Parents often use plug protectors to protect their children from electrical hazards, but experts say they actually do the opposite.

The cable between the device and the three-pin plug contains three copper wires that are coated with plastic. copper wires are good conductors; plastic is a good insulator. Each part of the plug ...

The cable between the device and the three-pin plug contains three copper wires that are coated with plastic. Neutral wire Copper wire coated with blue plastic that also connects to the cable in ...