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Dedicated Line Advise

I currently have a 20 amp dedicated line run to my small HiFi rig; amp, preamp, CDP, TT, power conditioning. I wish to add a second line using the same electrician who has worked on my house. It looks like he used 12 gauge Romex last time.

What are the key facts that I should know in case he is not familiar with doing wiring for audio systems?
I'm talking about the installation at the breaker box, e.g., keeping proper phase and preventing a ground-loop between the 2 circuits.
128x128lowrider57
lowrider57's avatar
lowrider57 OP
5,417 posts
 
When you say use the same phase, does that mean phase = leg. Use the same leg?

I see that audio AC line 1 is installed on left side of circuit box, which is now full. As long as he puts line 2 on the right side of box, same phase, then everything is cool. Is that correct?

Also, previous owner installed 220v furnace on left side and 220v dryer on right side. Am I in good shape for this install? Thanks.
tls49's avatar
tls49
1,351 posts
 
It's always been my understanding that multiple dedicated lines need to be on the same side of the circuit box. Any reason why he wouldn't be able to just move the existing one?

pbnaudio's avatar
pbnaudio
1,613 posts
 
Definitely run both lines on the same phase/leg otherwise you will most surely get hum form your system.  If you don't have enough room on one side, you can just move breaker's around.    One of the best "upgrades" i did for my system was completely reconfiguring the electrical panel, tightening up all the connections etc.  You can see a more detailed description on my systems page here on AG.

Good Listening

Peter
lowrider57's avatar
lowrider57 OP
5,417 posts
 
Great info, many thanks. There is adaquate room on the right side of the box.
Is this the best way to proceed...
move line 1 to right side, add line 2 to right side (same phase). This would move the audio AC lines away from the furnace breaker on the left.
Now there would also be room for additional lines.

Your thoughts?

rodman99999
6,128 posts
 
Absolutely stay with the same phase for all audio outlets. Also- don’t run any of your 220V stuff whilst you’re listening. They are connected to both phases.  Their current draw and the noise the motors generate will more than negate any benefits.
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