Buzzing Circuit Breaker

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  #1  
Old 02-02-08, 01:52 AM
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Buzzing Circuit Breaker

A Cuttler-Hammer 70 AMP circuit breaker in the main service panel buzzes loudly, becomes warm to touch, then trips.

The breaker in question is for the home's central air (electrical) heating unit. Recently, a local heat & A.C. tech suggested that the breaker may be defective.

Do circuit breakers simply go bad?
 
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Old 02-02-08, 02:09 AM
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They can, .......

I would still be inclined to find the cause of failure to prevent re -occurance, and especially on a breaker that big. that is an awful lot of current to say "Maybe " to.
 
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Old 02-02-08, 09:57 AM
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Sometime the breaker do go bad over the time but you mention electric heat in the air handling unit.

The only way you can verify it is read the nameplate of the electric heating unit to see the XX of amp on the nameplate info it will useally listed the min and max breaker size and also with the nameplate it should mention XX KW of electric heat as well.

Merci, Marc
 
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Old 02-02-08, 09:28 PM
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I used to live in a place with electric central heating and the breaker sure buzzed. I'm not saying it's normal--on some other posts people have said the breakers can buzz when they are about to trip.
 
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