100' rule

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wattup

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When running conduit as a general rule I heard years ago,every 100' of conduit we set a conduit body or box in runs longer than 100'. Is this actually an NEC requirement? If so I haven't been able to locate it. We use it to add lube or for fishing purposes if needed. If it is required where is it in the Code book?
 
Re: 100' rule

Charlie is right on the money.

I have seen a lot of engineers specs that have a 100' max length between pullboxes or conduit bodies. This is probably where you remember seeing that requirement.

Chris
 
Re: 100' rule

From way back I have heard the same myth,have never been able to sustanciate it.But hear it all the time.Probably started from a 120 ft fish tape that shrunk as pieces were cut off to use as snatch hooks and before you knwew it there wa 105 ft left :eek:
 
Re: 100' rule

Because the diggers are like energizer bunnies they keep going and going and going :D 1 taco =4 ft 2 tacos = 8 ft.Throw in a plate of arroz con carne o pollo and the bunny kicks in.
sorry for the stereotype,but it is true ;)
 
Re: 100' rule

Jim,

Just finishing a job now,the UG spec was 250',considering the building is 500x500 plus the parking area,that made for quiet a few UG j-boxes of many different flavors.
 
Re: 100' rule

Thanks for all the replies. I was thinking it was not NEC and just a spec but it is nice to know for sure.
 
Re: 100' rule

Originally posted by infantryldr:
This is a ANSI code.
Who's enforcing that? Maybe contract language.
Without a contract spec, the length between pull points is limited mainly by the length of your pull rope or fish tape.
 
Re: 100' rule

What code in ANSI are you referring to? We look at ANSI quite a bit because we also bring Presses and other equipment up to OSHA and ANSI standards with a sister company. I have never ran across anything on pullboxes or conduit length.
 
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