Do condulets act as pullboxes?

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cppoly said:
Do condulets reset the 360 degree requirement for conduits or are pullboxes required regardless?
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Yes. Any device in the conduit run, where you can undo a cover and access the wire, resets the 360 degree rule. This is the main reason why you'd install a type C straight conduit body
 
I agree with post #2.

What size conduit and what size conductors. You may have to use a pullbox due to the size of the conduit.
 
If the conduit body does not meet the requirements of 314.28, in my opinion, it would not reset the 360°.
 
don_resqcapt19 said:
If the conduit body does not meet the requirements of 314.28, in my opinion, it would not reset the 360°.
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I agree.

For example if you have 3" EMT you can pull in 4-600 kcmil THHN conductors, if you used a 3" C conduit body in the run it would likely be limited to a max of something like 3-250 kcmil by the manufacturer and would not count as a pull point. You could still install it but it wouldn't reset your 360° requirement.

If the conductors are smaller than #4 then the conduit body would be of sufficient size to reset the 360° requirement.
 
cppoly said:
There's no 360 degree bend requirements for av/it/fiber cable right?
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If anything, I would imagine it would either be the same or be stricter than 360 degrees of bends. I know that fiber requires larger radius sweeps. The mechanics of pulling a cable through a conduit are still the same in concept, whether it is a wire cable or a fiber cable.
http://www.lanshack.com/DesigningConduitRuns.aspx


I know it is possible to lay out 5 consecutive 90 degree elbows, and still pull the wire. I've tried it. But that rarely happens in practice, where you would lay out consecutive elbows and have minimal length. The code is adverse to accumulating bends, because each bend multiplies the tension, rather than increasing it incrementally like length does. Even though you could construct one scenario that is a straight long run that has just one bend, as another scenario with 5 bends and much less length, both of which have the same pulling tension and side wall pressure, the NEC doesn't make an exception. Maybe with engineering supervision of your pulling tension calculation, you might get an AHJ approval, but I wouldn't count on it.
 
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