Your response is closest to what we experienced and I now think that most of my problem had to do with the excessive heat, and not knowing that I should have our refrigerator and water heater running on propane rather than electricity, when plugged into 30 amp service and running both a/c's. When I decided to just run one a/c, I did not experience the main breaker switch tripping.
I will have my generator checked out but since I am now home and the temp is 80 degrees, it starts right up without a problem!!
'04 Southwind 32V, 8.1L on W20 Chas. UltraPower Enhanced CAI, Exhaust, ECM
'88 Jeep Wrangler Toad