Now I want to replace it with a simple switch. This is easy if there are two sets of wires, one supply and one going to the light. But mine is very weird.
I see 3 wires at that box, 1 black, 1 white, and 1 bare copper. My electrical test pen makes noise when it touches the black and bare copper, but not white. There is 110V between black and white, and none between black and bare copper or between white and bare copper.
Is is normal ? How do I wire the new simple switch?
Thank you very much.
Update: It was working before the dimmer died. That is the only switch. Today I took out the lights ( that switch controls 2 lights ). Suddenly there is no voltage between the black and white anymore. The electrical pen beeps when it touches any of the wires, even at the black wire at the light. Is it normal ?