Sounds just like a problem I had in February 2018 when were staying a couple of days near Epcot. It was unseaonably hot and humid in Florida for February. We had the 1 A/C running in the late afternoon after got settled in. The CG 30 amp breaker kept tripping when we would run the microwave or TV. I was pretty sure all was ok with my 2017 Class C as we had been out to NM, AZ and NV and never had a problem with the A/C. Since we were going to be at Epcot all day the next day and leave our dog in side, I wanted to be sure the A/C stayed on. I used my 50amp-30amp adapter and switched to the 50 amp outlet on the post. Problem solved. I called the CG office and reported to them the issue the 30 amp breaker.