Line\Load in same conduit

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hoots

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Gary, Indiana, U.S.A.
Quick question...I've been looking through the code book for too long with no luck. I have installed many "crouse-hinds" snap switches for M.O.V.'s in the past. generally we would come up into the Class 1 Div.2 switch housing, with our line using pvc coated ridgid, through a seal off, and into the 3-pole switch (480vac 3-phase). We would come out of the top of the housing with our load, through a seal, and too the motor using seal-tight. We have been having alot of issues with water\moisture somehow getting through the seals....anyways, our best option is to set a guat fitting beneath the switch and cap off the top of the housing. This means that we have our line and load in the same short amount of pipe and seal off. I've heard of possible derating of the circuits, but is there any other issues you see with doing it this way, any articles in the N.E.C. i can refer to...just trying to cover all bases before we go and install a few hundred more. Thanks!

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Line and load in the same conduit is fine, it's actually done all the time if you look at a lowly light switch.

Roger
 
roger said:
Line and load in the same conduit is fine, it's actually done all the time if you look at a lowly light switch.

Roger
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Unless, of course, the line side conductors are unprotected service conductors.
 
the seal isn't there to stop water and may or may not stop it.

"explosion proof" wiring methods do depend on relieving pressure within (if there is an explosion within) through the threads of the raceways/fittings, so those aren't intended to make a perfect seal either.
 
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