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ASTTBC RFPT — Fire Alarm Systems (AL) · Question

What are the secondary power requirements for a fire alarm system equipped with emergency voice communication (EVAC)?

Buildings with voice communication systems (emergency loud speakers) require 30 minutes of alarm duration compared to the 5 minutes required for standard horn s

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Question: What are the secondary power requirements for a fire alarm system equipped with emergency voice communication (EVAC)?

Answer options:

  • 10 minutes standby, 1 hour alarm
  • 24 hours standby, 10 minutes alarm ✅ 24 hours standby, 30 minutes alarm
  • 60 hours standby, 2 hours alarm

Correct answer: 24 hours standby, 30 minutes alarm

Explanation: Buildings with voice communication systems (emergency loud speakers) require 30 minutes of alarm duration compared to the 5 minutes required for standard horn systems. Standing standby remains 24 hours.

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