5 Signs Your Extension Cord Is Overloaded and Dangerous

The cord feels hot to the touch Heat is the main warning sign. If the cord is warm — not from sunlight — it means it’s working too hard and could start a fire.

The insulation is discolored or stiff Discolored or stiff insulation means the cord has been overheating. Unplug it and throw it away immediately.

You smell melting or burning plastic A burning or melting smell means the cord is failing. Stop using it right away.

The plug buzzes or your breaker trips repeatedly Buzzing sounds or frequent breaker trips indicate electrical stress. Replace the cord and don’t use it again.

You’re daisy-chaining cords or using a long cord for a high-wattage device Never plug one extension cord into another. Use the shortest cord possible — longer cords have more resistance and heat up faster. A 16-gauge cord handles only 13 amps (about 1,500 watts), so a space heater alone can max it out.