210.71, covering meeting rooms, went in to the 2017 NEC
, but was moved in the 2020 edition to 210.65.
However, 210.65 does not apply to Jay's example:
"Section 520 sidebar: I've got a new house
with a main auditorium
of 350 retractable seats, and it has zero utility receptacles around the walls. Is this the "over 1000 sq ft" exemption, or something else, would you think?"
because of this informational note:
Informational Note No. 2: Examples of rooms that are not meeting rooms include auditoriums, schoolrooms, and coffee shops.