Needing some Residential Electrical Help.....

[[XC] Lead Head]

Dunno man, all the 15 amp circuits on my house are run with 12/2, we only have like 2 20 amp circuits, and I'm pretty sure those are on 10/2, although I suppose I'm a bit paranoid as many people I know (including my grandfather) are master electricians, and they always preach always go bigger then what you need.

Really the only reason to have a breaker box within the building itself is just for convienece, if you want to turn off one circuit, but not the other.