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Thread: Intersystem Bonding Terminal

  1. #11
    Join Date
    Jun 2003
    Location
    NE (9.1 miles @5.07 Degrees from Winged Horses)
    Posts
    9,700
    We just pulled a lateral to a building where the SE is in the middle of the building. The IBT will be just below the panels connected to the GEC. Anyone want to hazard a guess as to how many connections will ever be made to it?
    Tom
    TBLO

  2. #12
    Join Date
    Dec 2012
    Location
    Placerville, CA, USA
    Posts
    19,284
    Quote Originally Posted by ptonsparky View Post
    We just pulled a lateral to a building where the SE is in the middle of the building. The IBT will be just below the panels connected to the GEC. Anyone want to hazard a guess as to how many connections will ever be made to it?
    Is zero taken yet?

  3. #13
    Join Date
    Jun 2016
    Location
    Virginia
    Posts
    11
    It seems to me that connecting the intersystem bonding terminal to the gas pipe bond would NOT be permitted. The section on IBTs, 250.94 (2011), lists service equipment, service raceways, building disconnects, and the grounding electrode conductor as points of connection.

    250.52(B) says metal underground gas piping systems are NOT permitted to be grounding electrodes.

    Yes, gas pipe gets bonded these days because of manufacturer's instructions and other NFPA guidelines, but the gas pipe and the bonding jumper to it are not part of the grounding electrode system or conductor.

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