The service-entrance conductors are the service conductors located between the terminals of the service equipment and a point usually outside the building, clear of building walls, where they are joined by a tap or splice to the service drop or overhead service conductors.
The blue arrow is pointing to a protected or sheathed SE cable.
The service point is the point of connection between the facilities of the service utility and the premises’ wiring.
The overhead service conductors are also the overhead conductors between the service point and the first point of connection to the service-entrance conductors at the structure.
The service equipment is the necessary equipment, usually consisting of a circuit breaker(s) or switch(es) and fuse(s) and their accessories, connected to the load-end of service conductors to a building or designated area, and intended to constitute the main control and cutoff of the supply.
It is understood that raceways, fittings and enclosures housing service conductors are also part of the service equipment. Meter socket enclosures are not considered service equipment. Meter enclosures do not have interrupting ratings, disconnecting means, or overcurrent protection.