What type of diagram shows the actual wiring connections between unit assemblies or equipment with each wire labeled?

The correct answer is that the diagram showing the actual wiring connections between unit assemblies or equipment, with each wire labeled, is known as a wiring diagram. A wiring diagram provides a detailed representation of the electrical connections and physical layout of a system. It clearly indicates how wires are interconnections and the paths each wire takes, making it easier to troubleshoot and understand the wiring configurations.

Wiring diagrams are especially useful for technicians and electricians when they need to identify specific wires, connections, and circuits within a complex electrical system. By labeling each wire, a wiring diagram provides clarity on connection points, allowing for more efficient installation and maintenance practices.

In this context, while a block diagram offers a conceptual overview of how parts interact without detailing specific connections, a schematic diagram focuses on the electrical symbols and functions rather than the physical layout. An interconnection diagram typically emphasizes how different components connect without detailing every wire, which can lead to confusion in complex systems. Thus, the wiring diagram specifically meets the criteria of showing actual connections with labeled wires.