Time for dedicated outlets!

You have to assume the electrician doesn't know anything about high end audio, and probably wouldn't believe you if you told him. Don't give him the opportunity to say you'll never know the difference, and just use a lesser product.

You have to assume the electrician doesn't know anything about high end audio,

So true, even if he tells you about all the home audio systems that he's wired.
There are many tips on dedicated lines in the Archives.

The above is all so true...
As mentioned by cymbop, make sure you use an audio quality outlet. There are many discussions on Audiogon regarding quality outlets.

Use 10/3 romex, not 10/2. The 10/3 feeder has a full size insulated ground and the wires are twisted which goes a long way in rejecting common mode noise while the 10/2 wires are parallel and acts like an RFI antenna. The added cost of the 10/3 will pay back after you’ll most likely find that power cords will have a much less affect over stock cords, as has been my experience.

+1 to the 10/3.  And buy it yourself at Home Depot; it's thick enough that the electrician will try to convince you that your overkill is silly, but if you just hand it to him he'll have no choice in the matter.  :-)

Be sure to circle back to let us know how it effects your sonics.  I don't think you'll be disappointed.