Welcome to irv2
The advice from DavidMc is good. One thing I sometimes forget is the fridge, ours is automatic and switches to electric when plugged in, if we then turn on the air conditioner it will trip the breaker on the 15 amp house circiut. Another thought; if the batteries are low the converter will draw quite a few amps trying to charge them up, probably not enough to trip the breaker by itself but if something else is on it may contribute to the problem.
'97 Bounder, 32H, Chevy 454; ipd, Bilsteins, Air Lift, Banks, Hendersons, Solar.