I am upgrading my service form 100A to 200A to accommodate the new air handler. Although there is an existing 100A breaker panel, I am putting two 100A breakers after the new meter, and branching one to the old breaker panel and the other to the air handler. There is a ground electrode outside adjacent to the existing meter. It a #8 copper and it goes to the old breaker panel. The clamp is loose, and it looks pretty crappy, but it is definitely in the ground. don't I need to restore the integrity of the clamp and connect it elsewhere. Where and how? The new air handler has two CB's in it; a 60A and a 30A. It is a 220V appliance. What size wire and what type of box goes in the crawl space to power this? the air handler mounted on a pad, with clear space all around it. How close to the unit does the box goe and what type of wire between the box and the air handler? Can the new box be mounted directly to the air handler? I was previously advised that an indoor disconnect would suffice. Dose it need have overload (CB) in it even though the air handler has its own pair of CB's? I was planning to run a 100A branch circuit to the air handler off the meter and another 100A branch to the existing breaker panel. Comments and advice are welcomed.