High quality in-wall UL-C2 rated 10-gauge A/C wiring ?

I am looking to re-wire my listening area front-wall with a dedicated A/C circuit using 10-gauge UL-C2 rated in-wall wiring.  I know Audience makes a high-quality one however I didn't want to pay $26/foot.  I would need ~60-ft.  I've already purchased two high-quality A/C receptacles and wanted to do 10-gauge to them from a dedicated breaker.  
Anyone have any experience with this or know of other mfg's of 10-gauge A/C UL-C2 wiring ?

Thanks !
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1. Take two 50 foot lengths of 14awg romex.
2. Take the two black hot leads of both cables and connect them to the same 15A/20A circuit breaker.
You'd need to check NEC on this as well as your local code. Also, note that only breakers designed for such a two-wire connection would be permitted.
This is the same thing that happens inside larger power cords.
No it's not.

Even if R were the same, L&C are vastly different.

In the 'test' did you also have the heavier ga single wire connected to the same side of the transformer and routed closely so you could listen to each with minimal delay? If not, there innumerable changes possible on the A/C
Yup, I totally know that it's not to code.  My point was that 14awg is really not enough to supply good current to audio equipment.  The on-demand current draws are just restricted by the small 14awg wire along with the high dielectric insulation (this is not anything like foamed polyethelyne or teflon found on many good power cords).  While ieales seems to think that 14awg is perfectly okay for 20 amps of current (and it may be for general purposes, but highly not recommended!!!), is it definitely not acceptable for the fast current draws required by audio equipment for good sound.  You guys can laugh at me all you want, I really don't care because I know what works and what doesn't.
Headroom loss for 14ga vs 10ga is less than ¼db @ ≈14A / ≈1600W
See http://ielogical.com/Audio/CableSnakeOil.php#ACWiring
Voltage drop calculator.

Distance or Conductor Size: .... (Distance)

Single or Three phase: ........... (Single)

Conductor Type: .... (Copper)

Installation: ............. (Conduit)   .... Same for Romex
Voltage: .................... (120V)

Maximum Voltage Drop: ... (Already set for 3%. You can change the percentage to what ever you want.)
3% of 120V = 3.6V VD
2% of 120V = 2.4V VD

Conductor size: ...... (14 gauge)

Current: ...................(12 amps)

Max length of branch circuit for a 3% VD (Voltage Drop) 55.97ft.
Max length of branch circuit for a 2% VD 37.32ft

Remember, up, down, and all around when figuring the entire length.

Dynamic Headroom:

Here’s a quote from a Pro Audio web site, old post.
Around 1984 when I bought my first QSC power amp I called QSC after reading that it has 3db of headroom. I was told that the 300 watt rms rated amp could produce 600 watts of peak power when needed.

That means if I did a rim shot on the snare drum to make it louder or kick the bass drum harder when hitting a crash cymbal there would be enough power reserve for this and the amp would not clip. I remember the guy telling me its like snapping my fingers and then waiting a few seconds and snapping them again.


I guess if all you listen to is elevator music at a moderate listening level #14 wire is all you need.


When a load is known the NEC says the wire shall be sized at 125% of the connected load. Again when the load is known. Using #14awg copper wire, #14 has an ampacity rating of 15 amps. 80% of 15 = 12 amps.
(For a continuous load. Continuous load is defined by the NEC for a load lasting 3 hours or more.)

(ieales there’s your reserve you are looking for. )

That does not mean you can’t load a convenience receptacle outlet circuit to the 15 amp max until the 15 amp breaker trips..... If it trips..... With a receptacle convenience outlet circuit the loads are not known. The limiting factor is the circuit breaker.

In a dwelling unit there is no limit on the number of receptacle outlets that can be installed on a 15 or 20 amp branch circuit.