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Joined: Jul 2004
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Legal?


Greg Fretwell
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Sure ... why not? I can't imagine the code denying extra protection of the conductors.

OTOH .... as such, aren't you required to bond the raceway at both ends? If you're going to do that ... well, that implies a splice, which in turn says 'transition to pipe as wiring method.'

I'll wimp out, and say "I don't know" laugh

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Raceways are typically plastic around here. Sch40 or 80 in the ground with sch 80 risers.

I was asked the question because someone has a 110' service lateral to put in, piped all the way and they have that much SER in the shop. Money is the main issue

I was thinking it should be OK and I can't really find a violation but 338 and 230 are pretty vague in this area.



Greg Fretwell
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Wouldn't this simply be a case of RNC in the ground being considered a wet location and SER is only rated for damp locations?


---Ed---

"But the guy at Home Depot said it would work."
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SER is wet location, this one is marked THWN conductors.


Greg Fretwell
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That's a new one to me. I've only seen type XHHW conductors in SER cable, but that's irrelevant. I asked if our local inspector would allow this and he said no. His reasoning in my situation was due to the fact that the cable contained paper spacers in it. I didn't put up much of an argument, in fact THWN was a LOT easier to pull anyway.

In your case, I'd think that THWN conductors pretty much sums it up.


---Ed---

"But the guy at Home Depot said it would work."
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There is no "paper" in this cable. After all it IS a wet location wiring method.

I bounced this off the IAEI BB and they say no because U/L doesn't list SE for underground laterals, for that matter THWN is not listed that way either. USE is the only option according to IAEI if you take the White Book as gospel.

Last edited by gfretwell; 09/11/07 02:13 PM.

Greg Fretwell
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Yeah, that's exactly what I meant to say! wink


---Ed---

"But the guy at Home Depot said it would work."
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Athough PVC was discussed at the link below, the issue of a SE type cable installed underground was kicked around.



https://www.electrical-contractor.net/forums/ubbthreads.php/ubb/showflat/Number/78280/page/0/fpart/1

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OK here is the result for "this" installation. FPL and Lee County have blessed the SER and it is going in the ground tomorrow. I suppose your mileage may vary and it might even here next time. I certainly hope the same inspector (who gave the blessing) shows up for the 305.
I am planning on going by to watch and they say I may get a chance to demonstrate my skill at shooting a pipe under a sidewalk.
We did have a volunteer who was going to strip off the jacket for the bare copper we won't need but that doesn't look like it will be necessary.


Greg Fretwell
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