How do I wire a 110v float switch to a 220v pump? Its a 220 v 1/2 hp Franklin motor on the pump. I have a 400 ft run on #14 wire to the float switch. Where on the pump controler do I wire in the float switch? Or what is the simplest way to use this float switch with this pump?
Since the switch is just a controller, not a disconnect it doesn't need to break both legs. The only question is whether it is rated for
240v and enough HP.
You just wire in series with one of the pump leads
"Pump Controller" implies that this may be a 3-wire motor. Any control device, such as your float switch would need to be wired in one of the 2 incoming Line wires to the controller.
Can you tell us a bit more about the application of this float switch to a "well pump" ?
Jim
My guess it is a aerators tank. I have 3 float switches in mine
I would purchase a relay and use the float switch to control the relay coil and run the power through the main contacts.
I agree, I don't think I'd want 800 feet of #14 breaking one of the legs to the pump
Totally agree about using a relay also. I would use a 240-24 volt transformer and a 24 volt contactor. With 24 volt, there would be less of a shock hazard and you could use pretty much any kind of wire between the float switch and relay-- thermostat wire, even telephone wire (use the kind with 4 wires and tie wires together so you have a pair of two wires paired together. Larry
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