i haven't had a NEC code book in many years
is that 'residential' or commercial/industrial ratings
and yes there are different codes for different applications
at least there used to be some differences, when i was pulling wiring back in the 80's
man old age is a pain, trying to remember this stuff
IIRC an RV is residential and that 30amp pedestal only has (2) breakers
a 30 and a 20
so even pulling 28 amps or so, you don't have the the heat build up you have in an industrial setting with a stack of breakers feeding a stack of pump motors or machinery
that will run run mostly 24/7
still i would probably run only (1) a/c at a time and alternate them as needed
