5 Things to Know About Extension Cord Gauge for Ampacity

Gauge determines ampacity, not length Wire thickness (gauge) sets the safe current limit. Thicker wire carries more current without overheating.

16-gauge is for light duty only Use for lamps and phone chargers. Max 10 amps, keep under 50 feet.

14-gauge handles standard household tools Good for circular saws, miter saws, and shop vacs. Max 15 amps, fine up to 100 feet.

12-gauge works for heavy tools Use for table saws and air compressors. Max 20 amps, good up to 100 feet.

10-gauge is for big draws Needed for welders, RVs, and heaters. Max 30 amps, can go 150 feet or more.