On one leg or two legs?

Hi Ghstudio, Sorry, I may have things a bit mixed up, but the all the ground rods are tied together. My friend Jon is a master electrician, and everything passed inspection. I had originally asked him about hospital grade receptacles and told him what I wanted to do. He suggested an Isolated ground circuit as they are what he installs for the most sensitive, both voltage and ground sensitive, computer equipment, he has done work in hospitals too but told me for what I wanted, an Isolated ground would be best. I would think that if each receptacle has it's own run via a 12/3 wire , all the way back to the panel on a separate ground bar in the panel, that there couldn't be any ground loops. I think the ground pin in the receptacle runs back to the panel, and the receptacle itself is grounded to the metal box. It sure made a difference sound wise too.

They should be on the same side or leg of the panel and try to keep any motor loads such as bathroom exhaust fans, refrigerators on the other leg or side. Motors have back emf and will backfeed into your electrical system causing noise, keep them as far way as possible.

Thanks for all replies. I installed the wire bought at Home Depot and it is CAROL Brand. it has four stranded 10 awg conductors, and very flexible. I used two wires for hot on each receptacle and share the ground and neutral. I then installed two breakers on each leg of the panel.

There is a noise coming from the outlet (either one) when i plug Virtual Dynamic pc from the outltet to my ps audio PP. I checked the VD PC porarity and found it is correct. I even tried different VD pc and the result is the same. On the other hand the cheapy pc is ok, no noise.

Another issue is that i heard hum/buz coming out of the speaker if the amp connected Directly to the outlets. Note that only amp was on at this time regarless connect or disconnect IC from pre to amp and turn off one breaker. If i connect the amp to PS Audio PP , no hum/buz come from the speakers.
Any idea?

01-22-09: Houstonreef
Thanks for all replies. I installed the wire bought at Home Depot and it is CAROL Brand. it has four stranded 10 awg conductors, and very flexible. I used two wires for hot on each receptacle and share the ground and neutral. I then installed two breakers on each leg of the panel.

You have two separate circuits..... Not two dedicated circuits. Shared neutral for audio equipment is a bad idea....

There is a noise coming from the outlet (either one) when i plug Virtual Dynamic pc from the outltet to my ps audio PP. I checked the VD PC porarity and found it is correct. I even tried different VD pc and the result is the same. On the other hand the cheapy pc is ok, no noise.

Obviously you did not hire an electrician to do the job. Outlets should not make noises....

I would turn off the two circuits at the breakers and hire an electrician.
.

Are they on the same leg of the main power....(i.e. did you skip a breaker when you installed your new wire?

Why did you share the ground...that's something that only electricians use to save money on cable and to avoid having to pull multiple cables. Sharing the ground is OK (you want all the grounds coming to an outlet box to be grounded at the outlet box, but you should be running separate neutrals for each line back to the main power distribution box.