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AC Dedicated Line

Hello guys
I will run three (3) dedicated AC power lines: one for my stereo system (power amp, preamp, DAC, etc) and two for my stereo subwoofers (one line for each one).

These three circuits will be connected directly to the main AC board of the Electrical Comany wich provides me the service right at my door.

They will all share the same ground cable, wich I will connect to a dedicated ground bar, but I would like your opinion about sharing the "same neutral line" on these circuits. Could it affect the sound quality? 

If I have to send three different neutral cables, one for each circuit, I will need more cable to run through the house and it will be more expensive and complicated.

Please I would appreciate responses with real experiences. I don't want to start a technical discussion. I know at the end, in the main board, they all will share the same neutral line, so electrically it should be the same, but in this crazy audio world who knows for sure if soundwise it will be the same....

PS: by the way, I will run 4 or 6 mm2 cables (I guess about 11 to 9 AWG on the US scale). Here in Argentina we measure cables by square millimitres.
plga

Showing 1 response by rbstehno

rbstehno
1,401 posts
 
I don’t agree that running 1 - 20amp circuit is all you need. Without knowing all the equipment you have today or you will get in the future, why only put in 1 circuit when running wire for 2 or more circuits isn’t that much more?
I agree, you need to see how much power you are pulling when everything gets powered up. To do this, have an electrician place their meter around the wire in the box to see the actual amps you are pulling. I did this 20 years ago and you would be surprised to see how many actual amps you draw. 
On top of that, you want to give yourself some headroom, meaning if you are pulling 12 -15 amps, I would go with multiple dedicated circuits.
I built my last 2 houses with dedicated listening rooms and each room I had them pull 4 dedicated 20 amp circuits, I think it cost me $450 for these. Better to do it before the drywall goes up or it gets much more expensive
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