|
For those that don't know use a volt ohmmeter and first check for voltage between the hot and neutral sockets. The gold screw on the switch is always hot and silver screw is neutral green is always ground, the small slot on a outlet is hot and large slot neutral. First check for voltage between hot and neutral then hot to ground, ground being metal wall box. If you have voltage that's a good indicator that you are grounded and ok to fasten ground wire to wall box.
Old houses with 2 prong wireing is always grounded at wall box. Modern home with 3 prong uses 3 wire cable one being ground.
|