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    EST081's Avatar
    EST081 Posts: 1, Reputation: 1
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    #1

    May 10, 2010, 09:37 PM
    Why would diagonally ran grounding wire cause arcing
    The NEC (National Electrical Code) book states that grounding wires should be run verticle or horizontal and that diagonal runs may cause arcing. Why would diagonal runs cause arcing?
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
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    #2

    May 11, 2010, 02:30 AM
    What section of the NEC states that?
    stanfortyman's Avatar
    stanfortyman Posts: 5,598, Reputation: 279
    Electrical & Lighting Expert
    		  
    #3

    May 11, 2010, 03:42 AM

    Really. I know the code pretty well and this is news to me.
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
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    #4

    May 11, 2010, 05:45 AM
    Did a search for the word "diagonal" in the 2008 edition of the NEC, it shows up only once in the entire book, on page 70-69 in Section 225.19 (B), and is not relevant to the question.

    So, the NEC 2008 Edition is not the source of the information stated by EST081.

    I will suspect he/she came across something regarding lightning protection, as the installation of "grounding" cables are to be installed in a particular fashion to help with discharging a lightning strike.

    All we can do is wait for EST081 to get back with more detail.
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