I'm guessing that Harlie has, or has his eye on, a "200A panel", and figures that he needs to supply it with a 200A supply.
Harlie, that's not necessary. Your supply needs to be sized according to the load calcs in the Code, which will almost certainly be less than 200A. It is very likely you can feed your 200A panel with a 50-100A feeder.
[This message has been edited by SolarPowered (edited 12-13-2006).]