Check the fuse box, it might be labeled there. While you're at it, you could check the amperage of the fuse on your circuit, so you know if you're pushing it or not. And get your own power meter (
http://www.amazon.com/P3-International-P4400-Electricity-Monitor/dp/B00009MDBU). All the kids in school will think you're cool if you have one. Not the mentioning the girls. You'll be chasing them away like flies.
If you want to impress your dad, ask dad to whip out the home wiring diagram. If he asks why, tell him you want to fight communism.