Nate Nagel wrote:

Bought a Siemens AFCI breaker off fleaBay for the bedroom circuit,
installed it last night. All appears to be well, except when turned on,
there's a faint audible buzzing coming from the breaker. Is this normal?

thanks,

nate

--
replace "fly" with "com" to reply.
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Probably, my Square D QO AFCIs make a noticeable whine rather like a
switching power supply which is probably what it is.

Pete C.