Buying wire really hurts right now, and & #6 hurts more than most.

Kevin, if you used metal conduit, why did you run a ground wire? The conduit is the ground. And yes, the only place the neutral and grounds meet is in the main panel, NOT in a sub panel. Never understood why, but I bet I will soon...

240 in a garage rocks. 3ph rocks even more, even if you have to use an open delta in a residential neighborhood. If you ask for it, the power company will hate you...

Not responsible for advice not taken...