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  #1   IP:
Old November 8th, 2008, 01:07 PM
TPnTX TPnTX is offline
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Join Date: Nov 2008
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Default float switch wiring

can someone tell me how to hook up a float switch. My pea brain can't figure it out.

I got a 120v line from the box. Hot, Common & ground.

3 wires from the pump same thing Black White & green

Two wires from the Switch.

wait...I think I just figured it out. I just need to have the float switch the common wire, right?

Common comes from breaker, connects to one wire of the float switch. Other float wire goes to the white on the pump.

Does that sound correct?
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  #2   IP:
Old November 8th, 2008, 05:53 PM
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joed joed is offline
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Location: Welland Ontario
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White to white.
Green to green.
Two blacks to the switch wires.

Never switch the white.
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  #3   IP:
Old November 12th, 2008, 09:29 AM
Gregg Gregg is offline
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Join Date: Nov 2006
Location: Southern Indiana
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black (power supply) to float switch wire,doesn't matter which one.

the other switch wire go to black(hot) to pump
you will be wiring the float switch between power from house to hot to pump
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  #4   IP:
Old December 8th, 2008, 09:45 AM
TheCompany TheCompany is offline
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Make sure you tie the float down if it is a ball bearing switch. They tend to fail more often if they are left to float around in the tank.

The other option is mercury switches which cost more but last much longer.

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