I recently installed a ceiling fan in a bedroom, and when the fan is active the electromagnet was a little louder than I was use to, but figured it may just be a cheap fan.
However today when I went to label the correct breaker switch (for some reason the bed room one was only labeled living room), I noticed the room got quieter when I tested the breaker to ensure my memory was correct. Upon flipping the breaker back on the buzzing resumed. From there I verified that fan and light were set to off via the wall switch.
Is it normal for a circuit breaker with no load to buzz?
None of the other breakers in my box seem to be making noise.