Originally Posted by Iceclimber
Last I checked you should always leave the water pump off when on street water.
No harm turning pump on when connected to city water.
Pump will not run unless pressure starts pump which requires low system pressure for switch to close.
45# pump....start would be 30#
55# pump....start would be 40#
65# pump....start would be 50#
Typical 15# differential between start and stop pressure set points