2. tech-talk
  3. 150289-110508

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 delkal

delkal
110 posts
 
With AC the neutral wire carries as much amperage as the hot wire (the current goes back and forth). You cant hook up 3 hots to one neural and expect the neutral line to carry 3X the current. And how were you planning on wiring one neutral to three different breakers?
Were you planning on using just one 4 strand romex and using 3 as hots and one as neutral. I am pretty sure that would be against all codes in any country. You would be better off installing two outlets with the 4 strand cable with one hot and one neural to every breaker.(assuming that is allowed). Two 20 amp breakers should be more than enough for any sane system. You don’t need 60 amps with incorrect wiring.
More to discover