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
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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.