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Thread: Mulitple Service Disconnects-GEC Connection

  1. #1
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    Mulitple Service Disconnects-GEC Connection

    I have a 4000 amp service feeding a large switchboard with 5 service disconnects. Ahead of the service disconnects I have a buss section to "tap" off to feed the fire pumps and fire alarm service disconnect switches. The lone #3/0 GEC for the switchboard will land in the CT cabinet or tap section ahead of all of the service disconnects. There is a disagreement as to whether or not additional GEC's are required for the fire pump and fire alarm service disconnects. I say no but others disagree. Here's what it looks like on paper:

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    Rob

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    All responses based on the 2014 NEC unless otherwise noted

  2. #2
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    I agree with you that no additional GEC connection is needed...

    Is the GEC connection in the tap section considered accessible to your AHJ?

    Still need a main bonding jumper in each disconnect.

  3. #3
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    Quote Originally Posted by shortcircuit2 View Post
    I agree with you that no additional GEC connection is needed...

    Is the GEC connection in the tap section considered accessible to your AHJ?

    Still need a main bonding jumper in each disconnect.
    Yes, the tap section is after the meter section which is locked by the POCO so the connection point would be accessible.
    Rob

    Moderator

    All responses based on the 2014 NEC unless otherwise noted

  4. #4
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    Wow. So that is what electrical plans look like.
    If you don't think too good, don't think too much.

  5. #5
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    I agree, no other gec landing points required. What is their reasoning for saying there are? Seems like a basic use of the "common location" method.



    Quote Originally Posted by ActionDave View Post
    Wow. So that is what electrical plans look like.
    Yeah seems like I see those once every few years (and never that big) . Usually it's like: " we need a new service. We have no load information for you. We don't know if we want single or three phase. Just wire it"
    Ethan Brush - East West Electric. NY, WA. MA

    "You can't generalize"

  6. #6
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    Why GFP on 208/120-volt service?

  7. #7
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    Quote Originally Posted by shortcircuit2 View Post
    Why GFP on 208/120-volt service?
    No idea, I asked the same question. We have 4-4000 amp services all with GFP. Not sure why they went with 208Y/120 either.
    Rob

    Moderator

    All responses based on the 2014 NEC unless otherwise noted

  8. #8
    Join Date
    May 2018
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    Jamaica and london
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    I am being required to submit an electrical drawing for my home in Jamaica because my panel is greater than 60 amps. The original electrician died of cancer and his wife cannot find his drawings or notes... and he died just after first fix which in Jamaica means I have concrete decking and walls and no notes to see where the conduit is in some cases.luckily, I have been able to track down and draw in all but two of the conduits... but those two are very important runs so am trying to figure out how to run them with new conduits without weakening the structure..lol...
    really wish I had done it all myself from the get go... paid a lot of money to get it to here, using local.. and the stuff may be useless...
    one of my biggest headaches are the conduits I told him I wantedin 3/4 or 1 inch that he ran everything in 1/2 inch... it is not like one can go back and add extra conduits 8n the concrete walls...lol...

    but when hen I grow up I wanna be able to draw neat wiring diagrams like that myself.

  9. #9
    Join Date
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    Quote Originally Posted by shortcircuit2 View Post
    I agree with you that no additional GEC connection is needed...

    Is the GEC connection in the tap section considered accessible to your AHJ?

    Still need a main bonding jumper in each disconnect.

  10. #10
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    Assuming all is within one structure, I think I would agree that no additional GES/GEC would be required. I think if the fire pump was in a separate building of its own but supplied with service conductors from the main building the a GES would be required. Or maybe I'm stating the obvious.

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