Jon wrote:
I. GENERATOR TRANSFER CIRCUIT

The service wire is 000. I'm not even going to attempt a contactor for
that. I'd have to wire it hot and there's too much risk. All I'm going
to do is make a fail-safe circuit to protect the generator when the
power goes back on. It's only a 10kw generator so I'm using 120vac coil
contactor with contacts rated for 90amps. I'm going to use the spare
wire from the house to the barn to signal when the grid goes back on.
That will open the circuit and shut down the generator.

A potential candidate for the 2010 Darwin Awards?