Another CEE question

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txinspect

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I apologize if this question has been asked before; however, I have searched and read through quite a few topics concerning CEE's and have not found the answer.

If a contractor is using 4 AWG for the CEE on a continuous run does it need to be sleaved for protection where it comes through the slab?

Our concern in my inspection area is that if it is not sleaved then it is more subject to physical damage because there is no "play" for the wire itself. In other words, if a framer does not notch the bottom plate for it and just slams the plate against it, it can be broken off and trapped under the plate. If you tugged on it and it was under the plate well enough, you would have no idea that it had been broken.

The handbook shows sleaving in this instance; however, it makes no mention of a requirement. I feel that it requires protection from physical damage under the NEC code; however, there seems to be a vague definition of "physical damage" when it comes to this topic.

Thanks for all replies...

TXInspect
 
Re: Another CEE question

Originally posted by txinspect:
If a contractor is using 4 AWG for the CEE on a continuous run does it need to be sleaved for protection where it comes through the slab?
This sounds like you're wanting to apply the requirements of 300.5 to the GEC emerging from the foundation. I don't believe this can be effectively applied. I tried several approaches to making it work, and couldn't make it stick.

In other words, if a framer does not notch the bottom plate for it and just slams the plate against it, it can be broken off and trapped under the plate. If you tugged on it and it was under the plate well enough, you would have no idea that it had been broken.
That sounds severe.
250.64(B):
...A 4 AWG copper or aluminum or larger conductor shall be protected if exposed to severe physical damage...
I'd say a simple solution is to require a hole for the GEC in the shoe, otherwise, require a conduit. Lo, a hole will appear. :cool:
 
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