Anecdotally, my last RV had a 50 amp service supporting two air conditioners; it was a 34' toy hauler. On the first outing while attempting to run both AC units, one of the two breakers on the Onan 5K generator kept tripping. Hmmm ?? Examining the house breaker panel revealed the idiots at the factory had each breaker for the two AC unit on the same leg. It was an easy fix.