ECN Forum Forums Code Related Discussion Canadian Electrical Code Topics 100AMP panel in 60 degree ambient what size wire?

hmm.. would this be more appropriate?
heater 2500 / 240 = 10.4 AMPS. x 1.25 for continuous load = 13.
since 15AMP breaker is max 12AMP at 80% load.
Isn't #12 the more correct choice since it can handle up to 16 amp?

btw: I should probably thank you guys for going thru a couple of these with me, and tolerating the side tracking at times.