Hello, to answer your original question, if your main service ent. cable is 2/0, then the main breakers/fuses can be up to 150 amp each. It is common for the panel itself to have a rating higher than the main disconnect, contractors often use the highr rated panel to have additional space(circuits and working clearance) in the panel. a service change is a large project and I would warn you against trying a complete service change yourself if you aren't an experienced electrician, but that's JMHO.
[This message has been edited by Electric Eagle (edited 07-17-2002).]
