Quote Originally Posted by don_resqcapt19 View Post
No one could really define it and that is why that table is no longer a code rule.
50% load diversity could mean 50% of the conductors in the raceway or cable loaded at 100% of their rating, or could be all of the conductors loaded to 50% of their rating.
The second one would make more sense as that would be less heat produced from the I²R losses.
Either way, it would be difficult to enforce.
Our Table 5c only applies to current carrying conductors. (Power and lighting conductors)

True neutrals (conductor that would only carry the unbalanced current), bonds, grounds and control conductors do not have to be counted when determining ampacities.

CEC 4-004