20 Amp Dedicated line: 10 gauge vs 12 gauge wire

No problem using 10 gauge instead of 12, however if all your outlets are rated at no more than 20amps, you should use a 20amp breaker.

Neither wire will heat up noticably, because you will only draw a couple of amps no matter what the wire, outlets, and breaker are rated for.

Like Eldartford says, heat will not be a factor unless you have some very unusual system, giant Krell amps always on along with an older massive projector system, and a small stove, etc.
However, imo the 10 guage is the superior choice for the reason stated by Rushton.
Some will say the difference is not significant; but, as Keith Johnson of Spectral Audio has stated- its the sum of many small improvements that can result in a significant advantage. The 10 guage of the same quality wire will provide reduced impedance to the current flow, and that is desirable for amplifiers in particular. I would suggest the 'quality' of wire is just as, or more, important as the difference in guage. There is much higher quality wire used in robotics for example, with very significantly better shielding/grounding. I would examine that option as opposed to simply larger guage. Good luck & happy listening. Pete

Well it's been a few years, but I know my 20A lines are 10 guage wire. I think it's code here in Michigan?

Dave

Based on the responses, I just had my electrician run the 10 gauge Romex (sp?) wire; my distance was about 60 feet.

I have one thing plugged into the outlet now and that is an Audience Adept Response aR12. Into that, I have the following plugged in:

1). 2 Conrad Johnson LP275M's
2). 1 Conrad Johnson LP140M
3). 2 Conrad Johnson Premier 12's
4). Pre-amp
5). Pre-Pro
6). Plasma T.V.
7). CD player
8). DVD player
9). Cable Box

Would you feel confident that the single dedicated line is adequate for what is drawing from it? I would prefer NOT to run a second line as I only have one Audience Adept Response conditioner and do not want to spend the money on a second one.
Thoughts?

Thank you.

B.