36x60 garage is ordered and is going up in 2 1/2 weeks.. i need help with fig out the wiring.. i had the house service upgraded from 100 amp to 200amp and had elect add a disconnect under the meter for the garage.. it will be 150 ft behind the house. i saved the 100 amp panel and breakers that came out of the house (only 3 years old).. my question is.. what size wire do i need from disconnect to new panel.. will 3/0 copper work? and where do i hook them in to.. when i took the panel off and looked inside at the disconnect,there is no place to run those big wires to.. the wires run down the house threw the meter into a 200 amp disconnect on the top then they run out the bottom of the disconnect threw the foundation into the new 200 amp panel.. i dont see how i am suposed to hook the garage service into it..