Originally Posted by lunear
will have to check that, also when using the blowdryer in bathroom, kicks a breaker all the time and when using electric skillet in kitchen does the same thing sometimes
You need to check, but there's probably two circuits for the camper's 120V outlets. On mine, one of those circuits also has the converter on it. The max wattage that any 15A circuit can handle is 1800W if the voltage is at 120V...less if the voltage is lower. Some hair dryers consume 1800W on the max setting so I can see that it may cause a trip particularly if anything else at all is on that circuit. The electric fry pan causing trips may be the same issue.
You could try pulling out the microwave and see if it operates correctly while sitting on the countertop.