This is the situation.
Portable classroom composed of two halves, (think of a double wide mobile home) each with a 100 amp main breaker panel that controls the circuits in that half of the building.
The electrician brings TWO 100 amp feeders out to the panels. Each originates in the same service panel with a 2pole 100 breaker.
Based on 225.30 (formerly 225.8 & 9 and 230.84) only ONE feeder or branch circuit, with exceptions for firepumps etc.
To comply with the Code should the electrician (1) use a 200 amp breaker listed for two conductors per pole (2) handle tie the two 100 amp breakers, (3) either or (4)something else ?
Note the panels inside are ten feet apart.
We build them around here and use them but, I'm just not sure.