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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 ghdprentice

ghdprentice
7,903 posts
 

@avl1947

I have two dedicated lines put in 20 years apart. Congratulations. You will be very happy.
 

I have never heard of an instance of this not helping. I never thought about direct line breakin… but my system has improved over time… so maybe that was why. You will notice an immediate improvement… so, I would just enjoy it and not worry about it. it is not as if you will have anything to compare it to.

ghdprentice
7,903 posts
 

OP,

I think you have made a good choice… I put in another direct line last year. I had the electrician use 10 gauge romex. It made a nice difference.
 

I think it is important to move on these things one at a time… make each prove they were worth it. There are so many possible improvements, each can be a learning experience. Go hog wild when the last three things you did to your power really impressed you and you are now convinced major surgery will produce further gains. 

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