Which relay must be energized to activate the demarcation lights?

The RN Relay is responsible for energizing the demarcation lights on an escalator. These lights serve an important safety function, indicating to pedestrians that the escalator is operational and clearly marking the entry and exit points. When the RN Relay is activated, it allows electrical current to flow to the demarcation lights, turning them on. This provides visual guidance to users, enhancing safety and helping to prevent accidents.

Understanding the role of the RN Relay can highlight the importance of proper relay operation in the overall functionality and safety features of escalators. Each relay within the system has a specific function, and in this case, the RN Relay is uniquely tasked with activating the demarcation lights, whereas the other relays serve different purposes in the operation of the escalator system.