Romex and breaker switches


I did a search and have read previous posts, but I still have some questions. I had an electrician install dedicated lines in my listening room when we built our house 20 years ago. I bought simple hospital grade outlets from a big box store and did not specify the gauge of the romex or anything else. I need to clear out my dedicated listening room soon for new hardwood to be installed and figured now would be a good time to revisit and improve my dedicated lines. I have already bought a pair of Oyaide R1 duplexes and intend to have them installed side by side behind my equipment rack. My question is-is there a particular variation of 10 gauge romex that would be best? I have looked and there are quite a few variations including 10-2 and 10-3 and I have no idea what to buy or for that matter, if some other wire that would do the job and not be prohibitively expensive presents a better option. I will need a 20 foot run for each duplex. Also, can someone help me as to whether the breaker switch on my panel matters much and whether I should opt for 20A, 30A, or other? I now know that all runs from my duplexes to the panel should be to the same leg. I will make sure that happens. Any other recommendations or advice about romex/wire to use and breaker switches given my decision to go with Oyaide R1's would be most appreciated. 
fsonicsmith

Showing 3 responses by brayeagle

My home is all-electric, and the two-channel stereo system is in the living room, along with various lighting fixtures, the alarm system  and leads to outdoor lighting.  I had an auxiliary circuit breaker panel installed off the main panel and had the electrician run a separate 20 amp circuit for my Bryston 4BSST2 amplifier, and a 15 amp circuit for the pre-amp, CD  spinner, DAC, Stax headphone amplifier and FM tuner. These units are plugged into one power strip to ensure polarity and eliminate hum.   BTW: You should get a licensed electrician to do the work and have a code inspector sign off; otherwise your home fire insurance might be void. 
Yes, two separate lines, each from a circuit breaker. The 20 amp is for the 4B amplifier, the 15 amp is for the remainder.

The power strip is plugged into the 15 amp line. 
I agree with sleepwalker65.  The last paragraph in his post is worth repeating for those of us who are NOT licensed electricians. 

DIY electrical wiring isn't for amateurs.

- - George