Thanks JW. I had planned on using #3 copper to the subpanel.
BTW, JW, I found your recent article on multimeters electrifying.
My multimeter is CAT III for 1000 volts, and CAT IV for 600 volts.
It's a Craftsman Professional, True RMS, model 73753. 500,000 count, if I remember right.
Sears...