Dwelling Load Calculator NEC Article 220
Single-family dwelling service/feeder load calculation. Select calculation method below.
Standard (Part III) — Required for new construction. Uses individual demand factors per load type.
Optional (Part IV) — Allowed for existing dwellings with 100A+ service per 220.82. Uses a simplified demand factor on total connected load. Often yields a lower result.
General Lighting & Receptacles 220.12
3 VA per sq ft per NEC 220.12
Small Appliance & Laundry 220.52
1,500 VA each per 220.52(A)
1,500 VA each per 220.52(B)
Fixed Appliances 220.53
Enter nameplate VA for each. If 4+ fixed appliances, 75% demand factor applies per 220.53.
NEC 220.55 Table demand applies
Min 5,000 VA per 220.54
Trash compactor, built-in microwave, etc.
Heating & Cooling 220.60
Only the larger of heating or cooling is used (non-coincident loads per 220.60).
Nameplate VA or amps × 240V
Total of all fixed electric heat strips
By clicking Apply, you acknowledge that results are for reference only and must be verified by a qualified electrician against the current National Electrical Code and local amendments.
| Item | VA |
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For reference only. Verify all results with the current NEC and local amendments. See Terms of Use.