Dwelling Load Calculator

Calculate residential service load per NEC Article 220 (Standard Method).

General Lighting & Receptacles

Computed at 3 VA per sq ft per NEC 220.12

Required Circuits

Min 2 required @ 1500 VA each
Min 1 required @ 1500 VA

Appliances (Fixed)

Major Equipment

Demand per NEC Table 220.55
Min 5000W or nameplate

Heating & Cooling

Per NEC 220.60, use only the larger of heating or A/C (not both)

NEC 220.52 Demand Factors

For general lighting and receptacle loads:

VA Amount Demand Factor
First 3,000 VA100%
3,001 - 120,000 VA35%
Over 120,000 VA25%