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ASTTBC RFPT — Fire Alarm Systems (AL) · Question

For residential suites, which standard is specified by the NBCC for the design of the smoke alarms themselves?

NBCC 3.2.4.21 specifies S531 for smoke alarms (battery or AC powered) as opposed to S524 for system smoke detectors.

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Question: For residential suites, which standard is specified by the NBCC for the design of the smoke alarms themselves?

Answer options:

  • CAN/ULC-S524 ✅ CAN/ULC-S531
  • CAN/ULC-S537
  • NFPA 72

Correct answer: CAN/ULC-S531

Explanation: NBCC 3.2.4.21 specifies S531 for smoke alarms (battery or AC powered) as opposed to S524 for system smoke detectors.

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