- Reaction score
- northern calif.
I am told that on a single phase 3 wire pump you can use a larger control box on a smaller pump but you can't use a smaller control box on a larger pump. So the situation is I have a 1 1/2hp pump and a 2hp pump in different wells. So as the 2hp pump and well is new this is the one I wish to use, but keeping the 1 1/2hp pump and well as a back up. The wells are approx. 25ft apart. The control box is at the tank in the garage. Today I changed the control box from the 1 1/2 to the 2hp control box, switched the wires and fired up the pump, All is well. when and if I need to use the old 1 1/2hp pump and well do I have to change the control box back to the smaller 1-1/2 HP box or can the larger pump control box be used.