Breakers - Grounding

[rollo]

One of the issues with using 2 dedicated lines is, for example, if you have a source on line 1 and an integrated amp on line 2, both plugged in with a typical grounded power cord. 

These components are connected together with interconnects, but the grounds are also connected together by the power cord's grounds, as well as any wire inside the wall needed to connect them. If you have 2 dedicated lines as described above, them the ground connection goes back to the panel on line 1, and up to the amp in line 2, potentially traveling over a long distance with many wire connectors.

The "return signal" will take the path of least resistance, and if your interconnects ground connection is small gauge, then the return could be using your power cord's ground and house grounding system for a majority of the return rather than the interconnects grounds.

The noise produced by differences in ground potentials is directly related to the impedance between them...

   Dave I find this info to be extremely intriguing. It appears the Ga. of the IC ground wire is key.
   Would having a chassis ground lift help ? Would it help if the ground wire for the AC cord is a particular Ga. ?
     

charles