I'm not an electrician but asked a similar question. You DO NOT want to run two separate grounds. Hopefully someone with more knowledge will chime in. I think it's even illegal or against code. What you have in mind may be overkill but putting in several lines while you're at it would be the easiest way to do it anyway.
Dedicated Circuits/Isolated Grounds
I’m getting ready to run dedicated lines for a combination Home Theater/2channel setup. The question is how many. I know to run at least two, one for analog equipment and one for digital equipment. However some additional advice for my particular set-up would be greatly appreciated. My equipment presently consists of:
1. Samsumg DLP TV
2. Yamaha RXV1 Receiver for HT processing and rear channel amplification (I may get a processor and a separate amp for the rears in the future)
3. Plinius 9100 Integrated amp for 2 channel and HT fronts
4. Direct TV receiver
5. Sony 9000DVP for DVD and CD (I will be adding a dedicated CDP down the road)
6. Bel Canto DAC 2
7. Velodyne DD12 sub
8. Totem Model Ones (front) and Mites (rear). I probably will not run a center channel.
My current plan is to run three 20 amp 120 volt circuits with 12 guage wire and one 15 amp 220 volt circuit (for the Plinius) with 10 gauge wire. Each amp/sub on a dedicated line, all digital on a dedicated line, the receiver on a dedicated line, and the TV on a dedicated line. What do you think? Over kill, not enough?
Also I’ve heard talk about isolated grounds. Can someone clarify this? Does this mean burying a rod somewhere in your yard separate from the electrical box? Or is it sufficient to ground each circuit back to the box?
1. Samsumg DLP TV
2. Yamaha RXV1 Receiver for HT processing and rear channel amplification (I may get a processor and a separate amp for the rears in the future)
3. Plinius 9100 Integrated amp for 2 channel and HT fronts
4. Direct TV receiver
5. Sony 9000DVP for DVD and CD (I will be adding a dedicated CDP down the road)
6. Bel Canto DAC 2
7. Velodyne DD12 sub
8. Totem Model Ones (front) and Mites (rear). I probably will not run a center channel.
My current plan is to run three 20 amp 120 volt circuits with 12 guage wire and one 15 amp 220 volt circuit (for the Plinius) with 10 gauge wire. Each amp/sub on a dedicated line, all digital on a dedicated line, the receiver on a dedicated line, and the TV on a dedicated line. What do you think? Over kill, not enough?
Also I’ve heard talk about isolated grounds. Can someone clarify this? Does this mean burying a rod somewhere in your yard separate from the electrical box? Or is it sufficient to ground each circuit back to the box?