What do you suppose the maximum overcurrent rating will be for #10 Aluminum?

When I look at the calculations, it seems there isn't much of a penalty for loading a conduit with #14 wires. But, I have to admit these calculations are dreadfully boring and it's beyond me to stay awake long enough to read all the rules. http://www.codemath.com/cgi-bin/Run.pl?script=CecAwgRw2012