My best guess is still leakage. That said any great swings in humidity or the environment surrounding it? I have also seen GFIC breakers get flaky but assuming the GFIC is working as advertised it will only trip for a current imbalance where Iin does not equal Iout between line and neutral.
I have no clue if this is an industrial environment or shop but if it is an industrial shop environment I would not be too quick to simply remove ground to eliminate the problem. The NEC has pages on the subject but simply put not a good way to "fix" the problem.
Ron
I have no clue if this is an industrial environment or shop but if it is an industrial shop environment I would not be too quick to simply remove ground to eliminate the problem. The NEC has pages on the subject but simply put not a good way to "fix" the problem.
Ron