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ASTTBC RFPT — Fire Alarm Systems (AL) · Question

According to S524, a trouble condition or failure in an ancillary circuit must:

A failure in the ancillary circuit (like a short in a door holder coil) must not prevent the fire alarm system from detecting a smoke detector alarm. This is ca

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Question: According to S524, a trouble condition or failure in an ancillary circuit must:

Answer options: ✅ Prevent the fire alarm system from operating correctly

  • Cause a supervisory signal at the fire department monitoring station
  • Not affect the operation of the fire alarm initiating and notification circuits
  • Automatically trigger a sprinkler discharge

Correct answer: Prevent the fire alarm system from operating correctly

Explanation: A failure in the ancillary circuit (like a short in a door holder coil) must not prevent the fire alarm system from detecting a smoke detector alarm. This is called 'isolation' or 'non-interference'.

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