I am running conduit for thhn wires in the crawl space below the house. I have some 90° bends, and it is tight to fit an elbow, so I just wanted to leave wires exposed for ½ inch or so. No plans to pull more wire, and the spot is easily accessible. As I can read the code this is not allowed unless the wire is allowed to be used without conduit, like NM-B type, but maybe there are exceptions I am not aware of? Please give reference to code, and not "My uncle Bob did it like that" Thanks
No plans to pull more wire
Does not matter.
and the spot is easily accessible
Does not matter.
As I can read the code this is not allowed unless the wire is allowed to be used without conduit, like NM-B type
I am running conduit for thhn wires in the crawl space below the house. I have some 90° bends, and it is tight to fit an elbow
Make sure you are availing yourself of ALL the available kinds of bends.
You can buy these pre-made if you like or bend them yourself with an appropriate tool. No need to master the art of getting multiple bends Just Right - just do one bend at a time and use couplers. You're in a crawlspace so presumably you have some height to play with... use it, the conduit doesn't have to be snug against something usually.
Pull Elbow. This has the lid on the 45 degree angle across the outer face.
Wrong coupler on that particular one, but it's the picture we had.
Corner pull elbow. Same but with lid on side face.
"LB" conduit body. Asymmetrical; door on the outside.
"LL" conduit body, ditto, left side.
"LR" conduit body, ditto, right side.
You shouldn't use "elbows" on conduit. You can either use a sweep (gently curved, easy to pull through)
or you can use an LB, LR, LL (sharp elbow but with a removable access cover for pulling.)
There's also a "pulling elbow" with a cover at 45 degrees, similar function.
The conduit must be completely assembled EMPTY and then the wires are pulled into it. If you can't do that, you need to change things so you can. The access covers can be removed while pulling, of course - that's what they are for. Then they must be replaced before commissioning the circuit.
The wires must be completely inside the conduit or junction boxes the conduit is assembled to, with no wires exposed.