Have You Ever Tripped the 50 amp Breaker at the PED ?

We have tripped a 50 amp pedestal breaker, but since it occurred almost immediately after hooking up with a minimal draw, I was sure it was a faulty breaker. I reported it to the office, and since it was late in the day, I told them we were ok for the night using the 30 amp outlet. The next day the breaker was replaced, and we had no further issues.