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Bonding/Grounding Question

Discussion in 'Electronic Design' started by MFudalla, Sep 11, 2012.

  1. MFudalla

    MFudalla Guest

    A question for anyone here familiar with Bonding and Grounding requirements
    as relates to Machinery and Machine Tools.

    If I have equipment with 480VAC and 24VDC, what are the Bonding and Gounding
    requirements for a remote pushbutton box that only contains 24VDC and only
    connects to the PLC and 24VDC power supply at the other end?

    Citing an NEC article number or other code (UL508A, NFPA 79, etc.) reference
    would be helpful and steer me in the right direction.

    Your comments are appreciated.
     
  2. Robert Macy

    Robert Macy Guest

    For citing, the best is the Product Safety Engineering Society and EMC
    group hosted by the IEEE
    You do not have to be an IEEE tojoin the forum and answers come
    instantly from EVERYWHERE.
    Website: http://www.ieee-pses.org/
    If you can't get access, let me know.
     
  3. ehsjr

    ehsjr Guest

    In general: protect the cable to the remote from physical damage.
    If using metallic raceway for that, the raceway must be grounded.
    If the remote push button box is metallic, it must be grounded.

    The details of your installation and the location can make a
    difference, thus the general answer.

    Ed
     
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