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Thread: O CAL CONDUIT

  1. #1
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    O CAL CONDUIT

    Has anyone here ever installed PVC COATED GAL(O CAL). Here is the question...why is it not found in the NEC?

    i have been using this for many jobs and now the construction management company is asking questions. The job specs say to use O CAL conduit on the outside of the building and to stub into thru the foundation wall. We stubbed in at 18" and changed over to EMT. The CM is questioning the use of pvc inside. There is no where in the NEC that states that I cannot do this method. It does not state in the job spec that this cannot be done either. The conduit enters thru the foundation wall into non public space in the basement at approximately 9' above the floor in a 10' high electric closet.
    Anyone have any input.
    Thanks, Sparkcontrol. IBEW Local 3 NYC

  2. #2
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    I have installed it in a manner similar to yours except we changed over to RMC once we entered the building. I would guess that they're concerned about the PVC jacket within the building but I think that the NEC is silent on this given the location that you've mentioned.
    Rob

    Moderator

    All responses based on the 2014 NEC unless otherwise noted

  3. #3
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    Aug 2013
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    Quote Originally Posted by sparkcontrol View Post
    Has anyone here ever installed PVC COATED GAL(O CAL). Here is the question...why is it not found in the NEC?

    i have been using this for many jobs and now the construction management company is asking questions. The job specs say to use O CAL conduit on the outside of the building and to stub into thru the foundation wall. We stubbed in at 18" and changed over to EMT. The CM is questioning the use of pvc inside. There is no where in the NEC that states that I cannot do this method. It does not state in the job spec that this cannot be done either. The conduit enters thru the foundation wall into non public space in the basement at approximately 9' above the floor in a 10' high electric closet.
    Anyone have any input.
    Thanks, Sparkcontrol. IBEW Local 3 NYC
    What, exactly is their concern with the PVC coating? How would that be any different than using PVC conduit inside, or even the use of PVC plumbing pipe? The NEC does not prohibit PVC indoors (with the exception of "theater spaces and similar locations"). Job specs or other locations may dictate otherwise.


    SceneryDriver

  4. #4
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    Oct 2007
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    Quote Originally Posted by SceneryDriver View Post
    What, exactly is their concern with the PVC coating? How would that be any different than using PVC conduit inside, or even the use of PVC plumbing pipe? The NEC does not prohibit PVC indoors (with the exception of "theater spaces and similar locations"). Job specs or other locations may dictate otherwise.


    SceneryDriver
    If it were in a drop ceiling you might have some issues; I doubt it's plenum rated with a PVC coating.

  5. #5
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    Jun 2006
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    Ohio
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    Quote Originally Posted by sparkcontrol View Post
    Has anyone here ever installed PVC COATED GAL(O CAL). Here is the question...why is it not found in the NEC?
    ...
    (O CAL) = Ocal®

    ...Thomas & Betts version PVC-coated rigid steel conduit and accessories: https://s3.amazonaws.com/cesco-conte...96-Catalog.pdf


    For compliance issues, it falls under Article 344. As such, going from a corrosive to non-corrosive environment, changing over to standard galvanized-steel rigid would be considered no change in wiring method under the NEC.
    I'll never get there. No matter where I go, I'm always here.

  6. #6
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    Jul 2015
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    NJ
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    Quote Originally Posted by sparkcontrol View Post
    Has anyone here ever installed PVC COATED GAL(O CAL). Here is the question...why is it not found in the NEC?

    i have been using this for many jobs and now the construction management company is asking questions. The job specs say to use O CAL conduit on the outside of the building and to stub into thru the foundation wall. We stubbed in at 18" and changed over to EMT. The CM is questioning the use of pvc inside. There is no where in the NEC that states that I cannot do this method. It does not state in the job spec that this cannot be done either. The conduit enters thru the foundation wall into non public space in the basement at approximately 9' above the floor in a 10' high electric closet.
    Anyone have any input.
    Thanks, Sparkcontrol. IBEW Local 3 NYC
    People in new York just want to mindlessly spend more money I guess.. like smart said the code treats them the same way. Plastic is only OK when steel manufacturers use it apparently. This just shows who is on code making panels...

    Sent from my SM-N920V using Tapatalk

  7. #7
    Join Date
    Oct 2015
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    US
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    Quote Originally Posted by sparkcontrol View Post
    Has anyone here ever installed PVC COATED GAL(O CAL). Here is the question...why is it not found in the NEC?

    i have been using this for many jobs and now the construction management company is asking questions. The job specs say to use O CAL conduit on the outside of the building and to stub into thru the foundation wall. We stubbed in at 18" and changed over to EMT. The CM is questioning the use of pvc inside. There is no where in the NEC that states that I cannot do this method. It does not state in the job spec that this cannot be done either. The conduit enters thru the foundation wall into non public space in the basement at approximately 9' above the floor in a 10' high electric closet.
    Anyone have any input.
    Thanks, Sparkcontrol. IBEW Local 3 NYC
    I'm going to take a stab being from NYC as well and say your working a dep contract or doing site lighting for nycha

    Sent from my SM-G935P using Tapatalk

  8. #8
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    Quote Originally Posted by nickelec View Post
    I'm going to take a stab being from NYC as well and say your working a dep contract or doing site lighting for nycha
    I read on another forum that all wiring for the NYC port authority must be in 3/4" RMC minimum, and must use all XHHW conductors.

  9. #9
    Join Date
    Jun 2006
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    166
    Quote Originally Posted by peter d View Post
    I read on another forum that all wiring for the NYC port authority must be in 3/4" RMC minimum, and must use all XHHW conductors.
    Yes this is true. All wiring xhhw and all pipe (except for a few exceptions) is rmc and seal tight. Despite your location.

  10. #10
    Join Date
    Jul 2015
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    NJ
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    Quote Originally Posted by Dexie123 View Post
    Yes this is true. All wiring xhhw and all pipe (except for a few exceptions) is rmc and seal tight. Despite your location.
    Bridges in nj generally have this same standard probably inherited from them!

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