For starters surges are different animals and should be dissipated to earth ground.
All receptacles on the same breaker/circuit will be limited to a sum of not more than 80% of the breakers rated amperage. Does that help? Short of running extension cords all over the house to tap other existing circuits your only option is to have another feed pulled from your panel (hopefully by a licensed electrician)
I'd like to add that if you DO run extension cords, don't cheap out at Walmart. For high loads like our ballast and such, you need to use the same or better rating cable than what is in the walls feeding power.
So, for a standard 120v 15A wall socket (like from a bedroom), you need at minimum a 14 gauge extension. From the kitchen, a 12ga extension.
Again, don't cheap out here. Go to your local hardware store and spend some good money. With cheap ones, although they say 14 or 12 gauge, oftentimes the connections to the prongs although pass CSA (or your specific codes), are cheap, and a couple of bends weakens them significantly.
Either this is a hobby or a production operation for you, but it is not worth burning your house down for by being cheap when it comes to electrical needs.
-spek
ps. a past acquaintance of mine from many years ago had a headline in the newspaper where his lab blew up a house in a low-rental neighbourhood. "Negligent homicide" or arson does not look good on a resume.
pss. sometimes my stories come off as unbelievable. I've never lied on RIU, and I never would. Don't be this guy who is negligent
http://www.torontosun.com/2013/04/03/man-jailed-for-blowing-up-house-while-making-drugs