Personally, I like our (USA) way! 14= 15 amps, 12=20 amps, etc.
That was our way before 2012. Now we size our breaker like that but derate from the higher ampacity. I thought I read that was to make our rules consistent with yours. Maybe I'm wrong.
I was wrong once. I said I was wrong and everyone said I was right. I was wrong because I was right.
