I have two houses that chear a water well but the well got the power from one of the houses so I want to know how I can put power also from the second house, they uses only the well ones a day each house, so when each house need water uses there own power whit out making the oter house a short circuit o etc.

The only reasonable suggestion I have is to install an electric sub-meter and split the cost on a monthly (or whatever) basis.

While powering a load separately from two sources is theoretically possible, the cost of the equipment for semi automatic operation would be extravagant. An automatic transfer switch and two source shunt trip breakers, Shunt trip CBs remotely operable for each source from the other source location. And then there will be conflicts when both houses want to use well at the same time, sort of a remote power duel between users

Manual control could be arranged with a transfer switch, but you would have to go out and manually switch between power sources every time you wanted to power the well from the other source.

Or you could install the meter and split the bill

http://www.electricsubmeter.com/emon/kwh-meters/class-1000.htm