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Best way to hardwire Disposal and Dishwasher

18178 Views 6 Replies 4 Participants Last post by  theatretch85
What's the best way to hard wire a dishwasher and garbage disposal? The previous owners ran romex through a piece of 1/2" flex conduit and secured the end of it inside the Sheetrock, basically just using it as a sleeve for the romex as it exits the wall. Is this method ok? Or can I just run the romex out the wall into the appliances like with the microwave/range hood? Or would it be better to install a metal switch box for the disposal and break out the two circuits to the dishwasher and disposal in the flex conduit stuff directly? This would of course mean more work, but I have the wall open right now.

They had practically ALL the outlets in the kitchen wired off one 20 amp circuit with the other circuit feeding the dining room outlets. Fridge was also on the same circuit as the kitchen countertop outlets. Range hood was wired off the master bedroom outlets. Now I am running 2 circuits for just the counter top outlets, one for the microwave, and one for the fridge. Then the dishwasher and disposal were already on their own circuits, and lights on another.
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Well just to let everyone know, I ended up replacing the switch box with a metal 4" J-Box with a 2 gang 1/2" mudring. Then I ran 2 lengths of 3/8" BX (which has a insulated ground) from the metal box through the wall and out the Sheetrock where one will be used under the sink for the disposal and the other under the counter for the dishwasher. In the event I need either one on an outlet, I can always surface mount a box in the cabinet and run the BX into the box and put in an outlet.

The dishwasher at my parents place is hardwired, where the disposal has a cord attached and plugged into an outlet under the sink. I have not seen where a dishwaser has been plugged in with a cord in a permanent installation.

The Microwave circuit I ended up feeding into a receptical box that will land in the cabinet above it. I believe what was in place prior was just a range hood, and I will be installing a range hood/microwave.
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