Electrical Wire Size Calculator

This should be used as a reference only. Please check with your electrical inspector or a licensed electrician for the proper wire size. There are many factors to consider before choosing the proper gauge.

wire size

wire size

wire_types

Wire Size
Required Data Entry
Wire TypeCopperAluminum
Circuit PhaseSingle PhaseThree Phase
Circuit Voltage120208240277480
One Half The Total Circuit Length
Total Circuit Amperage

Calculated Results
Required Minimum Wire Size