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Thread: Electrical Equipment Pad/Working Space Violation

  1. #21
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    Quote Originally Posted by Dale001289 View Post
    I believe most AHJs would disagree with you. Besides most housekeeping pads are nowhere near 6”


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    In 40 years it has never been even a discussion with an inspector on any job that I have seen.
    This is a non issue in New England.

    The OP mentioned a 20” extension. That is too much and should be a violation.
    It should be 3’ to 4’ depending on the condition, or 6”.
    Tim
    Master Electrician
    New England
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  2. #22
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    Quote Originally Posted by tkb View Post
    In 40 years it has never been even a discussion with an inspector on any job that I have seen.
    This is a non issue in New England.

    The OP mentioned a 20” extension. That is too much and should be a violation.
    It should be 3’ to 4’ depending on the condition, or 6”.
    It’s a judgement call.
    I’ve seen it go both ways - depends on QA/QC inspectors. In Petro-chem facilites they tend to be less tolerant.


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    Little off the subject here but...

    Do you tie your house keeping pads with rebar into the slab below or do you just "float" them?

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    Quote Originally Posted by shortcircuit2 View Post
    Little off the subject here but...

    Do you tie your house keeping pads with rebar into the slab below or do you just "float" them?
    Not sure - but I believe it’s preferred to tie them in rather than floating in order to prevent pad from cracking


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  5. #25
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    Quote Originally Posted by shortcircuit2 View Post
    Little off the subject here but...

    Do you tie your house keeping pads with rebar into the slab below or do you just "float" them?
    They are usually installed with dowels drilled into the supporting slab with rebar in the housekeeping pad, but not always.
    Tim
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  6. #26
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    Quote Originally Posted by tkb View Post
    In 40 years it has never been even a discussion with an inspector on any job that I have seen.
    This is a non issue in New England.

    The OP mentioned a 20” extension. That is too much and should be a violation.
    It should be 3’ to 4’ depending on the condition, or 6”.
    I agree, standard construction.

    Tis a technicality that it is a violation per se, but ignored, similar to objectionable current at a service, necessary evil but allowed.
    "Electricity is really just organized lightning." George Carlin


    Derek

  7. #27
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    Quote Originally Posted by Dale001289 View Post
    It’s a judgement call.
    I’ve seen it go both ways - depends on QA/QC inspectors. In Petro-chem facilites they tend to be less tolerant.


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    Kinda special area, normal commercial installation usually allows the 6” pad extension.
    "Electricity is really just organized lightning." George Carlin


    Derek

  8. #28
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    Quote Originally Posted by Carultch View Post
    Can an equipment slab count for the 6" rule per 110.26(A)(3), just as a raceway can penetrate the workspace up to 6"? The article states "other equipment associated with the electrical installation", and a housekeeping slab specifically built for electrical equipment is "associated with the electrical installation".
    I suppose it is a judgement call, I also think most inspectors will consider it to be associated with the electrical installation though. If you didn't have the gear there you wouldn't have that specific slab there.

    Someone messes up and makes it 20" too wide, now you have a problem with working clearances. Make it 36" inches too wide, you may not get what was intended but still possibly comply with working clearances.
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  9. #29
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    Quote Originally Posted by jumper View Post
    I agree, standard construction.

    Tis a technicality that it is a violation per se, but ignored, similar to objectionable current at a service, necessary evil but allowed.
    That's what I see. Who really cares if it's a technical violation, we're talking about the floor. I've never seen a pad that wasn't a "violation". In my experience no one really cares about the pad in the working space.
    Rob

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    All responses based on the 2014 NEC unless otherwise noted

  10. #30
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    Quote Originally Posted by infinity View Post
    That's what I see. Who really cares if it's a technical violation, we're talking about the floor. I've never seen a pad that wasn't a "violation". In my experience no one really cares about the pad in the working space.
    With MV switchgear, you could have an issue with the truck and removal of CB’s.
    6” is not a big deal but beyond that would be


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