Question 263Safety & Environmental - Assistant Engineer

The correct answer is A) to the detecting cabinet. In a typical automatic fire alarm system, all zone circuits are connected in parallel to the detecting cabinet. This configuration allows the detecting cabinet to continuously monitor the status of each individual zone circuit. If a fire is detected in one zone, the detecting cabinet can isolate that zone and trigger the appropriate alarm response without disrupting the operation of the other zones. Connecting the zones in parallel ensures that a fault or malfunction in one zone does not affect the overall system's ability to detect and respond to fires in other areas. The other answer choices are incorrect because B) connecting the zones to a trouble alarm supervising resistor is not the typical configuration, C) zones are not connected in series as this would prevent isolating individual zones, and D) series connection is also not the standard design for automatic fire alarm systems.