What does a yellow tower beacon indicate?

A yellow tower beacon typically indicates that there is load on the generator. This signaling is essential in power generation and distribution systems, as it provides operators with a visual cue about the operational status of the generator. When a generator is actively supplying power and has a load, the yellow beacon alerts personnel that the system is in an operational state, which is crucial for safety and monitoring purposes.

The other options relate to different operational states or functionalities of the system but do not accurately describe the meaning of the yellow tower beacon. Understanding these signals helps in efficient management and real-time awareness in environments where electrical and power systems are critical.