How to turn a sharp 90 with electrical conduit

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  #1  
Old 07-01-13, 07:15 PM
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How to turn a sharp 90 with electrical conduit

I have 1 inch conduit that I am bringing into the building with a pull box. It enters the cavity between 2x4(s) right below the Main panel. I need to take a sharp turn up and go another 2 to 3 feet into the panel.

Can I use a regular PVC elbow to do this? I cant find a 90 degree elbow for 1 inch conduit. There is a 90 degree pull box, but I cant find that in 1 inch either.

Isnt electrical PVC exactly the same as regular with the exception of color?
 
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Old 07-01-13, 07:34 PM
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You would need to use a 1" LB . Sometimes two back to back to do what you want to do.

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Old 07-01-13, 07:35 PM
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I have 1 inch conduit that I am bringing into the building with a pull box. It enters the cavity between 2x4(s) right below the Main panel. I need to take a sharp turn up and go another 2 to 3 feet into the panel.

Can I use a regular PVC elbow to do this? I cant find a 90 degree elbow for 1 inch conduit. There is a 90 degree pull box, but I cant find that in 1 inch either.
You can use a LB (pull box) if it's going to be permanently accessible. Otherwise you're sol.

Isnt electrical PVC exactly the same as regular with the exception of color?
No. Electrical PVC is free of sharp edges and turns, contains fire retardants, stabilizers, and has a UL, ETL, CSA, or other NRTL listing making it suitable for electrical.
 
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Old 07-01-13, 07:49 PM
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Or a pull ell:

[ATTACH=CONFIG]14621[/ATTACH]
Image source: Galesburg Electric
 
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Old 07-01-13, 09:09 PM
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Ray, I cant find one of those in 1 inch.
 
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Old 07-01-13, 09:16 PM
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I guess there is another solution, which I didn't like at first, but....

I could bring it right into the back of the box. There are a number of cutouts on the bottom.

Would this work?

CANTEX Pull Elbow, 1 Piece, 3/4 In, PVC - Conduit Fittings - 4FYV9|5240101 - Grainger Industrial Supply.
CANTEX Reducers, 1 Piece, 1X3/4 In, PVC - Conduit Fittings - 4FYK1|5142221 - Grainger Industrial Supply

It has a plate, so does that mean it HAS to be accessible (cant sheet rock over it)?
 

Last edited by amaskedman; 07-01-13 at 09:34 PM.
  #7  
Old 07-01-13, 11:11 PM
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Your link shows a 3/4" pull ell and a 1" to 3/4" reducer.

So that pull ell is too small and that reducer is of no help.

I don't think they make pull ells in PVC larger than 3/4"

.......and yes......any plate on any electrical box must remain accessible.
 
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Old 07-02-13, 07:28 AM
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I don't think they make pull ells in PVC larger than 3/4"
Did a search and I retract my suggestion. Just didn't occur to me there wouldn't be. Live and learn. Shutting up now.
 
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Old 07-02-13, 08:54 AM
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I cant find one of those in 1 inch.
Would a 1" metal pull ell with two PVC male adapters work in the space?
 
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Old 07-02-13, 11:40 AM
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Is it possible to set the exterior LB at an elevation equal to the elevation of the panel , so the conductors enter thru a KO on the back of the panel ?.
 
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Old 07-02-13, 04:12 PM
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Is it possible to set the exterior LB at an elevation equal to the elevation of the panel , so the conductors enter thru a KO on the back of the panel ?.
This is a good way to do it, but I would prefer using a 90 degree elbow like this:

CANTEX 90 Elbow , Schedule 40, 1 In, PVC - Conduit Fittings - 4FYE5|5133825 - Grainger Industrial Supply
 
  #12  
Old 07-02-13, 05:21 PM
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I would prefer using a 90 degree elbow
I agree. Much easier to pull through.
 
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Old 07-02-13, 06:00 PM
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See if a commercial electrical contractor will bend one for you or check a supply house for the 90.
 
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