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Breaker switch tripped when ac compressor engaged

After running for few second when I heard the compressor come on, it started popping the power strip breaker. I rest the breaker, turned it back on as as soon as the compressor came on, same thing. Any ideas?

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  • cutteo67 Jul 02, 2009

    The ac unit is turned off from the thermostat inside the house. The breaker switch at the electrical box is engaged. I went to the compressor/pump, I can hear a little humming sound from the compressor. Is this a faulty compressor? I turned on the ac thermostat, I notice some turning noises in the compressor/pump, and within seconds, the breaker tripped. Also, I put my hand on the compressor, it is overly warm (almost hot) to the touch, even left over night with ac off with breaker switch engaged.

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Your compressor seems to be grounded. That is bad news. First make sure all wirings are intact and nothing is bare and grounding to metal. If all seems normal then the compressor is fried.

Posted on Jul 02, 2009

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The power strip is rated too low for the wattage of the unit and that causes the breaker to trip. I would be better for the unit if it were plugged directly into a wall outlet, because there is less a chance of voltage drop which would burn out the unit. They will only tolerate 10% voltage drop before getting into trouble.

Posted on Jul 02, 2009

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