Is a ground wire necessary?
The ground wire is not strictly necessary for the operation of a device, but it is still an important feature. This wire is designed to provide a path for electrical current to travel if the normal paths aren't available. This could be because the other paths are damaged, or there is too much electricity for them. What happens if you don't ground a wire? Don't ground to the electrical box. Connecting the ground wire to a metal electrical box will energize the box in the event of a short circuit.