Equipment Conductor Sizer (NEC/NYS) — Aesthetic E Consulting

Conductor Calculator

Enter manually or scan a nameplate

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Amps — MCA or FLA *

Max Overcurrent Protection (MOCP)

Used to size the EGC per Table 250.122

Voltage

Phases

Continuous Load (3+ hours)

Multiplies amps × 1.25 per NEC 210.20(A).
If using MCA from a nameplate sticker — leave unchecked, the 1.25 is already built in.

Conductor Requirements

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Enter Amps (MCA) above
to calculate conductor sizes

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Scan Equipment Nameplate

Take a clear photo of the electrical rating sticker on the equipment. The AI will extract MCA, MOCP, voltage, and phase automatically.

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Disclaimer & Engineering Note

This tool is for quick field estimations based on standard NEC Table 310.16 (Copper, 75°C) and Table 250.122. Assumes THHN/THWN-2 conductors terminated at 75°C rated equipment terminals.

Always consult the local AHJ (Authority Having Jurisdiction) and verify against the current adopted code cycle in your specific New York State municipality. Not for finalized engineering stamps without proper environmental derating for temperature, conduit fill, and ambient correction factors.