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12 volt but no 110 power.

My mc 40 puts out 12 volts to the battery but wont put out 110 only just enough to make a small light bulb glow

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Your 110 volt regulator is defective

Posted on Oct 07, 2009


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I have a Red Lion submersible pump, drawing water from a lake. The pump has a low voltage charge (about the same as a 12 volt battery), after all power is shut off.. I have even shut off the main breaker...

If you are measuring this with a volt meter, you might be measuring a voltage with a VERY small current that could be coming from the pump motor magnet in combo with the plumbing and minerals in the water...but, that may not matter. To see if this is significant, hook up a 12V test light using an automotive interior light bulb or a turn signal bulb. Try it at night (or at least out of the sun) so you can see if you get a bit of glow. The current may be so weak that it cannot maintain even one volt across the light bulb filament, in which case you can disregard it. You can put your voltmeter in parallel with the test light to measure the voltage with the light bulb load in place.
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