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Difference between 2 wire and 3 wire

PostPosted: Tue Nov 06, 2012 4:58 pm
by lwparchive
Two wire or three wire 4" submersible pumps. Whats the advantage and disadvantage here?

Thanks,

Tom

Re: Difference between 2 wire and 3 wire

PostPosted: Wed Mar 27, 2013 11:46 am
by dlamp67
Three wire pumps require a control box that will contain your start relay and your start/run capacitors. Two wire pumps house the capacitors within the motor housing. If the capacitor goes bad on a two wire pump, then you have to pull the pump and replace the motor. If the capacitor fails on a three wire pump, you just replace the capacitor in the control box.