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Electrical Discussion of preventative/corrective maintenance and other technical issues regarding your coach's electrical system.

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  #1  
Old 08-18-2018
robertnm robertnm is offline
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Default Buzzing sound by switch -off /gen/50 amp/30 amp

Hello
When running out the generator or connected to shore power there is a loud buzzing sound emminating from the switch area is the normal and if not what is the problem or is there a problem?
Thank you
Cheers
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Old 08-18-2018
badandy badandy is online now
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Not normal! I would unplug the bus/stop generator and check for resistance between all 4 of the wires to start with. You might have a bad switch, shorted wire, etc. There is nothing under there that should buzz loudly.
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Old 08-18-2018
robertnm robertnm is offline
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Hello it makes the same sound when plugged into 50 amp shore power. With the gen off. Do I still suspect the gen on off switch?
Thanks
Cheers
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1951 General American Aerocoach
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  #4  
Old 08-18-2018
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Default Buzzing or humming

I have always noticed a faint humming sound under the kitchen sink which is directly behind the master disconnect switch, I was assuming it was some form of transformer or relay. Maybe we're getting caught up in terminology? Maybe I have a issue also. I'm wanting to hear more about this. Thanks
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  #5  
Old 08-18-2018
robertnm robertnm is offline
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Yes that is where "my" noise is emminating from.
When switched to gen position or 50 amp shore.
Only getting hum noise fairly loud but everything functions fine. A bit annoying and a concern.
Cheets
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1951 General American Aerocoach
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  #6  
Old 08-18-2018
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Turn off the circuit breaker for the ice maker and see if the noise stops.
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Chap and Darra Enfinger
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1982 FC33 (sold)
1986 PT40 8v92
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  #7  
Old 08-18-2018
robertnm robertnm is offline
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I don't have an ice maker ....
Other than the freezer in the fridge.
Ideas?
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1951 General American Aerocoach
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  #8  
Old 08-18-2018
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Quote:
Originally Posted by robertnm View Post
I don't have an ice maker ....
Other than the freezer in the fridge.
Ideas?
Any outlets that are powered by a rediline or inverter?
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Chap and Darra Enfinger
Newton, GA
1982 FC33 (sold)
1986 PT40 8v92
"Sturdy Birdy"
http://www.bbirdmaps.com/user1.cfm?user=352
ce@pinelandplantation.com
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  #9  
Old 08-18-2018
robertnm robertnm is offline
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No rediline or inverter.
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  #10  
Old 08-18-2018
DW SD DW SD is offline
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I had similar in my 83 PT.
Maybe instahot circuit?
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