just brew it! wrote:So what does it mean when a breaker panel makes a buzzing noise? I got it to stop by using some "percussive maintenance" (gave it a couple of good hard whacks with the palm of my hand), but should I be concerned?
mnecaise wrote:Some new arc fault detectors have small transformers in them, which could theoretically hum.
just brew it! wrote:None of them were warm, but the tone of the hum did change slightly when I touched one of them (before I whacked the panel). The hum has not come back.
rogue426 wrote:This happened about a year ago to me, the buzzing was very loud. It turned out to be a short , had an electrician disconnect said wire and viola no more buzzing and no more tripping breakers. Is there a switch or plug that once had power and now doesnt?
Most household main panels have a small transformer strapped to the side for the doorbell circuit. Try poking that and see if it is loose.ludi wrote:it's also possible there's a small step-down transformer mounted nearby to handle a low-voltage control circuit. Could have a mounting screw coming loose.
just brew it! wrote:It's a residential panel. The panel is General Electric, but the breakers themselves do not have any visible brand markings on them; I assume that means the breakers are General Electric as well?
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