What gauge extension cord should I use for a 100-foot run with a 15-amp saw?

Use 12-gauge. 14-gauge technically handles 15 amps, but over 100 feet the voltage drop kills your saw’s power and can overheat the cord, risking motor damage. With 12-gauge, voltage stays closer to 120V, the saw runs full power, and the cord stays cool. Check for a “12/3” rating and outdoor use if needed.