ft house?
Enter 1,500 in the Conditioned area field with your actual appliances; the calculator runs both the Standard method (NEC 220 Part III) and the Optional method (NEC 220.82) and shows recommended service amps for each. A typical all-electric 1,500 sq ft home commonly lands at a 100 A or 150 A service, but the result depends on your range, dryer, HVAC, and EV loads. Take the smaller compliant rating and confirm with your AHJ.
Run the numbers for your project
Use the NEC Dwelling Service Load Calculator (220.82) to get an exact answer for your inputs.
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