What is illuminated by the contacts once the buck and head contactors are energized?

When the buck and head contactors are energized, pilot lights are illuminated. Pilot lights serve as visual indicators that indicate the status of electrical circuits or devices. In the case of energized contactors, the illumination of pilot lights communicates that the circuit is active, allowing operators or technicians to confirm operation without needing to physically check the equipment. This function is crucial for maintaining operational safety and efficiency, especially in environments where visibility may be limited or where quick status checks are necessary.

While indicator panels, power meters, and control dials might provide information about the system, they do not specifically indicate the energization of contactors in the same straightforward manner as pilot lights do. Indicator panels may display multiple parameters, power meters measure electrical consumption, and control dials adjust settings but do not directly correlate to the immediate status indication provided by pilot lights.