5 Things to Know About Extension Cord Gauge

12-gauge cords handle 20 amps; 14-gauge handles 15 amps. This difference matters when running a circular saw or space heater.

14-gauge is fine for lights, fans, and phone chargers under 15 amps. It is cheaper, lighter, and easier to coil.

Do not plug a table saw into a 14-gauge cord. You might trip a breaker or start a fire if the cord is long.

12-gauge is the default for power tools, shop vacs, and air compressors. It handles 20 amps and is safer for high-startup tools.

For cords over 50 feet, bump up to 10-gauge. Long distance kills ampacity faster than you think.