How can I find out the maximum current that can flow in to my house?
closed as not a real question by The Evil Greebo, Tester101♦ Oct 14 '12 at 15:25
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, see the FAQ.
It depends on the wire diameter ("gauge"), the material, and the distance from the main transformer. Thicker, copper (vs aluminum), and shorter all mean less resistance and thus greater current carrying capability.
You'll need someone from the power company to assess it to tell you the maximum service they can provide without changing anything.