what causes the humming noise thats coming from my fuse box in our rv?
by admin on Tuesday, November 22nd, 2011 | 6 Comments
I am in a Alpha Ideal 34 ft rv. The fuse box on wall started humming a noice lastnight. Coming right from in the area of the switches. What could be causing this ? Please help ???? I dont know if I can change out a fuse or hire an electrician ? I have switched each breaker back and forth and still it humms. It make this buzz noize then stop…then start, then stop. On and off ?
dont use it till you figure it out or it could explode
put your finger on the breakers one at a time , if one is very hot it may need replacement or something on that circuit is drawing too much.
be careful some of that stuff bites
If the hum continues even with each breaker off one at a time, it could be something being fed by two breakers or a breaker being backfed by another circuit.
A more definitive test is to turn off all the breakers. If the hum continues then the problem is in the backplane of the fuse box, maybe a loose bus bar.
If the hum stops, then turn on the breakers one at a time until it starts again. Whatever is connected to that breaker, or the breaker itself, is the culprit.
mine only hums when it is plugged in to ac…might be the inverter…
Mitchell Tolbert
Master Electrician
http://www.electriciantesting.com
Hello. The humming noise that you are hearing is coming from an arching of electricity between the contacts of the breaker, and the bus bar that it is attached to. Switching breakers as far as replacing the one that is making the noise might fix the problem. You might be able to do this yourself if you are a handy kind of person. You would need to disconnect the power source and simply unscrew the circuit wire that is landed on the set screw. Simply pull the breaker out and snap in the new one, reversing the part described earlier.
Parts of this nature do occasionally wear. It is something that you should take immediate care of however. Please let me know if you think you have any further questions.
Watch yourself hot breakers can explode.