Starting Over: Power My System

If your going to go 100' and have a basement, add a sub Just make sure the sub is installed correctly and use a slightly bigger wire then you have to. This will allow you to run seperate circuits for analog and digital and place the circuits in the sub with more flexability than the main panel

Not too sure what your definition of ‘lengthy indirect runs’ may actually be here.

The total distance of the ckt plays a part. But it comes down to heat in essence. See this link for starters:

http://www.answerbag.com/q_view/56340

Stepping up a notch from 12/2 w/grd Rmex to 10/2 w/grd rmex would be my thought IF the overall distance is more than 100 ft from service to outlets.

Yeh, I know the voltage drop is minimal with only one v lost per 100ft, I just llike the idea of overkill.

You certainly can add a disconnect in the basement to sub feed the new ded ckts. I’d add 3 however, not just two 20A ded ckts. One never knows what one might get into later.

If a sub panel of sorts is placed close by then perhaps adding fancy wires or cabling from there up thru the floor and into the walls maybe … could be a thought too.

I’d be more interested at that point in adding an isolation transformer there though than merely a sub panel, or disconnect, that could supply those new ded ckts with cleaner power...

Here’s the thing, installation after the fact can often arise some interesting issues in re-routing fastening, and supporting the cabling. Sometimes the home itself willsay which way you have to run wire, unless you’re all in on redoing walls, matching up and re-painting, spackling, etc. the path of least resistance and incursion is normally best so long as your area electrical code s are observed.

Using pricey designer type wiring may help things, and may not. Were it a short distance 20 – 30 ft I’d think about it myself. Past that I’d not… and just employ the same stuff that is in every home. Romex. Maybe shielded though rather than simple vinyl covered. And move into #10 v #12, BUT use the 20A ckt interrupter hardware.

Think about it al a good bit and draw it out so you can visualize it. Walk thru the run a couple two or three times and be picky and pay attention…. So there’s no surprises during the install..

Good luck