Don't bend a frozen extension cord.

Yeah, cold temps make extension cords stiff and brittle, but the electrical performance itself isn’t the issue—it’s the physical damage you cause when you try to uncoil a frozen cord.

The real problem is the insulation. Most extension cords use PVC, which turns into a stiff plastic rod below freezing. If you force it straight or wrap it around something, you can crack the jacket and expose the wires. That’s a shock and fire risk. The copper inside actually conducts better in the cold (lower resistance), but that doesn’t matter if the wire breaks because you bent it too sharply.

Rubber or TPE cords stay flexible down to much colder temps. If you work outside in winter, spend an extra few bucks on a “cold-rated” cord. Otherwise, warm the cord up inside before you use it, or at least uncoil it gently.

Save yourself the headache—don’t battle a frozen extension cord.