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Old 05-29-2012, 09:07 PM   #1
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electric hum sound when on shore power

We have a 2006 dp and have owned it since new, always noticed a small electrical hum when plugged in today we didnt here it anymore should we be concerned? And if so what should we look for?
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Old 05-30-2012, 04:10 AM   #2
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The hum was coming from one or both the transfer switch and as long as you get power into the coach now you are fine. The other would be from the inverter/charger and you would be charging the batter bank. Check to be sure you are still charging the housem batteries and if not check circuit breakers in distribution pane as on the inverter itself.
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Old 05-30-2012, 05:39 AM   #3
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One thing to check, is to make sure ALL connections are tight inside the transfer switch!! Ours was making the humming sound, I didn't check it and it finally burnt the switch to a crisp. All over loose connections. If you decide to check it make sure ALL electrical is off and not connected.
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Old 05-30-2012, 08:59 AM   #4
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I will suggest a simpler solution (I had this happen to me) Check to see if your sound equipment is off. One of the grandkids had turned on the radio in the bedroom. It was off station and the volume turned down, but the speakers still had a hum with the florescent light on. I have not idea why it did it or the dynamics of such electrical occurances.
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Old 05-30-2012, 10:03 AM   #5
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Thanks guys we will check the things you all spoke of everything seems okay just no more hum
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Old 05-30-2012, 11:41 AM   #6
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Battery chargers hum as well, and they are not always required.
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Old 05-30-2012, 01:10 PM   #7
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I'd think it would be the inverter/charger or the converter/charger.
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Old 05-30-2012, 01:58 PM   #8
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I get a hum from my inverter/converter when she is charging up at 100 amps, perfectkly normal.
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