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Exception to the 'it isn't stupid if it works' Rule
(sh.itjust.works)
This was in a guesthouse bathroom, there was a showerhead pointed right at it.
It doesn't really even need an exception. Working means disconnecting when more than 20 A are drawn, and this doesn't do that. The rule works just fine, and counterexamples always boil down to someone misunderstanding the design goals and using a bad definition of works.
Yeah, I'd argue that even taken more broadly any shower that kills the occupants cannot be said to "work" by any reasonable definition.
Obviously, we can all think of one very notable and very unreasonable definition, but I doubt that was the intention here.