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Inactive, Master Electrician
Category: Electrical
Satisfied Customers: 4772
Experience:  Electrical Contractor
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How do I wire a 110 float switch to a 220 pump Its a 220

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How do I wire a 110 float switch to a 220 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. Is it OK to run 1 leg of the 220 800' like that?
All you do is wire the float switch into one of the 220v legs. So pick one and wire the line 220v to one side of the float switch, then the other side of the float goes to the pump.
Customer: replied 7 years ago.
Is it OK to run 1 leg of the 220 800' feet through #12 wire? I think it would be better if you can recommend a contactor or relay that could go between the float switch and the leg of the 220v line to the pump. Can you recommend a specific relay or contactor. I was always told to keep the load on the 2 legs of a 220 equal. What can happen if one leg looses all that juice by going back and forth to the float switch.
Plus to go that distance I would need # XXXXX wire...which is very pricy.
What is the amperage of the motor itself.. Full load amps..
Customer: replied 7 years ago.
5 amps
Flotec 3-Wire Submersible 4in. Deep Well Pump — 1/2 HP, 1 1/4in., Model# XXXXX

Economical, energy-efficient pumps for 4in. inside diameter or larger wells. Pump from depths of 400ft. Patented Floating Stack design resists sand and reduces sand locking. Stainless steel pump and motor housing for long life. Heavy-duty 1 1/4in. NPT discharge connection. Water-filled submersible motor. Precision-molded impellers and diffusers. 230 Volts. Includes built-in check valve. UL approved. 3-year limited warranty. U.S.A.

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Flow (GPH)     600
Volts     230
Amps     5
HP     1/2
Max. Total Head (ft.)     150
Suction Port (in.)     1 1/4
Discharge Port (in.)     1 1/4
Impellers     Precision-Molded
Diffusers     Precision-Molded
Control Box Included     Yes

I see joe is off line

At 5 amps the #14 wire shoud be fine for the 400 feet
Customer: replied 7 years ago.
HI Glenn:

It turns out its 543 feet from the pump-house to the tank. Will that be ok for the one leg of the 220v line to the float & back to the pump on #14 wire?


Thanks, Bruce
Here is what you need to do. Go to your local supply house. Get a 20amp rated 220v general purpose contactor with a 120v coil on it. Then put that in the circuit at the pump. If you need a wiring diagram of how to set this up - let me know and Ill be more then happy to make one up for you.
Customer: replied 7 years ago.
Please send a wiring diagram... Also I am looking at Granger & I am not sure what I need. Could you send a Square D or Granger part # XXXXX the contactor.

Ok - what ill do is make it up and post it here later tonight. I will also include a part number for the contactor.
Customer: replied 7 years ago.
Ok - here is the link to Graingers website so you can order your contactor. The link im providing is the specific part with part number etc. Below you will find your diagram. If you have any questions - just let me know.

Click here for the contactor:

Inactive, Master Electrician
Category: Electrical
Satisfied Customers: 4772
Experience: Electrical Contractor
Inactive and other Electrical Specialists are ready to help you
Customer: replied 7 years ago.
Great Job! Enclosed is an extra$20. Thanks!

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