Electrical Wiring in the Home/breaker


Hi thanks for volunteering your time to questions

I have what I believe is called a mini split breaker, a breaker normal sized but has (2) 15 amp connections. the furnace is one of those connections and kitchen lighting is the second. During AC weather, I first noticed a low humming from the panel. We had our electrcain generally look over the panel and he felt it was in fine condition but gave us a price to upgrade to 200amps and reduce the number of these mini breakers

Here is the question - I realized this one 15amp mini breaker is making the low hum and when I touch the breaker you can feel some vibration... the alignment of the breaker is a bit off... one side is slightly lower than the other

Is this reason for concern or totally normal because it's working hard to power the air handlers blower fan


Robert Wilber
Licensed Philadelphia Electrician
Philadelphia License # 3516 - 16765
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That is properly known as a twin breaker.

If it doesn't know the words it should stay silent. Humming is not normal. Ventilation system fans don't draw much power - not the problem. If you don't like the breaker, replace it. If it IS the breaker, that isn't humming. What are circuit loads of Lighting and heater fan? If you are CERTAIN it is the breaker, change it.

BTW, is your doorbell transformer mounted on the panel?

I can't think of a reason in the world to change the service, unless you are taking up welding. You aren't tripping the main,, are you? What is total connected load?
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Electrical Wiring in the Home

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Robert Wilber


Licensed Philadelphia electrician serving Delaware, Chester, Montgomery and Philadelphia County in Pennsylvania. I install and repair residential, commercial and industrial wiring and lighting. Troubleshooting and repair of problems that stump other people is my favorite. I am willing to help people figure out why things don`t work. I understand motor controls, transformers and machine wiring. I do not teach basics to novices or do free design work.


Experience in the area I have 44 years experience in residential, commercial and industrial electrical construction and repair, 480 volts and below. This is not to be confused with one week repeated two thousand times.

44 years experience in residential, commercial and industrial electrical construction and repair

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