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Thread: using conduit as EGC - getting 30 ohms

  1. #11
    Join Date
    Apr 2003
    Location
    California
    Posts
    18
    Quote Originally Posted by petersonra View Post
    if you have 450 feet of conduit the resistance should be a lot less than 30 Ohms. How are you measuring the resistance.
    They connected a #8 wire from one end of the conduit to the meter and then the meter to the other end of the conduit. Measured the total resistance and subtracted the calculated resistance of the wire. I didn't do the calculation. I need help with that too...

  2. #12
    Join Date
    Jun 2003
    Location
    NE (9.1 miles @5.07 Degrees from Winged Horses)
    Posts
    10,205
    Sounds like new conduit time.to.me.
    Tom
    TBLO

  3. #13
    Join Date
    Oct 2007
    Location
    New Jersey
    Posts
    6,212
    Quote Originally Posted by art View Post
    it's underground and pretty old. Most likely collapsed somewhere along the way
    If that is in fact the case, you probably have a collection of bits of conduit flying in loose formation, hence the very high resistance.

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