I got a call to replace a service cable between the UG meter and the panel. I start to loosen the lugs after killing the power. The folding allen wrench doesn't budge the lug, so I get a 1/2" ratchet. It still doesn't move. The lug screw is cross threaded and has never placed any pressure on the wire. The wire on the other lug only extended about 3/16" into the lug. This is 4/0 AL on a 200 amp main breaker.
Will post photos later.
