Grounding cable gauge size

I found  plugging in the ground wire from grounding box to a power conditioner is better.

I would like to try the Andrews plug, but since I got hum when I tried a ground wire from an AC outlet to my grounding box, I'm not sure if the Andrews device would change that.

I am in the USA, and it would be a long return process.

ozzy

Ozzy, have you determined what kind of ground is going to the box? Are you connecting in series or parallel?

If your box is a chassis ground or otherwise an electrical ground then you would be creating a loop no matter what the device is.

If your signal ground is not part of the AC ground of the device then you will be okay. Have you checked all your ground points to the AC ground pin on the IEC of your devices first to determine which is truly a signal and which are AC grounds?

To repeat, on my amp, the ground of the iec on the amp is exactly the exterior of the XLR connectors and the chassis itself. So therefore, they are AC grounds and already being dumped through your power cable. If you try and "ground" them once again via a box, that is okay. If you then tie the box banana to an outlet ground, that is creating a buzz because it is a ground loop.

bugredmachine,

I have 4 separate grounding boxes. One for my amps and subwoofers. One for my digital and 2 smaller ones for my speakers. They are all connected via the ground side on a rca/banana. None are connected directly to chassis or to ac ground.

So how would I use the Russ Andrews plug in device?

ozzy

It is essentially a Groundmaster. I wanted one to have a filter before my second earth rod (and to give his a try) for my signal grounds

So, are your amps and subs signal negatives for sure not chassis?.