Where I have been, they were code compliant for at least the last 40+ years. Furthermore the ones I saw were stamped UL approved, but made in china. Most building departments accept the UL approva as meeting their code. Have not lived in a jurisdiction that outlawed the design, but I replace them in every place I own with the screw on ones.
Test them with a 12 plus amp drawing device for a short minute or so and see if they get hotter. Having one that fails causes me to buy a couple boxes of replacements and make messes in every room swapping them out.. not sure how this works with 20amp breaker and 16 gauge house wiring........
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casual notes from the underground:There are some "experts" out there that in reality don't have a clue as to what they are doing.
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