conduit to in-wall wiring transition
#1
conduit to in-wall wiring transition
I needed to run a new circuit. I tapped into a circuit in the garage. I ran three separate 12-guage conducters (b,w, g), without sheathing (THHN?), in the pvc conduit across the garage ceiling. WHen I got to the appropriate point, I drilled a hole in the ceilling and made the three individual wires exit the pvc directly through the hole into the floor of the next room. No portion of any of these conducters is exposed in the garage. I ran the three individual wires in the joist bay between the ceiling of the gargage and the floor above. Then I ran it to an outlet. The individula wires are stapled, wll back form the edges, in the floor/ceilling bay. The joist bay is covered above and below. Does the code require that the individual wires run in the ceiling/joist bay be sheathed?
#3
THHN must be in conduit at all times.
Adding to the garage circuit is probably a bad idea. In most homes built between 1978 and 1996, that circuit is also serving all the bathroom receptacles, perhaps the outdoor receptacles and perhaps the basement receptacle. This circuit is already doing plenty. I don't know what you plan to use the new receptacle for, but I think you're flirting with disappointment. If my guess about what this circuit serves is correct, it's not even legal to add to it.
Furthermore, you have quite possibly violated building codes by breaching the fire-rated ceiling. Also you have provided a path for car exhaust fumes to enter your bedroom.
Adding to the garage circuit is probably a bad idea. In most homes built between 1978 and 1996, that circuit is also serving all the bathroom receptacles, perhaps the outdoor receptacles and perhaps the basement receptacle. This circuit is already doing plenty. I don't know what you plan to use the new receptacle for, but I think you're flirting with disappointment. If my guess about what this circuit serves is correct, it's not even legal to add to it.
Furthermore, you have quite possibly violated building codes by breaching the fire-rated ceiling. Also you have provided a path for car exhaust fumes to enter your bedroom.
#5

Would it be ok to:
1) terminate the THHN wire in a surface mounted box on the garage ceiling
2) then make the transition to sheathed wire (ROmex) in the box
3) then exit the back of the box into the ceiling floor space so that I can then go to a box in the room above.
I don't want to do anything unsafe but it seems to me that most garage ceilings have at least one light complete with a box.
Thanks
1) terminate the THHN wire in a surface mounted box on the garage ceiling
2) then make the transition to sheathed wire (ROmex) in the box
3) then exit the back of the box into the ceiling floor space so that I can then go to a box in the room above.
I don't want to do anything unsafe but it seems to me that most garage ceilings have at least one light complete with a box.
Thanks
#7
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I hope you used Sch 80 PVC... the gray kind.
Where I am THNN can only be run in metal conduit...inside or outside of the building. I'm sure some areas are different..but I wouldn't run THNN wires in PVC inside. Just a personal preferece.
Why not run pretty EMT on the surface?
Where I am THNN can only be run in metal conduit...inside or outside of the building. I'm sure some areas are different..but I wouldn't run THNN wires in PVC inside. Just a personal preferece.
Why not run pretty EMT on the surface?