I completely lost power only in bathroom, so I reset the GFCI and then I turned on the light switch. As soon as I flipped the light switch up the lights flashed on then off and the GFCI outlet made a clicking sound. Reset GFCI again and the outlet has power but as soon as I flip up the light switch the outlet loses power. So, the outlet retains power until I flip light switch, lights don't work at all except for when it flashes on/off when I reset GFCI and flip up the light switch. I reset everything on breaker still no luck. Can anyone help?
One of two things. Either
- you just installed this GFCI, and you miswired it quite badly, probably relating to removing the warning sticker on the LOAD terminals.
- The lights are wired to be protected from ground faults by the GFCI. The light developed a ground fault, and the GFCI detected this, and tripped to protect you, as intended.
- Both at once: you just installed (correctly) and something downline has a ground fault. This is always a risk when you add a GFCI and use
In the latter case, remove the bulb and see if the trip goes away (don't get your hopes up, it's just easy.) If not, remove the fixture. If it stops tripping, it's the fixture, fix it. If it still trips, it's elsewhere in the circuit.
If you just wired up the GFCI today, then either significantly school up on how GFCI protection works and how to properly use LOAD terminals, or just don't use them.