Service Load Calculator — NEC 2023

Calculation dwelling type & method

Dwelling type

Method

Floor area (ft²)3 VA/ft² — 220.41

Small-appliance circuits1500 VA ea — min 2 — 220.52(A)

Laundry circuits1500 VA ea — 220.52(B)

Range / cooking — VA × qtyCombine oven + cooktop nameplates (Note 4). 0 = none

×

Chips ADD typical nameplates into the VA field (Note 4 combining) — edit the number to match the actual nameplate.

Clothes dryer — VA × qty0 = none. Std method uses ≥5000 each — 220.54

×

Air conditioning (VA)Larger of heat vs A/C used — 220.60

Electric heating total (VA)Fixed space heating @ 100% — 220.51

Fastened-in-place appliances Nameplate VA × qty. Excludes range, dryer, heat, A/C, EVSE. Std method: 75% when 4+ — 220.53

EV charger (EVSE) — VA × qty0 = none. Each ≥7200 VA — 220.57 (e.g. 48 A = 11,520)

×

Largest motor (VA)+25% — 220.50(A). Often the A/C compressor

House loads (VA)Common-area loads calculated per Art. 220 Part III, added at 100% — 220.84(B)

Business name

License #

Phone

Email

Business address

Prepared by

Date

Client / owner

Job / permit #

Project address

Notes for report