Nowhere, it's not permitted.where is #14 awg allowed on #20 amp circuit,when it pertains to branch lighting circuit. it's not fixture and it's not feeder.
I don't know much about the CEC, but I think that the 4-wire appliance circuts have much more to do with safety than with being in line with another country.Originally posted by rhombus65:
I think there was a time when you could pigtail a 20 amp circuit with #14 wire.
e.g. Receptacle outlet with three 12/2 romex's. you could splice the three and pigtail with #14 to feed the receptacle.
I believe this was removed from the code to humor Canada. Just like we now have to run a four wire to a dryer and stove. That was to make our codes in line with Canada's.