lotta heads in the NEC Doc,
yet the history of the NEC has, to my knowledge, not been published.
I've often wondered myself of those who write the trade mag articles, as they must have some resource, or all be good researchers.
Case in point pg 70-143, 310.15(C), i think it may be McGrath-Neer (SP?) formula.
I read a story on how they researched captive conductor heat, assumably leading to UL standards, whis more of this was , as you say...documented...
