Dedicated AC lines???

If I were to wire a dedicated line I would use Aluminum flex
(indoors) or if the line had to run outside EMT.( Or weather-tight flex. Ask your electrician.) Try to avoid using romex if possible. Use solid wire THHN 12ga.(20amp)/10ga. (30amp current capacity). Try to have as few
possible splices (when using a wire nut to join two wires together, lay wire side by side then twist on wire nut) Use
a seperate ground wire the entire length of run. Be sure all
metal boxes/conduits are properly grounded. Use high quality
electrical outlet. As far as audio grade circuit breakers/
wire, I'm not aware. Look into VansEvers power conditioners.
(www.vansevers.com) Hire an experienced, knowledgable electrician (hopefully one that's an audiophile too!). Make sure you explain and they understand what you want done. I hope this helps. Billk

Sean, I'm sorry to have caused confusion. I do not advocate the use of aluminum wire. What I meant was that, if possible, use Aluminum flex in which to put your Solid copper THHN wire in. (This would be practical in an installation in a attic. If the run had to be made outdoors,
then whatever the electrical codes would detate the choice of materials.) Sometimes you have no choice but to run romex. If one is able to have a choice, IMHO, having solid
copper THHN wire inside of Aluminum flex, is a better than having
a run of romex.(I believe it has to do with the proximity of the ground wire where it is situated in romex.)How much of this
has a sonic effect is debatable. Any dedicated line properly
installed will improve the sound of your components. Bill