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Almost Looks Like The RMC Was Not Threaded In The T Condulet! #104748
10/20/03 08:29 AM
10/20/03 08:29 AM
Joe Tedesco  Offline OP
Member
Joined: Oct 2000
Posts: 2,749
Boston, Massachusetts USA
[Linked Image]

OR was it because the rigid metal conduit was threaded into the T Conduit Body made of aluminum?

This was part of a lighting system on a floating dock where boats can be boarded for an ocean cruise, or taxi to the airport.


Joe Tedesco, NEC Consultant
2017 / 2014 NEC & Related Books and Study Guides
Re: Almost Looks Like The RMC Was Not Threaded In The T Condulet! #104749
10/20/03 10:27 PM
10/20/03 10:27 PM
B
Big Jim  Offline
Member
Joined: Jul 2003
Posts: 394
Denver, CO USA
Judging from the condition of the GRC, I vote for massive corrosion.

Re: Almost Looks Like The RMC Was Not Threaded In The T Condulet! #104750
10/20/03 11:20 PM
10/20/03 11:20 PM
T
ThinkGood  Offline
Member
Joined: Aug 2002
Posts: 1,081
Milwaukee, WI
Is any of this listed for use in a corrosive environment, such as near salt water?

Is there such a special listing requirement?

[This message has been edited by ThinkGood (edited 10-21-2003).]

Re: Almost Looks Like The RMC Was Not Threaded In The T Condulet! #104751
10/21/03 07:38 PM
10/21/03 07:38 PM
HotLine1  Offline

Member
Joined: Apr 2002
Posts: 6,917
Brick, NJ USA
Joe:
I'll have to cast a vote that the conduit was "pulled" out of the (probably) aluminum condulet. You said "floating dock"......someone possibly forgot to take that into consideration when they made-up the pipe. Movement, or possibly "contraction" due to the length of the run and the temp when it was installed can factor in also.

John


John
Re: Almost Looks Like The RMC Was Not Threaded In The T Condulet! #104752
10/21/03 07:41 PM
10/21/03 07:41 PM
HotLine1  Offline

Member
Joined: Apr 2002
Posts: 6,917
Brick, NJ USA
Think Good:
Yes, there is PVC coated RGC for corrosive areas. It's a BEAR to work with!!

Sch 80 PVC, if otherwise suitable for the location is the preferred. That is, after checking the spec, plans, and assuring that it's otherwise approved for the intended install. And, you can't forget the expansion joints.

John


John
Re: Almost Looks Like The RMC Was Not Threaded In The T Condulet! #104753
01/04/04 07:56 AM
01/04/04 07:56 AM
R
rizer  Offline
Member
Joined: Jan 2004
Posts: 91
bradenton ,fl.,usa
two dissimilar metals causes galvanic action. is the use of penetrox (or its equivalent) be used and comply with code. as to the installation the lazy electrician probably crossthreaded the pipe and after one thread caught left it that way. I agree that plastibond or ocal should have been used and the condulets cost a fortune.


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