While watering my plants the breaker to the pump will trip at various times. It has happened four time over a period of 3 days. I have a Goulds Bruiser submersible pump, Model 7SB07422C and a 50 gallon tank. The pressure switch is set to come on at 40# and go off at 65#. It cycles at about 33 sec- 15 sec on, 18 sec off (which seems fast to me) with the hose bib putting out about 3/4 volume. What things could cause the breaker to trip?