O.K., If it's utility owned transformer, IMO, you have service conductors, not feeders to your 2000 amp service main.
NEC Art 100:
Service Point. The point of connection between the facilities
of the serving utility and the premises wiring.
Informational Note: The service point can be described as
the point of demarcation between where the serving utility
ends and the premises wiring begins. The serving utility
generally specifies the location of the service point based
on their conditions of service.
In most situations (US) the utility supplies the transformer and the cables to the premises are service conductors, which seems to be your situation. Occasionally larger facilities will have their own transmission lines and transformers in which case you would have a separately derived system. I was clarifying.
NEC Art 100:
Service Point. The point of connection between the facilities
of the serving utility and the premises wiring.
Informational Note: The service point can be described as
the point of demarcation between where the serving utility
ends and the premises wiring begins. The serving utility
generally specifies the location of the service point based
on their conditions of service.
In most situations (US) the utility supplies the transformer and the cables to the premises are service conductors, which seems to be your situation. Occasionally larger facilities will have their own transmission lines and transformers in which case you would have a separately derived system. I was clarifying.