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Old 09-30-2009, 10:20 PM   #1
 
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Breaker


Any ideas why a 60 amp breaker would make a buzzing sound every one to two minutes
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Old 09-30-2009, 10:23 PM   #2
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Does it go to a sub panel? AC....or?

Any flourescent tube lighting?



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Old 09-30-2009, 10:28 PM   #3
 
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breaker


breaker is to heat pump
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Old 09-30-2009, 10:29 PM   #4
 
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breaker


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Does it go to a sub panel? AC....or?

Any flourescent tube lighting?
to heat pump
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Old 09-30-2009, 10:29 PM   #5
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Quote:
Originally Posted by richlee View Post
my breaker to my heat pump makes a buzzing sound every one to two minutes. should i be concerned
yes



Quote:
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the breaker to my heat pump makes a buzzing sound every one to two minutes do you thunk i should replace the breaker
not unless the breaker proves to be defective. Without any further info, I would guess it buzzes when the compressor kicks in. That would be a high current situation. This requires further investigation before condemning the breaker.
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Old 09-30-2009, 10:38 PM   #6
 
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breaker


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Originally Posted by nap View Post
yes



not unless the breaker proves to be defective. Without any further info, I would guess it buzzes when the compressor kicks in. That would be a high current situation. This requires further investigation before condemning the breaker.
Thanks my wife informed me it buzzes about every ten minutes
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Old 10-01-2009, 06:56 AM   #7
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Not seeing it does not mean you don't have a problem but seeing it means you do have a problem.

TUrn off the breaker and unsnap it from the panel. If the bottom contacts and/or the fins in the panel the breaker clips onto are discolored or rough or misshapen, you ahve a loose connection that must be corrected, most likely with a new breaker inserted into a different position.

Turn off the breakers next to the breaker in question and unsnap them. TUrn off the lights. If you see sparking either in or under the heat pump breaker, notably when the heat pump kicks on, there is a loose connection or the breaker is defective.
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Old 10-01-2009, 12:16 PM   #8
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Get it fixed in any case. It might shorten the life of your HVAC stuff.
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Old 10-01-2009, 07:52 PM   #9
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What brand is it? I have heard more instances of Cutler-Hammer breakers doing this than any other brand .....
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Old 10-01-2009, 08:17 PM   #10
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The breaker/bus connection is arcing when the AC kicks on.

Replace the breaker NOW and you will get away cheap. Let it continue to arc and the bus will burn and your panel will have to be replaced.

Turn off the main breaker, remove the panel cover, use a voltage tester to insure the power is off, unplug the breaker and inspect it and the buss where it was plugged in. The breaker is latched in on the outside and plugs in in the middle. Plugs in in???? Whatever. The breaker kind of pivots as it is plugged/unplugged from the center bus.

Here's a burned bus from an AC breaker



Here's a crappy picture of the back of the breaker wher it was plugged onto the bus.


Last edited by 220/221; 10-01-2009 at 09:07 PM.
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Old 10-01-2009, 08:21 PM   #11
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Another test you might do is hook up two incandescent lamps of the same kind, one in the heat pump circuit (hot to neutral) and the other on a different circuit on the same leg of the 120/240 volt system. If the lamp on the heat pump circuit dims noticeably more than the other lamp when the heat pump kicks on, then you probably have a problem with a loose connection or an arcing breaker. Repeat with both lamps on the other leg.
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Last edited by AllanJ; 10-01-2009 at 08:24 PM.
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