I am trying to replace a switch/receptacle combo in our bath room with a GFCI switch/receptacle combo. I am no electrician but understand wiring for the most part however this one has got me stumped.
There is a switch outside the bathroom door which, when flipped on provides power to the switch/receptacle combo. The switch on the combo in turn, provides power to a light fixture in the bathroom. I was expecting a 3-wire (black, white, ground) cable from the line in (switch outside the door) and a similar 3-wire cable connecting the combo switch to the light fixture.
Instead, when I removed the existing combo from the wall I noticed that it was connected by a single 4-wire (black, white red, ground) cable. The black, white and green were connected to the existing combo box's line in connections. Using the previous installation as an example along with the instructions I felt reconnected the black, white and ground wires connected to the LINE IN of the new GCFI combo box as expected. Following direction provided here I proceeded to connect one of the switch leads to the load terminal on the GFCI combo box and connected the other switch lead to the Red (hot) wire, assuming that the light is being provided power from the red wire.
When flipped the circuit back on to the bathroom the GFCI immediately tripped, indicating that the wiring was incorrect.
Of course I am thinking that there was no neutral (white) wire retuning to the light so I don't know if that means anything, however this was working before so I am at a bit of a loss for what to try now and hoping that someone here might be able to help me out.
Here is a link to a photo of the GFCI Combo wired up with the 3-wire line in connected and the two switch leads and the one remaining red wire disconnected.
My wife would love to turn the lights back on in the bathroom so any help would be appreciated!! :)