We are replacing an older style submersible 3 wire well pump with a newer style 3 wire plus ground. I do not know where to ground the green wire? Is it necessary to extend the wire from the pump all the way to the top and ground it there or can i just ground it to the pump itself? Any ideas? First time home owner... trying to save money and not call an electrician (Im an avionics technician so I have some what of an idea what im doing.) Thanks
All wires coming from the pump should terminated in the Pressure Switch box. Take the green wire from the pump and the ground wire from the house, connect them together with a pigtail wire and attach the pigtail wire to the ground screw within the Pressure Switch box.
It shouldn't be grounded to back to the pump, it should be brought out and grounded either with the house or a separate grounding rod.