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-   -   hard-wiring for dishwasher (http://www.diychatroom.com/f18/hard-wiring-dishwasher-7324/)

damckinney 03-23-2007 08:30 AM

hard-wiring for dishwasher
 
This is for a new dishwasher installation..no outlet..I purchased the metal box and electrical cabling...is it safe to run the connection from the gfi located above the kitchen sink?

Mike Swearingen 03-23-2007 01:48 PM

A dishwasher is supposed to be on a dedicated circuit. Most call for a 15 amp breaker, which allows for 14/2-with-ground wiring. If you need to run a new circuit, however, I would run 12/2wg off of a 20 amp breaker in case someone ever wanted to install a heavy duty dishwasher.
I would not connect it to a gfci outlet, but I'm not a pro electrician.
Mike

KUIPORNG 03-23-2007 02:11 PM

yes my experience also indicates dedicate circuit as the builder leave a rough in wire in the panel box which is for the dish washer... then of course, the dish washer installer simplier pigtail it with one of the 15 amp circuit ... I correct this myself...

jwhite 03-23-2007 04:19 PM

The recepticle above the counter near the sink is on what is called a "Small Appliance Branch Circuit" These circuits feed the recepticles that are required by code for countertops and walls in the kitchen, dining room, pantry, and breakfast nook.

NO other loads may be placed on the SA circuits.

TonyD 04-06-2007 10:32 AM

Could you set up a dedicated 20amp receptacle behind the dishwasher and then run a 12/2 round wire from the DW hook up and plug it into the receptacle.

TonyD

jwhite 04-06-2007 11:03 AM

Quote:

Originally Posted by TonyD (Post 39830)
Could you set up a dedicated 20amp receptacle behind the dishwasher and then run a 12/2 round wire from the DW hook up and plug it into the receptacle.

TonyD

You certainly should have a dedicated 15 or 20 amp rec for the dishwasher. The type of wire that you are talking about is SO cord and just to confuse things, when they name appliance cords they count the ground (unlike building cables) so it would be a 12-3 SO cord.

Some AHJ do not consider this to be an accessable disconnect because the dish washer is usually screwed to the cabinet. It is a better idea to put the rec in the cabinet just next to the dishwasher.

side note: When the ground wire is insulated and colored green, it is counted in the wire name. eg: 12-3 SO has two hots and a ground. When the ground wire is bare it is not. eg: 12-2 w/g NM-B

TonyD 04-06-2007 12:03 PM

JWhite,

Thanks for the info...I knew that you needed a dedicated line, I just wasn't clear if you could wire it to a receptacle.

thanks

TonyD


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