I appreciate the feedback - but personally do not remain convinced although I don't doubt you're correct.
As an electrical engineer (not a licensed electrician with REAL knowledge) I'd prefer a statement such as; "Wire size is determined by nominal operating load, breaker size is determined by nameplate transient peak load."
I think I'll still wimp out and spring the extra $ for 12/2...
I do enjoy the forum!
So why not spring for the extra for 10/2 ??? Wouldn't that be safer ?