In article ,
Andy Hill wrote:

Color me curious, but why would you be running a 15A breaker on a circuit
wired
with 12GA in the first place? Might as well let the circuit work up to its
capacity.

The cable might have its ampacity reduced due to bundling, running
through a hot attic, etc. The rule of thumb of "14 AWG for 15 A" and
"12 AWG for 20 A" is generally acceptable but not always -- the real NEC
rules are quite a bit more complicated.

--
Steve Kives -- Unix sysadmin/netadmin -- Denver, CO
Forward and fiaka, Manacle an den gosaka