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  1. #1
    Join Date
    Apr 2008
    Posts
    32

    Default Disposal wiring too short

    Hi all:

    We recently completed some renovations on our kitchen due to a 3 floor flood back in June. The new sink and countertop were last to be finished, and when our garbage disposal was reinstalled, we found that the electric connection/cable to the disposal was an inch or two short for connection to the disposal (due to the slightly different layout of our new sink).

    What would be the best way to reconnect this? Run all new cable to the breaker box, or is there a safe way to 'bridge the gap'? I often call on my FIL for electrical help (he's an electrician), but feel that this is something I can handle on my own.

    Any advice would be most appreciated.

    Thanks
    -Daryl, learning how to keep up with an 80 year old house in PA

  2. #2
    Join Date
    Aug 2007
    Posts
    7,152

    Default Re: Disposal wiring too short

    Disposals are not - should not be - hard wired. There should be a switched outlet under the sink. The disposal itself will have a short power cord that is then plugged into the switched outlet. If this cord is too short, then replace the cord on the disposal with a longer one Any appliance shop or hardware store will have replacement disposal cords.

    As for changing the cord, all it takes is a screw driver. Remove the cover plate on the disposal, note the locations of the existing cord wires. Remove old cord and install new. Reinstall cover plate.
    I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!

  3. #3
    Join Date
    Aug 2009
    Posts
    62

    Default Re: Disposal wiring too short

    Most disposals I have ever seen have been hardwired, in fact of the few dozen I have layed my eyes on from 30 year old construction to 8 year old construction they were all hardwired (including the one installed in my house when it was built in '92).

    As for your best option, if it is to keep the hardwired setup and maintain code, at least as far as wiring practices are concerned, you want to add a junction box. Basically install a junction box in the rear of the cabinet where the disposal is located and run the old wires in, and the new wires out to the disposal. The junction box must remain accessible (otherwise it violates code). As for if you can install the junction box in to the cabinet or it if must be installed in to the wall behind the cabinet (with the access plate in the cabinet) I honestly couldn't tell you what meets code or if both do. Never run in to such a situation in a cabinet.

  4. #4
    Join Date
    Dec 2009
    Location
    Alpharetta, Ga
    Posts
    55

    Default Re: Disposal wiring too short

    Older homes typically were hardwired. In our area many new homes are still hardwired. Generally, a disposal does not come with an appliance cord so you have to buy one. Then you have to do something with the wire hanging out of the wall. Typically, we use a remodel box with a GFI outlet. For this type of work, I recommend a good electrician.

  5. #5
    Join Date
    Aug 2007
    Posts
    7,152

    Default Re: Disposal wiring too short

    Interesting, must be an east coastal thing. Here on the west coast I don't think I've ever seen a hardwired disposal.
    I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!

  6. #6
    Join Date
    Jun 2007
    Location
    Shamokin, Pa.
    Posts
    645

    Default Re: Disposal wiring too short

    Quote Originally Posted by A. Spruce View Post
    Interesting, must be an east coastal thing. Here on the west coast I don't think I've ever seen a hardwired disposal.
    Must be A. S.
    The commonwealth I reside in, hard wiring G Ds is the only wiring practice I have ever seen. Basically Romex poking out of the sink base running up to the unit....
    Last edited by Ernie_Fergler; 12-28-2009 at 03:46 PM. Reason: spellin

  7. #7
    Join Date
    Aug 2007
    Posts
    7,152

    Default Re: Disposal wiring too short

    Quote Originally Posted by Ernie_Fergler View Post
    Must be A. S.
    Now that's just mean!
    I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!

  8. #8
    Join Date
    Aug 2007
    Posts
    7,152

    Default Re: Disposal wiring too short

    I'm curious what the NEC has to say on the subject of hard wire vs appliance cord.
    I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!

  9. #9
    Join Date
    Feb 2009
    Posts
    693

    Default Re: Disposal wiring too short

    Allows it but does not require it. The wall switch serves as a disconnect.

    422.16 Flexible Cords.
    (A) General. Flexible cord shall be permitted (1) for the
    connection of appliances to facilitate their frequent interchange
    or to prevent the transmission of noise or vibration or
    (2) to facilitate the removal or disconnection of appliances that
    are fastened in place, where the fastening means and mechanical
    connections are specifically designed to permit ready removal
    for maintenance or repair and the appliance is intended
    or identified for flexible cord connection.
    (B) Specific Appliances.
    (1) Electrically Operated Kitchen Waste Disposers.
    Electrically operated kitchen waste disposers shall be permitted
    to be cord-and-plug-connected with a flexible cord
    identified as suitable for the purpose in the installation instructions
    of the appliance manufacturer, where all of the
    following conditions are met:
    (1) The flexible cord shall be terminated with a grounding type
    attachment plug.
    Exception: A listed kitchen waste disposer distinctly
    marked to identify it as protected by a system of double
    insulation, or its equivalent, shall not be required to be
    terminated with a grounding-type attachment plug.
    (2) The length of the cord shall not be less than 450 mm
    (18 in.) and not over 900 mm (36 in.).
    (3) Receptacles shall be located to avoid physical damage
    to the flexible cord.
    (4) The receptacle shall be accessible.

  10. #10
    Join Date
    Aug 2007
    Posts
    7,152

    Default Re: Disposal wiring too short

    So then hard wiring would either be a regional issue or the personal preference of the installer?
    I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!

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