Extension Cord Gauge Guide

Find the minimum AWG wire gauge needed for your extension cord based on the amperage draw and cord length — the wrong gauge causes overheating, voltage drop, and fire risk.

Amperage Draw (amps) Or enter watts (we'll calculate amps) Cord Length (feet) Use Case

minimum AWG recommended

AWGMax AmpsUp to 50ftUp to 100ft

16 AWG13AOKlight duty

14 AWG15AOKOK

12 AWG20AOKOK

10 AWG30AOKOK (heavy)