I'm in a NYC condo (old schoolhouse built in 1890's but converted- rewired in late 1980's
I want to install a single run 20 amp dedicated line. I'm told about all I can use is 10 gauge BX cable (named for the Bronx, where it was invented) since I'm going in wall for most of the 50' run.
I'm powering a Niagara 7000 that my entire system plugs into. I would like to terminate the run with an 10 Amp IEC and plug that directly into the Niagara, (even if it means I gave to have a duplex installed and wire it to the IEC myself later.
Any thoughts as to options and configurations? I imagine there isn't any way to create my own ground to pipes, etc.
Would love it if the audio grade power breakers made for Europe were available here, but seems there aren't any.
I realize my response is a bit late but wanted to offer a few thoughts.
First take the Niagara 7000 out of the equation. What is the real purpose of having dedicated lines?
I ask because after much experimentation, I've concluded that dedicated lines only serve one real benefit. And that's to ensure a high-current-drawing amplifier is getting enough juice to more accurately reproduce dynamics, complex, and/or higher volumes. Other than that, dedicated lines may help ever-so-slightly with in-house dimmers, appliances, etc but that's pretty much it. The tiger to tame is the noisy AC coming in from the street. And that really is it?
That said and presuming the Niagara 7000 is doing its job, your only real concern must be the amperage getting to the Niagara 7000.
The 10A IEC connector you want to install seems like a bad choice. The 10amp rating on the connector does nothing for you except perhaps overload or somehow break down because you're gonna exceed its 10amp rating. So I've no idea what you intend to accomplish with this decision. It's a 20amp dedicated circuit so you really need a 20amp IEC connector.
10 gauge or 12 gauge Romex really ought not matter much.
The one question I have for you is, how hungary is your amplifier? A pretty hungry amp requires enough juice at all times from its own dedicated line or its dynamics could suffer greatly. And if you have such a beast, then even a low-current-drawing component like a pre-amp sharing that same circuit could be just enough to rob the amp of its required juice.