3 Signs an Extension Cord Needs to Be Replaced
Heat at the plug or connector Heat means there is resistance from a loose or corroded connection. This can melt insulation, start a fire, or get worse until the cord fails.
Intermittent power or flickering lights This usually means the internal wire has a break or is shorting, often where the cord bends most. If jiggling the cord makes it work temporarily, replace it immediately.
The cord feels warm to the touch Do not wait for it to get hot. If it is warm, toss it. Extension cords are not worth repairing — a good 12-gauge cord costs about $20, far less than a fire.