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  1. #1
    John Stephenson's Avatar
    John Stephenson Guest

    Default Electrical cable insulation cover

    Last edited by John Stephenson; 12-22-2007 at 08:38 AM.

  2. #2
    Join Date
    Mar 2007
    Location
    New Mexico
    Posts
    1,222

    Default Re: Electrical cable insulation cover

    I was always told to remove it because it was a flammable material from inside the panel.

    Jim Robinson
    New Mexico, USA

  3. #3
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    25,317

    Default Re: Electrical cable insulation cover

    With everything else which is wrong in that panel ... I would only mention it in passing, as in ...

    Get a QUALIFIED and LICENSED electrical contractor out to correct all the sh*t in this panel, including, but not limited to: (make list, including that item - but that is the least of their problems).

    Only I always said it nicer in my reports.

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

  4. #4
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    25,317

    Default Re: Electrical cable insulation cover

    Quote Originally Posted by John Stephenson View Post
    I'd just like to know if the sheathing in panel causing overheating to the conductor.
    For practical intents and purposes, no.

    With sophisticated equipment, I'm sure one could measure a slight increase after a while with a load on it, however, it would not be a problem.

    I'm not recalling anything which prohibits sloppy work like that, other than ones own pride in their work (which, obviously, was non-existent there).

    That is, other than the vague:
    - NEC
    - - 110.12 Mechanical Execution of Work.
    - - - Electrical equipment shall be installed in a neat and workmanlike manner.

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

  5. #5
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    25,317

    Default Re: Electrical cable insulation cover

    Quote Originally Posted by Jeff Eastman View Post
    I've wondered why the sheathing wasn't allowed more than 1 1/2 " (?) into panel.
    I keep seeing HIs saying 1-1/2" or thereabouts, any idea where you got it from?

    "Workmanship" would put it such that the outer sheather was trimmed off 'just inside the strain relief clamp'.

    I don't see where it would cause overheating or any other issue.
    I don't see were running an NM cable, sheath and all, up almost to the breaker, then slit the sheath far enough to allow the grounding conductor to reach the grounding terminals, the neutral conductor to reach the neutral terminals, and the hot conductor to reach the breaker. Sure, it would "look" *ugly as sin*, but I don't know what problems it would cause, other than contributing to physical excess fill - but if the sheath puts you into an 'overfill' condition, I suspect it was already overfilled with conductors.

    Anyone have an authoritative source on that 1-1/2"? I mean a *real* authoritative source.

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

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