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ASTTBC RFPT — Fire Alarm Systems (AL) · Question

If the circuit to an ancillary device is not supervised, what is the maximum allowed distance between the fire alarm relay and the device?

If the wiring between the fire alarm control unit and the ancillary relay is not supervised for opens/shorts, the relay must be mounted within 3m of the device.

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Question: If the circuit to an ancillary device is not supervised, what is the maximum allowed distance between the fire alarm relay and the device?

Answer options:

  • 10 meters
  • 5 meters ✅ 3 meters
  • 1 meter

Correct answer: 3 meters

Explanation: If the wiring between the fire alarm control unit and the ancillary relay is not supervised for opens/shorts, the relay must be mounted within 3m of the device.

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