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Joined: Mar 2003
Posts: 849
Y
Member
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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Joined: Jan 2004
Posts: 1,507
G
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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
Joined: Jul 2004
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G
Member
Same question. Is the neutral insulated?


Greg Fretwell
Joined: Mar 2003
Posts: 849
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Member
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????

Joined: Jul 2004
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G
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We did this a month ago. What is the insulation type ... USE? Other "wet" type?


Greg Fretwell
Joined: Mar 2003
Posts: 849
Y
Member
What if its direct burial triplex??


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