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Old 08-21-2012, 10:35 PM   #1
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Dishwasher electrical




As I correct some issues with my dishwasher plumbing, I'd like to install a surface mount outlet in the back bottom right corner and have the dishwasher on an appliance cord rather than hardwired. That is 14/2 romex on it's own 15A circuit in the picture. Just to verify with those that know the NEC better than I, the outlet does NOT have to be GFI protected, the appliance cord can be no longer than 4 feet long from the back of the dishwasher, and the outlet box does NOT have to be water resistant, correct? If all that is correct, than what would be the best kind (brand?) of surface mount box to use, and would there be any advantage to mounting the box on the wall vs the floor? I realize that if the dishwasher starts gushing that water in the electrical box will be the least of my worries.

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Old 08-21-2012, 10:41 PM   #2
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Go to the big box store, the electrical supply house, or the hardware store and find one you like. Make sure that you have enough clearance for a surface mounted box. And no, it does not have to be GFCI protected nor waterproof.

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Old 08-21-2012, 10:42 PM   #3
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I would never install a receptacle behind the dishwasher.
I would put it in the cabinet on the left or right side.
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Old 08-21-2012, 11:59 PM   #4
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I'm not sure why you want to cord and plug the dishwasher?


If you do and you want to strictly go by the electrical codes the power cord you use must be listed for a dishwasher ..... you will even get a strain relief clamp with it ..

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Old 08-22-2012, 07:38 AM   #5
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I'm not sure why you want to cord and plug the dishwasher?
I'm wondering the same thing. I see no possible benefit from doing so.
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Old 08-22-2012, 08:03 AM   #6
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The cord and plug is your disconnect instead of installing a breaker lock or a switch.
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Last edited by Jim Port; 08-22-2012 at 08:25 AM.
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Old 08-22-2012, 08:16 AM   #7
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Some localities require a disconnect. This can be a plug and cord or a switch located in the cabinet back-splash.
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Old 08-22-2012, 09:38 AM   #8
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Quote:
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The cord and plug is your disconnect instead of installing a breaker lock or a switch.
I would opt for a wall switch and then land on the dishwasher as a hardwire. I think I like the wall switch for families with toddlers. This would be a nice convienent way to deenergize the dishwasher when not in use.
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Old 08-22-2012, 09:59 AM   #9
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Some would also debate the usage of NM unsecured under the DW as not meeting the requirements and/or subject to damage.
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Old 08-22-2012, 10:11 AM   #10
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Quote:
Originally Posted by stubie View Post
I would opt for a wall switch and then land on the dishwasher as a hardwire. I think I like the wall switch for families with toddlers. This would be a nice convienent way to deenergize the dishwasher when not in use.
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Some would also debate the usage of NM unsecured under the DW as not meeting the requirements and/or subject to damage.
Actually I did both in my house: I have a switched receptacle under the adjacent sink base cabinet with an appliance cord feeding the dishwasher.

I do not have a garbage grinder but you could switch the other half of the receptacle for one.

Kills a number of birds with a few stones.
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Old 08-22-2012, 05:43 PM   #11
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I was going to do this to simplify hookup, simply plug/unplug vs. laying on the floor un-wiring the connection. Plus the romex is a little short for my liking when I get it pulled out far enough to have access to the wiring. I was thinking surface mount box so I could run the romex right into the box.

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Some would also debate the usage of NM unsecured under the DW as not meeting the requirements and/or subject to damage.
Jim could you clarify this for me a little bit.
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Old 08-22-2012, 06:22 PM   #12
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it looks like you have enough wire to run it into the cabinet. i would recommend installing the outlet inside the cabinet, then make a hole for the DW plug.

Jim was pointing out the wire "could" be subject to damage from dishwasher movement.
although unlikely, you may consider protecting the wire with conduit or wire-mold where its exposed behind the DW.
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Old 08-22-2012, 07:39 PM   #13
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I pretty much always rough in a a receptacle in the sink cabinet for the dishwasher, meets the disconnect requirement, and since i mostly work in high end homes, they buy dishwashers that come with cords pre installed from the manufacture.

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Old 08-22-2012, 08:05 PM   #14
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Another point would be that the cable should be secured within 12" of the junction box. If you secured the cable it would limit the amount of travel when installing or removing the DW.

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