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  1. #14
    Join Date
    Jul 2000
    Location
    Dallas,Texas
    Posts
    4,984
    NEC Table 300.5

    Assuming the circuit discussed;

    RMC 6" minimum.

    RNC (rigid plastic) 18" minimum.

    If it was under cncrete the depth decreases.

    If it was under a road, driveway, or airport runway the depth increases, etc. etc.

  2. #15
    Join Date
    Jun 2003
    Location
    Florida
    Posts
    9,548
    This is why I asked....I don't have the NEC in front of me, but our electric is buried 36 inches, in plastic.
    If everything was always done "by the book"....the book would never change.

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