We build food service equipment. The units are 480v, 3 phase. We test the units by wiring them via temporary drop cord with the leads wired t othe line side of the disconnect. After a few times of this, the leads look like a porcupine. Does anyone know of something that can be crimped or otherwise put on each lead to hold up longer? This is a production setting, so whatever it is, it has to be robust.