Tripping GFCI’s continue to be “diagnosed” as the problem when equipment is faulty — it’s always your fault for foolishly installing one (sarcasm intended).. I,ve had GFCI’s fail in the permanently off position. I’ve seen GFCI’s trip over time in moist environments; that is, the unit is found in the tripped condition, you reset and run your tool normally — then find it needs to be reset when you next show up to use the receptacle.
