Wow you guys are lucky.Here British Columbia We have to change the complete service Min 200 amp meter base. It does not matter if we are upgrading from 60 amp to 1oo amp .We are not allowed to change the conductors from # 6 to #3 even if the con duit is 1 1/4. We have to do a complete service upgrade.One reason is that We are no longer allowed to have the service mast concealed in a wall. It must be secured to the out side of the home.