in some fuseboxes i have seen there is a fuse for the hot wire and a
separate fuse for the common wire. power to an appliance or lamp can
fail depending on how it was wired, and what connections and devices
are worn/old/loose. perhaps the lamp was still lit by hot to earth
ground, when the dishwasher had blown only its common fuse.
inspect also the cartridge fuses on the main and range disconnects.
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