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  1. #1

    Wiring to pressure switch

    I need a little wiring assistance. I have a 240 Volt, 2 wire pump and a Square D, 40-60 pressure switch. The 2 hot wires from the pump go to the two center terminals on the pressure switch and the ground of course goes to one of the ground screws. When I run the wires from the breaker box, the black and red (hot wires)go to the two outside terminals, the ground goes to a ground screw. Where does the white neutral wire go in the pressure switch?? Square D makes no mention of the neutral wire in their wiring diagram. Do I just run it to a ground screw?

    Thanks for your help!

    Leonard

  2. #2
    Pump guy speedbump's Avatar
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    No don't do that. The neutral should be capped with a wire nut. It is just there if you need to run something on 115 volts. And that should be on it's own circuit breaker anyway. So just cap it off. A 230 volt motor does not need a neutral for any reason.

    bob...


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  3. #3
    quote:Originally posted by speedbump

    No don't do that. The neutral should be capped with a wire nut. It is just there if you need to run something on 115 volts. And that should be on it's own circuit breaker anyway. So just cap it off. A 230 volt motor does not need a neutral for any reason.

    bob...

    If I have to cap the wire with a wire nut then do I even need to attach the neutral wire to the neutral bank in the breaker box?


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  4. #4
    Pump guy speedbump's Avatar
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    I wouldn't hook it up if you don't need it. Just cap it at both ends. It will be there if you need at a later date. Pat is the one that knows electric stuff, maybe he has a better idea.

    bob...


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  5. #5
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    That will work fine Bob.

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  7. #7
    Past Newbie
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    I cheat. I have several books on advanced wiring and the National Electrical Code on CD. [88]

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