Breaker / OCPD Sizing

General loads per 210.20(A) / 215.3 (125% continuous) and single motors per Article 430.

General load

Load Units Voltage Phase

Continuous (3 hrs or more — EV, water heater, heat, lighting) Conductor

Single motor (Art. 430)

Phase Voltage Horsepower SCGF device Nameplate FLA (for overloads)

Service factor ≥1.15 or 40°C rise (125% overload)

Motor FLC comes from Tables 430.248 / 430.250, not the nameplate. A/C and refrigeration equipment: use the nameplate MCA and MOCP (Art. 440) instead of this motor tool.

Reference only — not engineering, legal, or code-compliance advice. Results are estimates for qualified persons and must be verified against the NEC edition adopted where the work is done (your selected edition), manufacturer instructions, and the local AHJ. Use is subject to the Terms of Use & Disclaimer. — Morningstar Electric LLC