What type of wire for dedicated 20A AC lines?

This stuff is awesome and I barely comprehend the explanations, but it sounds like there are strong arguments that I’m going to really going to enjoy my big fat 10AWG wires with lower resistance, enabling more rapid access to glorious peak current, all for like two hundred bucks extra, give or take. And if the anti 10-gauge crew end up being right and it does nothing, the extra bucks will totally still be worth it knowing those big fat wires are providing the juice!  Can’t go wrong.

There is more to it than just adding a 10 awg wire.  I design electrical infrastructure to support audiophiles homes as well as manufacture premium panelboards.  I have a pretty dense 6 page specification on how to assemble it all.

FWIW, if your going through the trouble of adding a line, add 2 to 4.  Its not much more money and you will hear the difference. 

@kingrex

I’ve read different opinions on running all gear in system through single 20A line versus multiple. I don’t know enough to have an opinion myself yet on this.

If someone were to install three 20A lines for a single 2ch system, let’s say, how should they determine the components to be driven by each line? Let’s say system has 2 monoblock amps, a preamp, a digital system (e.g., dac, streamer/server, sacd player, maybe external clock), an analog system (TT, phono pre). What goes to each of the three lines? or two lines?

FWIW, if your going through the trouble of adding a line, add 2 to 4. Its not much more money and you will hear the difference.

I agree! I installed four dedicated lines one for each mono block amp, one for digital and one for analog.

Mike

So here's a beginner's question.

If you're putting in a dedicated 20amp line, or even 2 or 4 of them, and if there are no free spaces on the main breaker box panel that you currently have, do you also end up putting in a new larger panel?  Does a sub-panel solve that?  And what are the other upsides/downsides of a sub-panel?