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    Combs62's Avatar
    Combs62 Posts: 1, Reputation: 1
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    #1

    Jul 2, 2013, 04:56 PM
    Why would new square d pressure switch keeps blow breaker
    We replaced our pressure switch and it blows the breaker every time we flip the breaker. The wires are correct.
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
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    #2

    Jul 2, 2013, 06:25 PM
    Unless the pump is seized and overloading breaker, you have wiring that is incorrect. Why did you change the switch? Was it tripping the breaker too? Sure you didn't get input wires backwards?

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