Announcement

Collapse
No announcement yet.

Termination of multiple grounding electrode conductors

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    Termination of multiple grounding electrode conductors

    As an electrician I thought I knew the code pretty well. As an inspector, now, I am constantly flipping through my code book to make sure that I was taught/am remembering correctly. Usually I can find what I need, but this time I'm having trouble.
    I looked at a house today where somebody installed a #8 GEC (too small for the 200A service - the building inspector missed this when he did his footings inspection) to the concrete-encased electrode, which the electrician ran to the main panel (service disconnect). He then drove 2 groundrods & ran that #6 GEC to the meter socket.
    250.50 says that all grounding electrodes present shall be bonded together. First, if the foundation GEC is too small, is the rebar still considered a usable electrode? Second, if that GEC were properly sized, shouldn't the two GEC's terminate at the same point? Or can one be in the meter and one in the panel? What section should I be looking at?
    Thanks
    JD

    #2
    The multiple electrodes can be connected at multiple points from the service drop to the service disconnect. The attachment to the CEE needs to a #4 so to use the CEE you would need to chop out part of the footing and attach it.
    Rob

    Moderator

    All responses based on the 2017 NEC unless otherwise noted

    Comment


      #3
      Thank you.

      Comment

      Working...
      X