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Thread: Unprotected 35 foot 8awg subpanel ground

  1. #1
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    Unprotected 35 foot 8awg subpanel ground

    Hey gurus, does anyone know if bare copper ( uninsulated ) grounds are allowed on the side of a building between say an internal source ( such as the new subpanel I'm going to do to replace old fed pacific ungrounded sub in closet ) and the main system bonding point? I'm jammed for time and trying to avoid re reading 250 this afternoon. Many Many thx. Any reference to 250 content areas would be appreciated. Thx again.

    JS
    Last edited by docj67; 12-19-17 at 04:27 PM. Reason: modfiy run length

  2. #2
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    What is a sub-panel ground, are you referring to a GEC? Is this in a separate structure? There should be an EGC run with the sub-panel feeder.
    Rob

    Moderator

    All responses based on the 2014 NEC unless otherwise noted

  3. #3
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    If you are asking can you run a separate EGC to a sub panel the answer is no, it has to be in the same conduit or cable.
    If you don't think too good, don't think too much.

  4. #4
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    reply

    Quote Originally Posted by ActionDave View Post
    If you are asking can you run a separate EGC to a sub panel the answer is no, it has to be in the same conduit or cable.
    thx

    im unused to referring to Grounding Conductor for panels/switch gear as EGC but it makes sense.

    Im new at this level, thx so much. Can u please post NEC loc so I can show my client?

    We r trying to minimize how much wall hacking we need to do but to no avail it seems. Thx

  5. #5
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    Look here:

    300.3 Conductors..
    (B) Conductors of the Same Circuit. All conductors of the same circuit and, where used, the grounded conductor and all equipment grounding conductors and bonding conductors shall be contained within the same raceway, auxiliary gutter, cable tray, cablebus assembly, trench, cable, or cord, unless otherwise permitted in accordance with
    300.3(B)(1) through (B)(4).
    Rob

    Moderator

    All responses based on the 2014 NEC unless otherwise noted

  6. #6
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    300.3(B)
    If you don't think too good, don't think too much.

  7. #7
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    Pssst

    Rumor has it that it is 300.3(B).

    Don't tell anyone, I think it may be a secret.
    "Electricity is really just organized lightning." George Carlin


    Derek

  8. #8
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    THX TO ALL.....

    So grateful to all

    i'm a veteran with small networks/TCP IP/Datacomm

    If i can be of service to anyone pls reach out

    js



    Quote Originally Posted by jumper View Post
    Pssst

    Rumor has it that it is 300.3(B).

    Don't tell anyone, I think it may be a secret.

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