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What type of wire for dedicated 20A AC lines?

I’m about to have two 20A dedicated lines installed. What type of wire should I use? I know there are differences of opinion on whether to use 10 AWG or 12 AWG, however the link below makes a great case for using even 8 AWG solid core copper on longer runs like mine will be (50 ft), to ensure a lower resistance, lower voltage drop over the long run, and therefore more access to instantaneous current for my Gryphon Diablo 300. The wire would need to be stepped down to 10 AWG to connect with the receptacle. The article actually states that the thickness of the wire is more important than the fact that it is dedicated…

Assuming I want to follow this advice, which again makes sense to me, where would I find such wire to give to my electrician?

 

nyev

Showing 2 responses by mglik

mglik
914 posts
 

I just completed my 50 foot dedicated AC.

Your question was what wire to use.

I believe I addressed this issue with about the best wire available.

Oyaide high quality copper three wire 10 gauge.

This very special cable is available through the US distributor, www,lotusgroupusa dot com. Joe Cohen in NorCal. 
This cable is very close to a good quality power cord. Its construction includes 2 copper grounds in addition to the main three wires. 1 a ribbon that wraps around the main 3 and a second one in a thin copper braided wire.

To get the best, one has to pay. My 50 feet cost $4K. In addition I terminated the run with two Oyaide duplexes and carbon fiber face plates. This was $1200 more.

And my electrician was another $2200. My run was complex through the attic.

Was $7400 worth it? You bet! The improvement was global. I got about a 25% better system. Clean, punchy, stunningly real!

The only catch is that none of this Oyaide stuff is UL approved. But the Japanese standard are way beyond those in the States. And I did not touch the house AC system. Still, you have to find a licensed electrician who is willing to deal with non UL. I went through a couple and luckily found a guy willing to do the install.

And I had to pay him a consultant fee to talk with Joe Cohen on how to deal with the unique Oyaide cable.

The main issue is wire. For me, there is only one.

 

mglik
914 posts
 

My Oyaide cable and duplexes motivated me to add a PS Audio P12 Power Plant to my new line and Shunyata Triton/Typhon. PSA recommends not using a pc with their power plants. However, they do say that careful evaluation is called for.

There is a synergy between the T/T and the P12. 
The T/T adds body and the P12 clarity.
Normally, I sort out records that are good recordings to place in a special group.

Now, it is difficult to pick out good ones. They all sound great!

Improving ones power is central, vital and spectacular!

Now, wonder about grounding?

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