It's always worth a few hundred bucks to have a REAL electrician come out and make sure you're safe. Cost me 500.00 to have my room properly wired and 20amp circuits put in with proper #12 wiring etc etc. The good thing is, I can sleep sound at night knowing i'm not going to bust a breaker or worse yet, burn the house down.

Any serious grow should always start with the safety of the electricity providing the lamps their juice. You wouldn't build a house on a foundation of sand. Neither should you build a grow room on a foundation of potential disaster.