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Thread: Single Core AC Cable installation

  1. #1
    Join Date
    Nov 2005
    Posts
    18

    Single Core AC Cable installation

    Hello All
    Another new question. I'm inspecting the construction of a land drilling rig with AC drives.
    I do know that on marine installations the requirement is that single core AC cables must be run in TRIADS for distances of 30 meters or greater and all pentrations must be through a non-ferrus material with non ferris glands.
    I have not been able to find a simular requirement in the NEC.
    Thanks
    ettek

  2. #2
    Join Date
    Feb 2003
    Location
    Illinois
    Posts
    19,179

    Re: Single Core AC Cable installation

    That is a design issue, not a code issue.
    Don
    Don, Illinois
    "It is the first responsibility of every citizen to question authority." B Franklin

  3. #3
    Join Date
    Nov 2004
    Posts
    1,525

    Re: Single Core AC Cable installation

    ettek -

    Take a look at 300.20. It reads about the same, except there is no length requirement. All the conductors have to run together.

    Although, I can't tell you if "land drilling rigs" fall under the NEC

    carl
    Using the code for a design guide is a sign of incompetance

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