That typically provides plenty of space and about 2" of depth. In my experience it's pretty common to use a 4" square box and a mud ring. Plaster ring, and there's a much larger box behind it, inside the wall. There was enough slack in the run that the wires stayed connected but the ground was lost.īut after looking at it a while longer, I think maybe we're seeing a Years ago I did see a home where the foundation had started to collapse and when the problem was fixed, the pulled apart a run of EMT. Adding an actual wire would be "belt and suspenders" but in any case I would imagine it would have to be sized for the largest conductor and it would have to be connected to each box and/or device. With few exceptions EMT functions as the grounding conductor. Home, which was wired with EMT, said that I had to run a green ground So, Ron, why did the electrician who inspected the wiring of my old Never seen any deviation ever to this in the past. I am used to a black/red and a white wire with a ground as well. I have never seen this before which is why I now have an appointment for Thursday or Friday for him to come look over all the switches. Both white wires which were capped were not hot as well. The blue wire coming in on the left was hot, the blue wire on the right was not hot. The red wire had no current with the fuse on. I turned the fuse back on and tested for live wires. Next I disconnected everything and separated the wiring. I pulled the actual light fixture down and the light was connected to a red and white wire, while blue wires were capped and unused. I opened 4 other switches throughout the house and all were wired this way. The white wires were capped together in the box. The old switch had the red wire on the top, and both blue wires on the bottom of the switch. The conduit on the right only has a blue and white wire. The conduit on the top left has a red wire, blue wire and white wire. There are two conduits with wiring in the box entering from the top. Upon removing the light, there is a metal junction box. This light switch is the only one that controls the hallway light. Seems easy enough, until I took the light switch out. I decided this weekend I wanted to replace a light switch to a dimmer. I am hoping someone can give me some piece of mind before our electrician can make it out later this week.
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