In a previous thread entitled 7700-Hum replacing 755 with no Hum...why Previous thread

I solved the problem. But I forgot to tell you about a problem that existed even before I had outlaw eqpt.
I have a wind-turbine which generates electricity. It is connected to the power company. It feeds and/or we draw. When production exceeds consumption the meter runs backward and we "receive credit". In fact for some months we only pay the connection charge. It does substantially reduce our bill.

I noticed the buzz before and can tell when we're really generating a lot, by going to the garage and looking at the readout. Now that I have a MONSTER in the rack I can read voltage (and amps). Usually I'm reading 122 volts. Amps of course varies, depending. When generating lots of electricity I read up to 125 volts and have independent, separate confirmation of that voltage level. Buzz is not loud but noticeable and annoying. As wind dies down and production decreases so does the buzz. At lower production levels I don't even hear it.

So I'm wondering if anyone else has noticed this. Also any suggestions. Thanks in advance