Matt those are so narrowly defined that most AHJs will be reluctant to allow them in general use.
"Where the conditions of maintenance and supervision ensure that only qualified persons service the installation" will only apply in very well regulated industrial applications and I doubt anyone here has seem much "multiconductor varnished-cloth-insulated cable" at the supply house. wink

BTW if you dig around a little you will see it is OK to use blue for a neutral in "cords" but that is just to allow things here that come from Europe where a cord is blue (neutral), brown (hot) and green/yellow ground.


Greg Fretwell