What type of outlet is defined as providing direct power access to a load?

The definition of an outlet that provides direct power access to a load is best represented by a branch circuit outlet. A branch circuit outlet is specifically designed to connect electrical devices directly to the branch circuit wiring that carries power from the service equipment to the outlet. This type of outlet allows devices or appliances to draw electrical energy necessary for operation, effectively serving as the point of access where electrical power is made available.

The other options represent different types of connections within electrical systems but do not specifically refer to outlets that provide direct power access for a load as a branch circuit outlet does. For example, a device box outlet typically refers to the enclosure where electrical devices, such as switches and outlets, are mounted. A service entrance outlet refers to the method of bringing electrical power into a building, while a feeder outlet is more associated with feeding power to another circuit. Each of these plays a unique role in electrical distribution but does not directly serve the function specified in the question the way a branch circuit outlet does.