My electrical setup: 100 amp circuit breaker (CB) in the panel in side the house. 100 amp sub panel at the pool pad. All pumps are wire 230v.
I have a Intelliflo VF pump for filtration. That pump runs with no issues.
I have a 2 hp Whisperflo for the waterfall and a WhisperFlo FX pump for the spillover spa jets.
All pumps installed in June 2013.
I have noticed that whenever I run the waterfall pump the CB inside the house trips after a period of time.
It seems like the time until it trips has shortened since the pump was installed.
More background: When the pump was installed it was very noisy. Three inch pipe was used on both suction and return for the pump. The PB contacted a Pentair rep and he said the pump was "freewheeling" due to lack of pressure. I have valves on both sides of the pump. I partially closed the return side valve to buildup pressure and that did quiet the pump.
This also occurs when I run the spa jet pump. The spa jet pump, however takes a very long time to cause the CB in the house to trip.