Debris in the impeller will jam the pump and eventually trip the breaker. I
would also check the nameplate on the pump to determine the amperage draw of
the pump, then be sure the circuit is dedicated or at least not overloaded
with other devices, lights, outlets etc.



wrote in message
...
Our basement flooded with about 1" of water in the unfinished area
(concrete) and most of the carpeted area wet. This was after a lot of
rain and melting snow in the last few days in Detroit. Turned out the
breaker on the sump pump outlet had tripped and caused it to stop
pumping. I want to know some reasons why the breaker tripped so I can
prevent this from happening again. Is it just because the pump was
running a lot due to large volume of water, is it due to a failing
pump, could there possibly be a short, or what else can trip a
breaker? I did notice some pebbles getting stuck in the pump's inlet
area. Don't know if they can get sucked into the pump and cause the
motor to draw too much current or is there some sort of screen which
keeps large debris out?? The pump and switch are both functioning with
the breaker reseted.

The pump is about 8 years old Hydromatic with a diaphragm switch
(piggyback electrical plug style). The switch broke in December so I
replaced it with a float style from Lowes (also piggyback electrical
plug style). I would imagine the float switch is pretty simple and not
much can go wrong with it. Any suggestions would be appreciated.