Oh of course. MLO service panelboards were removed from the 2020 so I am guessing exception #1 basically was deleted, and what used to be exception 2 in the 2014 is now exception 1. IMO that is one of the worst code changes and I guess I struck it from my memory in hopes it would go away.
I honestly dont even understand what that exception is saying.
I don't really understand it either. What I wanted it to mean was that I could feed a main lug panel with a feeder tap as long as the sum of the breakers in the panel does not exceed the rating of the panel. That makes logical sense to me.