Installing Dedicated Power Lines -- Need Advice

I also have a whole house surge protector. It’s purpose is to protect all electrical devices in the house from spikes, fluctuation in the incoming power, and lightning strikes. It doesn’t clean the dirty power coming into the house from the grid.

I live in a city where power is dirty and has distortion that can be heard through my speakers as noise. That’s why I use a power conditioner. It lowers the noise floor, it’s providing higher S/N.

The best advise given was to look thru the archives and read the threads relating to "dedicated line."

Any competently built audio component should have mains noise filtering. AC , alternates, there is more noise inside the device than on a typical 60hz line, the filtering is to keep noise from entering your mains wiring as much as filtering any noise out of it. The best advice is learn about electricity and basic electronic requirements. 

As I stated earlier, power conditioning also protects other components and the source from becoming contaminated.
No need to be another condescending jerk.

Doesn't make any sense, the filtering inside each component protects it and the other components. There's nothing wrong with a power conditioner and in certain instances it can help but it's rarely needed. Surge protection is fine for surges and spikes but is useless for something like a direct lightning strike. That's what insurance is for. 

I n the OPs case 20 amp breaker is fine, 12AWG is fine no advantage to using 10AWG unless your run is very long, like100 feet or more.  Industrial or hospital grade receptacles work well they grip better.