The electric service goes to the house, but I want to run the generator in
the barn. So far I know,

* there are 3 unused #10 wires buried between the house and the barn.
* the electric to the barn comes from the house in 2 buried #000 cables.

Some of the parts I have to work with are

* a 3pst relay with a 120vac coil and contacts rated for 90amps
* the above coil also activates 4 N.O. and 4 N.C. contacts rated for 15amps
* two 3pdt relays with a 120vac coil and contacts rated for 30amps at 300vac
* a spst mercury relay with a 240vac coil and contacts rated for 60amps

Here are the rules:

When the MAIN switch is ON, all generator wires must be disconnected.
When the MAIN is OFF, it is safe to connect all generator wires.

I take it that many of you were irritated with me over my last post. I
don't know how you got it I lived in Virginia, but whatever. This past
weekend I spent fixing up a computer and building a network in my home. I
guess it's nice I accidentally firewalled out my address, but since I did I
don't have to deal with backstabbers like some of you. See if I care if you
find out where I live, but I'm not volunteering the information.

If any of you have any smarts you'll solve the puzzle and come up with a
circuit that works and is up to code.