In my previous post, I said that I would try to get a definitive answer on the code requirement for a dishwasher disconnect capability. Well, I spoke to an electrician who works for the town I live in (Barnstable) and he assures me that the requirement applies to replacements as well as new builds, although he says it is sometimes up to the inspector (which I don't find particularly comforting).
To summarize the relevant part of the code:
"All dishwashers must be supplied with a disconnect within sight of the unit... This disconnect can be via a switch or a grounded 3 wire plug and outlet." A circuit breaker in another room, such as the basement, does not meet this requirement.
The switch or outlet may be in a cabinet (under the sink is typical). If an outlet is used under counter, it does not need to be GFCI, since the outlet is not serving the countertops. At Sears in Hyannis, we are talking to our installers to try to get to a minimum cost to add this basic capability at installation time, and the number we are arriving at is about $75 (1 hour labor and parts). Again, if you are doing it yourself under the homeowner's exemption (of course, you obtained the permits and will have the work inspected), your cost will be parts only. Some people see an advantage to installing a 3 prong pigtail and using an outlet to make it easier for servicing, but that's up to you. Either is acceptable.
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