20 amp service question

You didn't say but if you are plugging into a home outlet AND you have problems with the house breaker flipping, there may be something else on the same line in the house. We had intermittent problems with this issue when plugging into a friends garage outlet. Finally figured out every time the freezer in his basement kicked on, if our AC was also running, the house breaker tripped. Long answer but Yes to your question.