5 Things to Know About Extension Cords for Level 1 EV Charging

Use a 12-gauge cord minimum Level 1 charging pulls 12 to 16 amps continuously for hours. A 14-gauge “heavy duty” cord is not heavy enough and will overheat.

Get an outdoor-rated cord Look for a “W” or “W-A” rating on the cord. This ensures it can handle weather and moisture without degrading.

Check the plug fit Some EV chargers have bulky handles that won’t work with cheap flat plugs. Test the fit before buying.

Do not coil the cord while charging Keep the cord spread out so heat can dissipate. Coiling traps heat and increases fire risk.

Inspect the cord regularly Check for cuts, cracks, or damage before each use. A proper 12-gauge cord costs $30-40 and lasts decades if maintained.