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#169778 - 10/15/07 03:31 PM Large RV park Feeders Triplex underground  
Yoopersup  Offline
Member
Joined: Mar 2003
Posts: 826
Michigan
Can 3 4/0 Alum. conductor triplex underground rated be in stalled in PVC conduit with a # 4 copper ground wire. If it meets 40 % fill single phase 120/240 volt. I'd say so want other views on this.?


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#169780 - 10/15/07 04:02 PM Re: Large RV park Feeders Triplex underground [Re: Yoopersup]  
George Little  Offline
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Joined: Jan 2004
Posts: 1,489
Michigan USA
I don't see a problem Ernie as I understand your discription. I don't know of anything in the code that would prohibit using a copper equipment grounding conductor with an aluminum feeder. and I'm assuming that the triplex consist of all insulated conductors. See Ya in Troy in December.


George Little

#169781 - 10/15/07 04:56 PM Re: Large RV park Feeders Triplex underground [Re: George Little]  
gfretwell  Offline


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Joined: Jul 2004
Posts: 9,116
Estero,Fl,usa
Same question. Is the neutral insulated?


Greg Fretwell

#169838 - 10/17/07 07:53 PM Re: Large RV park Feeders Triplex underground [Re: Yoopersup]  
Yoopersup  Offline
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Joined: Mar 2003
Posts: 826
Michigan
Ground not a Problem , Neutrals insulated not a problem, I was curious about the Tri-Plex being in conduit underground?? Conductor fill for one thing I think would be different? Is tri-plex rated to be installed in conduit?? underground . I;ve also seen it done but wondered????


#169844 - 10/17/07 09:32 PM Re: Large RV park Feeders Triplex underground [Re: Yoopersup]  
gfretwell  Offline


Member
Joined: Jul 2004
Posts: 9,116
Estero,Fl,usa
We did this a month ago. What is the insulation type ... USE? Other "wet" type?


Greg Fretwell

#169845 - 10/17/07 09:42 PM Re: Large RV park Feeders Triplex underground [Re: gfretwell]  
Yoopersup  Offline
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Joined: Mar 2003
Posts: 826
Michigan
What if its direct burial triplex??



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