A while back, [Marius] was faced with a problem. A friend of his lives in the middle of a rainforest, and a microphone was attacked by a dirty, greasy rat. The cable was gnawed in half, and with it ...

It's standard practice for electricians to leave at least six inches of wire in wall boxes. That way, you've got enough slack to install a new outlet or switch. But if you're short on wire in a wall ...