I point out to him the roll that temperature played in VD and that the NEC does account for it with the temperature Correction Factors located just below the 310.16 table, something that he had never noticed or done prior.
Now you have me confused, those temperature correction factors have nothing to do with voltage drop.
Those temperature correction factors have to do with lowering (or raising) the allowable conductor ampacity depending on the ambient temp. This is regardless of circuit length and is required by the NEC.
Bob
