my 150 amp service breaker keeps tripping out, i was wondering if my present box will except the 200 amp beaker will the new breaker still trip out. do i have to upgrade the wire in the box. the meter resides in a can of its own and goes in to the main box where the 150 amp breaker is , also the rest of the breakers. this is all on the out side of the house. any help from any one would really be appreciated . can i do this my self? what should the breaker cost approximately. thanks. steve