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Old 11-15-2011, 04:36 PM   #1
RPN
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What Size Conduit for 4/0-4/0-2/0-#4


Getting ready to run 150' of 4/0-4/0-2/0 URD and a #4 EGC.

It will have two 90s and two 45s.

Waffling between 2.5" and 3" conduit.

Your thoughts?

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Old 11-15-2011, 05:07 PM   #2
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What Size Conduit for 4/0-4/0-2/0-#4


3" is better. You always want to give yourself extra room in conduit if you have the space to run it. It is better to have extra room than not enough and make it hard to pull the wire thru.

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Old 11-15-2011, 05:35 PM   #3
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What Size Conduit for 4/0-4/0-2/0-#4


That was my thought also. It is only another $45 or so of conduit.

The only issue is that I have to connect to a 2.5" LB (conduit body) and I don't have any readily available 3"-2.5" reducers.

However, I do have a 3"-2" reducer. I may use that, run a few inches of 2" at the end and sleeve some 2.5" over the 2" to act as an expansion for frost heave.
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