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  1. #1
    Join Date
    Mar 2007
    Location
    Tampa, Fl
    Posts
    155

    Default Romex through Furnace cabinet.

    Furnace was installed with romex running in one end, through the furnace cabinet and enters the junction box/connection point on the other side. At best, I am thinking best practice would be to bring it in on the side of the junction box. But is this allowed?

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  2. #2
    Join Date
    Mar 2007
    Location
    Spring Hill (Nashville), TN
    Posts
    5,847

    Default Re: Romex through Furnace cabinet.

    Not having the wiring diagram for that unit, I would have to say it is wrong based on common sense! The area that the NM cable is around might get pretty darn warm and I don't think it is rated for the heat that will be in that area. They really had to work hard to do it that way!

    Is that flex vent pipe rated for use on this type of unit?

    Scott Patterson, ACI
    Spring Hill, TN
    www.traceinspections.com

  3. #3
    Join Date
    Mar 2007
    Location
    Columbus GA
    Posts
    3,746

    Default Re: Romex through Furnace cabinet.

    I don't think that running the cable like that is a problem.
    I do see a problem with the unit sitting on the pan. If (when) the pan fills with water, the water will be inside the unit.

    ' correct a wise man and you gain a friend... correct a fool and he'll bloody your nose'.

  4. #4
    Join Date
    Mar 2007
    Location
    Tampa, Fl
    Posts
    155

    Default Re: Romex through Furnace cabinet.

    Hi Rick,

    It is actually up past the flood rim of the pan, you just cant tell from the photo. The furnace across from this one had a reversed pitch flue, so I called them both out for review with special attention to the romex. I am leaning towards improper install. Otherwise, installers could take liberty and run the romex wherever they pleased in the cabinet. There are clearly some areas in that cabinet that installer wiring should stay away from.


  5. #5
    ray jackson's Avatar
    ray jackson Guest

    Default Re: Romex through Furnace cabinet.

    Most manufacturers have provisions for the junction box to be moved to either side for this exact reason. All the wiring within the cabinet has been factory tested to function in that state. The installers romex was not present for those tests.


  6. #6
    Phil Narron's Avatar
    Phil Narron Guest

    Default Re: Romex through Furnace cabinet.

    Are not all holes supposed to be sealed and the wires coming out of it have a garment too?


  7. #7
    David Bell's Avatar
    David Bell Guest

    Default Re: Romex through Furnace cabinet.

    The only holes on this unit that need to be sealed are on the blower compartment, where the low voltage wires enter. The burner compartment does not need to be sealed as combustion air is drawn in through any openings. The romex, while not beautiful, is ok.


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