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Wire pull question

bluedog225

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Jan 31, 2012
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Texas
I need to pull some wire. I’ve got a long 2” run from the conex to the shop. And I pretty much got that figured out. Two 90 degree turns and a long, gentle sweep.

My question is when I hit the shop. I have an LB conduit box coming bolted to the side of the shop. Do I start over with my angle calculations from the LB into the subpanel in the shop? Or do I have to pull it all the way to the sub panel?

That is, I’m trying not to exceed about 270° of turns in the conduit run.

On a related note, do I have to put splices in the LB conduit box or can I just shove the cable back into the conduit and start a new pull? I read something about that not being up to code. Am I limited to one continuous pull?

New to this. Any thoughts appreciated.
 
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kbuhagiar

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During my years in low-voltage wire construction and installation, we always applied wire pulling guidelines access point to access point. The LB is considered an access point, so I don't think you need to re-calculate.

Of course, I may be wrong, and/or different guidelines may apply to power supply wiring.
 
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bluedog225

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AFAIK the angles start over at an LB.

Why do you have splices, can't you pull a continuous length?
Great. Thanks.

I can’t pull all the way to the sub panel. It would be about 450 degrees.

But I can pull to the LB and then stick the wire back into the conduit. If that is ok. I thought there was some regulation against doing that. Maybe stresses the wire too much with too many reinsertions.
 

mike93lx

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Richmond, VA
An LB will not have room for splices. If you need to change wire types or extend, you need a junction box that is at least 12" in one dimension (due to the 2" conduit).

The angle counter starts over at a pull point, like a junction box or LB
 

billconner

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Generally splices definitely not allowed in a conduit outlet body. I guess there are some that are marked with their volume and subject to same rules as boxes, but I've never seen one.
 

PCustoms

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Great. Thanks.

I can’t pull all the way to the sub panel. It would be about 450 degrees.

But I can pull to the LB and then stick the wire back into the conduit. If that is ok.

That's how to do it.

What wire are you pulling in 2" conduit?
 
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bluedog225

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I believe 2-2-2-4 MHF. Subject to worrying about it some more and a check with an actual electrician.

And I may pull individual wires instead. I hear it may be easier and about the same price.
 
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PCustoms

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I believe 2-2-2-4 MHF. Subject to worrying about it some more and a check with an actual electrician.

And I may pull individual wires instead. I hear it may be easier and about the same price.
How long of a run?

I think that will pull easy in 2", especially with lube. If you get individual wires, the trick is to keep them from overlapping.

I pulled 4/0-4/0-2/0-4? 85' through 2" and an LB solo using lube and a bit of tension from a come along.
 
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