Calculate recommended aluminum wire size from load and distance
⚡ Recommended Wire Size ⚡
Aluminum Wire
—
AWG / kcmil
Required area: — circular mils
Heads up:
This free estimator is for general guidance only. Outputs are estimates based on your inputs and stated assumptions and are
not engineering or code-compliance advice. Always verify with a qualified electrician and applicable NEC/local requirements.
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Enter amperage and distance (and check the box) to calculate wire size
Assumptions: Aluminum only; resistivity constant = 17.4; single vs. 3-phase handled by path factor (√3 ~ 0.866 in numerator);
voltage drop slider sets allowable drop (1–5%). Wire size table maps required circular mil area to the next standard AWG/kcmil size.
