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Thread: CID2 BONDING

  1. #1
    Join Date
    Sep 2016
    Location
    Longmont, CO
    Posts
    169

    CID2 BONDING

    I've got a customer requiring all our AC conduit Meyer's hubs be bonded with a minimum #8 copper.
    these are 15-30 amp, 120/208 volt circuits in GRC connecting to Nema 4/12 enclosures.
    He is citing 250.102(C) specifically and 250.100 generally.
    I agree the hubs must be bonded with an EGC, but don't agree with the #8 minimum.
    thoughts?

  2. #2
    Join Date
    Apr 2016
    Location
    Maryland
    Posts
    265
    You're on the load side of the service not line side.
    Look at table 250.122...#8 is not required for 20-30A circuits.


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  3. #3
    Join Date
    Sep 2016
    Location
    Longmont, CO
    Posts
    169
    any others with an position on the issue, I was appreciate a few more replies as I may share this with my customer as support for my position.

  4. #4
    Join Date
    Apr 2016
    Location
    Maryland
    Posts
    265
    You need to look at Art 501.30. Art 102.102(C)(1) has nothing to do with your scenario-- this is mainly for service entrance conductors. You are downstream, off a LV distribution panel branch circuit at 120/208V


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