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ASTTBC RFPT — Fire Alarm Systems (AL) · Question

When using a voice communication system, an open or short circuit on an audible signal circuit in one floor area must:

For voice communication systems, S524 requires 'survivability' for notification circuits. A short circuit on one floor must not affect the audibility of signals

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Question: When using a voice communication system, an open or short circuit on an audible signal circuit in one floor area must:

Answer options:

  • Notify the fire department immediately
  • Cause the entire building's audio to fail for safety
  • Power down the amplifiers ✅ Not involve any area other than that floor area during an alarm

Correct answer: Not involve any area other than that floor area during an alarm

Explanation: For voice communication systems, S524 requires 'survivability' for notification circuits. A short circuit on one floor must not affect the audibility of signals on another floor. This often requires Class A wiring or isolation modules.

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