4x4 recessed junction box with 1-1/4" conduit

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Shujinko

Shujinko

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What is the smallest depth size for a 4"x4" wall recessed junction box in order to fit an 1-1/4" conduit on it? How about the depth for an 1-1/2" conduit? It's just to run AV and data cables in it, no wiring devices installed in the j-box just cables passing through.
 
Well, you have to fit the fitting and locknut, plus the wall-surface thickness.

I have found 4" deep ones:

4 in. Deep Boxes

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And how many boxes have each of us seen that where so stuffed with cat 6 cables they couldn’t put the cover on, looked like a blue bubble
 
I don't think there's a legal minimum. As I said above, you have to fit the fitting and wall.
 
For 1.25" KO a 2 1/8" deep standard box will work if you can use a 4 11/16" box instead of a 4".
1.25 KO Box.jpg
 
I think I would only do this if I were pulling straight through and only ending say 1-4 of the cables at that box.

No angle or U pulls in that small of a box. They don't even recommend that short of radius bending of the cable if you want maximum performance out of it.
 
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