This is a followup question to this answer
I plan to do something quite similar to the diagram Tester101 posted. I will pull 3-wire (10/3+g) into a junction box and then pull 2 separate 2 wires (12/2+g) from the J box to GFCI outlets. Here are the things I am looking for clarification on...
--Can I run two 20amp circuits with the above configuration?
--If so, will the dual pole breaker be labeled "40 amp" back at the panel? (like a large appliance 240v breaker, or is there some other kind of dual pole breaker that I should look for?)