I have presented figures. Do they contravene the NEC?
per what you said in post 52?
As I said in my previous reply to Sahib, NEC will have a minimum conductor size you must run to the motor that can not be lessened because of VD or PFC. But also sort of never requires us to increase that size as a general rule either. Those that increase because of VD do it for efficiency or other design reasons, maybe even an energy code reason.VD thresholds mentioned in NEC are not requirements (other than a few specific instances on specific applications) but rather a suggestion inserted into the text via what NEC calls "informational notes".
NEC requires us to use a table within to determine full load current rating of nearly all standard sized motors you are likely to encounter and is categorized into different tables for single phase, three phase, DC motors, etc, but then next major classification is horsepower then voltage - your motor full load amps you will use is taken from the tables and used for any calculations you will need for that particular load. Those tables factor in worst known efficiency or PF you would ever find on a motor of same output rating and are almost always higher than the nameplate on the motor you will be using.
I think at least part of the idea is that if you must replace the motor it is likely to still be same hp rating but may not have same efficiency or PF as the original - but the conductors will still be sufficient because they were originally selected for worst case motor of same output rating.