On Sat, 14 Jan 2017 21:53:13 -0000, "James Wilkinson Sword"
wrote:

A wire that is meant to take 1A will get 19 squared times hotter at 19A. That's very hot.

a wire meant to handle 1a would be between 29 and 30 gauge and you
will never see that used for 120 or 240v.
I pointed out earlier the smallest "fixture wire" allowed in the NEC
is 18 gauge.(1mm)