I don't want to sound too cheap here, but would it be an option for me to simply run the wire from the circuit breaker to the garage and have an electrician do the connections at both ends? Or is it more complicated that that? For me that sounds like the bulk of the labor. I would never trust myself to do wiring but if it is a matter of fishing 40-Amp wire through the wall I can do that easily enough. But at the same time, I don't want to be pound-wise, penny-foolish either.
Thanks.