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Buzzing coming from panel

Discussion of batteries, chargers, wiring, generators, distribution panels, battery switches, etc.
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Buzzing coming from panel

Postby Carcare » October 1st, 2016, 4:39 pm

Hi all, is it normal to hear a buzzing noise coming from electrical panel when hooked to shore power ? It's not loud just noticeable.

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Re: Buzzing coming from panel

Postby bud37 » October 1st, 2016, 5:12 pm

Could just be your battery charger, can you find it and shut off then listen....thats all I can think of ..... :beergood:
The above is strictly my opinion always based on years of doing...remember to support local business , it pays back.

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Re: Buzzing coming from panel

Postby Viper » October 1st, 2016, 9:09 pm

The charger is deffinitely a possibility as sound has a funny way of traveling through a boat. Some accessories are also typically mounted behind the panel such as gavanic isolators, TV antenna controllers, circuit solenoids, etc. Depending on the type of breakers you have, they can hum also. If there are no accessories behind the panel, and you have eliminated the charger as a possibility, try turning off one breaker at a time and see if the buzzing goes away. If it does when you turn one off, that will be the breaker you need to replace.
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Re: Buzzing coming from panel

Postby mjk1040 » October 2nd, 2016, 7:45 am

May I suggest unhooking all shore power and even shutting off the DC power and opening your panel and check for any lose or corroded connections to any breakers, relays etc. first. Also if you have volt and/or amp meters on your panels are you getting good reading. I saw a lose neutral at the boat end of the shore power plug melt on a brand new boat last year. Bad neutrals and grounds can be an issue also. Mike
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Topic author Canada
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Re: Buzzing coming from panel

Postby Carcare » October 2nd, 2016, 2:33 pm

Thanks for the input. I'll check out those suggestions.
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Re: Buzzing coming from panel

Postby mjk1040 » October 3rd, 2016, 6:06 am

Please let us know what you find! Mike
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Re: Buzzing coming from panel

Postby RGrew176 » October 3rd, 2016, 10:52 pm

mjk1040 wrote:Source of the post Please let us know what you find! Mike



I second that thought. Someone else down the road may have the same problem and we can all learn from your experience here.
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