Concerning the illustrated fire detection and alarm system, when the system is operating normally and under supervision, what is the status of the ground detector and the fire alarm relays? EL-0114

Correct Answer: Option C — The ground detector relay is de-energized and the fire alarm relay is energized.

Fire detection and alarm systems under normal supervised conditions maintain continuous monitoring loops. The fire alarm relay remains energized to supervise circuit continuity, while the ground detector relay remains de-energized until an insulation failure occurs.