Can a dishwasher be wired to a kitchen counter small appliance receptacle circuit?
Wednesday, July 11, 2018
The kitchen small appliance circuits are allowed to only serve countertop and wall receptacles in kitchen, dining room and pantry, except that they can also be used for a refrigerator receptacle. However, the refrigerator may also be on a separate circuit if you want. Any installed appliance (meaning secured in place and not readily moveable) like a dishwasher is required to have a separate circuit.
Although these requirements have been in place for quite a while, other rules for kitchen circuits have been gradually added over the past several decades:
- A kitchen requires minimum of two 20-amp small appliance circuits, and they must be GFCI-protected.
- Dishwasher circuit must now be GFCI-protected, with cord/plug to a receptacle. If the receptacle contains the GFCI-device, it must be accessible (not behind the dishwasher). The access requirement is usually resolved by putting the GFCI-receptacle on the back wall of the cabinet under the kitchen sink.
- A dishwasher and disposal can share a single circuit, but only if the combined rating of the two appliances does not exceed the circuit amperage rating.
Also see our blog post Is a refrigerator required to have its own dedicated circuit?
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