In some areas it is code required to have an outside disconnect. In some areas the whole panel itself is outside, like crazy California.
When I was there that's all I saw. Confused the hell out of me, took me forever to find the panel.
It seems like, well, kind of a dumb thing to do. The panel I looked at wasn't more than 5 years old and was just packed with dust (desert area). So...I don't get it. Guys, just put the panel inside the house...
In Canada, my panel is on the opposite side as the meter. So the service wires come in underground, go up the exterior wall to the meter, and then back down underground, all the way around the house underground
, and down into the basement on the other side. I think that's pretty stupid too.