Home Improvement Asked by Will Miller on February 19, 2021
I was trying to install a smart switch to a double gang electrical box and unplugged wires. As I was working on the smart switch I had to disconnect everything. Much to my dismay, the switch was not able to be connected, but now my thermostat, which is a few feet away is not not powered on.
I go to the furnace, and see that the plug that it is plugged in to is also not working.
As I go back to the switch/gang box, I see that there is a cable with 4 wires, not the typical 3. The colors are red, black, white, and bare which are all disconnected and capped for safety for now.
There are two other wires with the regular 3 wire configuration (black, white and bare). I believe these two wires go to the porch light and the landing light circuitry, but at this point I’m not sure.
Any ideas? Can anyone tell me how I can wire this up just to get my furnace working again?
Can anyone tell me how I would re wire this thing just to get the furnace and thermostat working again?
You need to figure out which cable is the feeder, the one from your service panel and the one going to the outlet. Connecting black to black , white to white and bare copper grounds will get that working in most cases.
The switch and lights may take a bit more information and photos to get correctly connected. Remember when switching sometimes the wire colors don't follow black is hot and white is neutral.
Answered by Ed Beal on February 19, 2021
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