I have a new term " Hertz Vibration" that referes to the hum , noise, or other audible vibration heard from electrical gear.
note previuous thread;
https://www.electrical-contractor.net/ubb/Forum2/HTML/000235.html I don't know if the term is valid, or if so, the noise measurable ( I beleive ballasts have a sound rating) or how this side effect is produced or anything else....
cranium firmly imbeded in large intestine here...please feel free to call in the jaws of life if needed..I have had the opportunity to be working in a panel
yes, live and hear breakers buzzing under a load, some i have held my finger on and altered the noise level
were's that dutch boy when ya need im'If this is indeed a bona-fide phenomenon, i am curious as to the details, if i have just been gulible i'll go buy more lottery tickets...