5 Signs UV-Damaged Extension Cords Need Replacing

Stiffness If the cord feels noticeably stiffer than when new, UV light has broken down its plasticizers.

Surface cracking Bend the cord—fine cracks appearing at the bend points mean the insulation is failing.

Faded or chalky color A faded or chalky outer jacket is a clear sign of UV damage, especially on cords stored in direct sun.

Brittle texture If the cord feels like cheap plastic left in a hot car dashboard, the insulation is compromised.

Visible splits under load Don’t trust a stiff or cracked cord—it can split open when in use, exposing live wires. Replace it immediately.