Do you have anything else 'plugged in' to your 110 outlets (example, fans or cooking skillets) and or do you have so many 12v systems going that your converter is 'charging' full blast?
Keep the rest of your 'electrical/12v' usage to a minimum for a while and see what happens.
We have been in campgrounds on very hot days and 'breakers' are popping in a lot of RVs and the main breaker to the Campground blow in one. Campground hosts came around and asked everyone to keep their power usage as low as possibly needed.
2013 Forest River Salem Hemisphere SBT312QBUD
2001 CrewCab F-250 7.3 PowerStroke Diesel
SuperChip, BTS transmission, 6.0 Trans Cooler