220.12 General Lighting & Receptacles
Connected VA = Floor Area (ft²) × 3 VA/ft²
Table 220.42 Demand Factors:
First 3,000 VA → 100%
3,001–120,000 VA → 35%
220.52(A) Small Appliance Circuits
Minimum 2 circuits × 1,500 VA = 3,000 VA (100% demand — folded into Table 220.42)
Each additional circuit: +1,500 VA
220.52(B) Laundry Circuit
1 circuit × 1,500 VA = 1,500 VA (100% demand — folded into Table 220.42)
220.53 Fixed Appliances
If 4 or more appliances (excluding dryer, range, A/C, heating):
Demand = Sum of nameplate ratings × 75%
If fewer than 4:
Demand = Sum of nameplate ratings × 100%
220.55 / Table 220.55 Electric Range / Oven
1 range ≤ 12 kW (Column C): 8 kW demand
For 1 range > 12 kW: 8 kW + 5% per kW above 12 kW
Multiple units: use Table 220.55 Column C, then adjust for kW > 12
Note: Column C values (1–3 units, rated ≤ 12 kW) shown below.
1 unit → 8 kW demand
2 units → 11 kW demand
3 units → 14 kW demand
220.54 / Table 220.54 Electric Dryer
Demand = Greater of 5,000 W or nameplate VA (for 1 dryer, 100% demand)
220.60 Heating & Air Conditioning
Use the LARGER of heating or cooling — not both (non-coincident loads).
Demand = max(Heating VA, Cooling VA)
Summary & Service Size
| Load Category | Connected VA | Demand Factor | Demand Load VA |
|---|---|---|---|
| Total Calculated Demand Load | — | ||
Total Demand (VA)
—
Minimum Amps @ 240V
—
Recommended Service Size
—
Study aid only — verify against the adopted code edition / a licensed professional before use in real project/estimate documentation.
References: NEC 2023, Article 220 (Branch-Circuit, Feeder, and Service Load Calculations).