I'm in an old house. I removed and replaced 2 out of 3 with no problem. I get to the third and there are 5 wires: 2 black, 2 white/cream, and one bare copper wire. I think I have it hooked up right but the breaker flips when I turn power on. What am I doing wrong?
Note sure of how you connected them. If Load if attached to neutral its going to make a short circuit and Breaker flips.
Bare Copper wires is usually earthing. Usually black wire is Load and white wire is Neutral. If Black is joining to black(also white with white) then it represent a serial connection that may be used in some other place using the same switch.