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Old 12-07-2006, 06:15 PM   #1
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I need some help with my generator. It starts fine and runs good. But it is putting out about 164 volts. I Think it is the voltage regulator but am looking for input from others.
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Old 12-07-2006, 06:15 PM   #2
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I need some help with my generator. It starts fine and runs good. But it is putting out about 164 volts. I Think it is the voltage regulator but am looking for input from others.
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Old 12-07-2006, 06:45 PM   #3
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How are you measuring that? 164 volts is roughly the peak value of the sine wave but the RMS value should be lower. That's assuming you are getting 60 cycle current.

There really is no "voltage regulator" that I am aware of - the windings on the armature pretty much govern the output, though it depends on the motor RPMs to make it come out right. If the motor is not turning at the right RPMs, you won't have 60 cycle current and your meter may not show the right AC voltage.
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Old 12-08-2006, 06:59 AM   #4
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You also should note that the unloaded voltage is higher than the loaded voltage. Have you been adjusting the Onan to speed it up? Is the voltage that high measured at a outlet? Does it reduce after the generator runs a little?

Maybe the previous owner turned the RPMs up to handle the load of the AC/ACs and you will see the voltage drop when they are turned on. Obviously the voltage you indicate is way too high for general operation.
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