Dedicated Line Advise

I like the idea Coli has...  

If your gear will run 220 volt, you will have a lot more power available, and honestly could convert the line you have now to 220 and use a regular plug near by to run the 120 volt stuff. Maybe even save a few $ as it would only take a different breaker.  If you still want the second line I would make it 220 if you have any gear that can use it.

@imjustdave,
I own a small rowhome and have a 12' x 16' listening room (living room). I wouldn't be running anything that required a 220V line.
Currently my amp is 300w/8 ohms, 600w into 4 ohms and if I were to change my amp to monoblocks, they would be tubes, so 120V is fine.
Thanks.

@Lowrider57

If 120V is fine why do you want another line? I assume you need more power in this location by adding in another line VS just wanting another line to look at. 

I don't know your level of knowledge in regards to power, but if you double the Voltage 240V in this case the draw your equipment  has in terms of amps will drop in half.   So basically you can run twice the amount of draw in watts on the same wire you already have if you change the breaker in the box, and and plugs at the other end the cost from your electrician should be much much lower. 

I'm also assume the area already has an outlet near by so you have 120V available for the TV, cable box and the new 220 Line can take care of the hungry power hogs like the amps.  

Example of your power avalible now in 120 VS 240 setup 
Volts * Amps = wattage. 
120 * 20 = 2400 Watts of power 
240 * 20 = 4800 Watts of power. 


To be honest I'm setting up a new HT and I'm hoping I won't need to run more power for it but this thread made me think about it and Coli Idea was like hitting the bell at the county fair, If I have to run another line it will be 240 as it just makes more sense.  But in your case if your equipment can use 240 it would be a big money saver.

Also not talked about is you could in theory install a small breaker box and convert the new 240 line back to 2 120 volt lines.  

What my long winded TLDR point is there are possibly many more options available some potentially at less costs, and possibly better as well. 

  @imjustdave, I appreciate your input.
I'm adding an additional line so that the power amp can be isolated and have its own breaker.

I am aware that if I doubled the voltage to 240V, the current draw from my system would be less. I just don't think it's necessary with my small system and small room. And to be honest, I'd like to keep the costs down, given that I will be asking the electrician to rearrange the breakers in the circuit box for optimal placement of the audio lines.

As far as the cost of my electric bill, I don't remember noticing an increase after I added my high power amp which is powered up 24/7. It's SS and probably doesn't draw much current at idle.