6 Things to Know About Extension Cord Length and Gauge

50 feet is the practical maximum for a 14-gauge cord at 10 amps. Beyond that, voltage drop causes tools to run slower and motors to overheat.

A 10-amp load like a circular saw or shop vac loses over 3% voltage at 50 feet. At 100 feet, you lose 6%, which is a noticeable performance sag.

If you need longer than 50 feet, step up to 12-gauge wire. Thicker wire handles the distance without significant voltage drop.

Voltage drop wastes electricity as heat in the wire. Longer cords with insufficient gauge are inefficient and can damage tools.

A hot cord after running your tool means you are overloading the length or gauge. This is a clear sign you need a thicker or shorter cord.

Never guess on cord size — that is how fires start. Always match gauge to both the amperage and the distance.