The first day of my trip we kept tripping breakers while on generator power. This is something new I had not seen before. I did some investigation and the voltage was getting quite low which was leading to high amp draw. I contacted Powertech support and they recommended a new regulator so I had one sent overnight to my next stop.
The next day the regulator arrived so I pulled out the generator to replace the regulator. I opened the electrical box on top of the generator and noticed the wires going to the bus looked funny. I touched one and the insulation fell off. It was then that I realized the grounds and neutral were all loose and several grounds had simply burned off. Luckily, I had the parts to fix everything up. The voltage is much better now and I am not sure if I need to replace the regulator at all.
I was lucky the generator didn't burn up.
Because of vibration, you should be tightening electrical connections once a year.
I'll have to start checking all electrical connections yearly, but that is at least a full day and maybe a full weekend project. I can easily think of over 100 connections to check and some of them will take more time to get to than to actually check the connections.