Dedicated line help


Finally getting the dedicated line I've always wanted, but had a few questions on how it should be done for best results. My electrician is kinda young and is not an audiophile (the flipside is he's only charging 75 bucks to do it), so I'm relying on you guys for the details.

Some general info in case it's helpful: The system is in the basement and in the same room as the circuit box about 30 feet away. The wire will be fished behind the walls that fortunately have a few access panels between the box and my system, and there is no insulation between the wall and the foundation -- just some heat pipes (steam heat).

Questions:

Is 20amp strongly preferable over 15amp line or does it not matter that much? I'm currently running a 125wpc push/pull solid state amp but may very well run something like a 100wpc class A ss amp in the future, if this makes a difference.

I'm going to purchase a Porter Port, but is there certain type/brand of wire that should be used from the circuit box to the Port or will the standard stuff do fine?

Should I have him run 2 lines -- one for analog and one for digital, or is there another way to separate these guys (or is it sufficient just to do this at the power conditioner, which I don't have yet)?

Anything this guy could do wrong that could cause problems or create a fire hazard?

Any other tips you guys have either on the installation or equipment would be most appreciated. THANKS FOR ANY THOUGHTS/HELP.
soix

@scott22 If this isn’t a joke, it’s a wall outlet that’s much better built for audio purposes than a standard outlet. 

Go ahead and run 20A circuit, it's basically the same cost.  I keep my noisy stuff on a separate power conditioner than my analog.  I also use ifi Wall wart adapters wherever possible and use shielded power cables and interconnects.

It doesn't sound like you'll have much of a power draw so 1 circuit would be sufficient.  When listeners have a lot more power, and are far from the main panel a sub-panel may be a better option. 

One other possible option is to run a 20A/220V line, and use a balanced power transformer in the room to step it down and give you balanced power.  Lots of watts available then for the least amount of copper.

Just my funny way of expressing my ignorance of the term as I never heard it before and could not find its purpose on line.