Hi- wondering if you have any tips on figuring out why an isolation transformer on my boat keeps tripping. It has a breaker switch located on the isolation transformer itself, and that keeps tripping while plugged into 50 amp shore power. It is a 50 amp boat. I note that the breaker switch itself seems flimsy when turning it back on. Can breaker switches themselves become weak over time? The boat is about 16 years old...