4 Things to Know About Space Heater Extension Cords

Use a 12-gauge cord for a 1500W space heater A 1500W space heater draws about 12.5 amps. A 12-gauge cord handles that load safely and delivers full power.

A 14-gauge cord runs warm and loses power At 50 feet, a 14-gauge cord causes voltage drop. It works technically but runs warm and won’t give you the heat you want.

A 12-gauge cord stays cool and won’t trip breakers It handles the current without overheating, even on long cold nights. That is the sweet spot for 50 feet and 1500W.

You can go up to 10-gauge for longer runs If the cord is longer than 50 feet, a 10-gauge is a safe upgrade. But 12-gauge is sufficient for most setups.