We have a Myers Predator 2-wire, 1HP, 230 V 5 GPM pump installed in our well at our new home. Currently the pump is wired to a small pressure tank at the well with a cord on it so we can plug it in to our saw service and use it during construction. We are in the process of running the water and electrical lines from the well to the house and I have some questions about the wiring. We plan to have an electrician hook this up but we haven't contracted with someone yet. We need to go ahead and lay the wire in the ditch with the water line, so that it can be covered back up. It's a little over 100' from the well to the house so we want to get this right the first time.
I need to know how long the new buried wire needs to be. Will it go from the well to the pressure tank switch or does it need to be long enough to go all the way over to the panel box? We plan to run 12 ga. UF ground, direct burial wire from the pump to the house. Is 12 ga large enough to handle the load with 115' (164' to the panel box) of run?
We also want to be able to add a light in the small well house we plan to build. Do we need to run a second wire for this appliance, since it will be 110v as opposed to the 230v pump or can the electrician connect the light off of the same wire?
Thank you in advance for your help.