"Chris Friesen" wrote
For general-purpose circuits #14 can handle 15A, #12 can handle 20A, and
#10 can take 30A.

That is before the 20% derate factor.

When a c'bkr is in a panel, it is derated by 20% to handle the panel heat
generated by adjacent c'bkrs..

Thus #14 can only handle 15*80%=12A on a continuous basis.

There ain't no free lunch.

Lew