The dock at my marina is very sensitive to ground faults and today out of no where the March pump on my Cabo quit working. When on shore power it instantly trips the breaker at the dock. Instantly when switch on. With the Generator it won't trip but it doesn't pump any water so something is going on. When I disconnect the pump and turn on shore power no issues with breakers. So the pump has something that is causing an issue internally. Should I investigate further or is it pretty strait forward.... order a new pump? From what I have read March is a good pump. After just a few months of owning the boat I have not had time to render an opinion so looking for some input from the wise members here on YF. Thanks.