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Re: Hum/Buzz

Posted by Az Barber (A) on February 10, 2005 at 12:38:20

In Reply to: Re: Hum/Buzz posted by Az Barber on February 10, 2005 at 04:48:26:

Ok, here's an update: The outlets that were not grounded simply never had the ground wires hooked to them. The wires were run to the outlet boxes, simply twisted together and passed on. Easy enough to fix. The outlet that the equipment is plugged into was grounded fine and was on a different circuit. The ungrounded outlets are now grounded.

The electrician unhooked the ground wire from the GFCI outlet and the buzz was about half what it was. He said that this was safe with a GFCI outlet as the GFCI would still trip and prevent any accidents. He could not come up with a reason for the rest of the buzz though... he was here for 2 1/2 hours. His solution was to add a completely seperate leg from the main panel and run it to a new subpanel specifically for the equipment as the noise seems to be coming down the neutral.

This would be very expensive as it would require upgrading the main breaker panel and installing a new sub panel. The wire runs and new ground would actually be easy.

So the result is about half the buzz, but no real reason or 100% solution.

Thanks again for any ideas!

Az

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