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ASTTBC RFPT — Fire Alarm Systems (AL) · Question

When verifying a two-stage fire alarm system, the verifier must record the time delay for the automatic transition from Alert to Alarm. What is the standard maximum time allowed by NBCC?

Table 1, Section 4.5 requires quantifying the time delay for the automatic move from Alert to Alarm stage (typically 5 minutes per NBCC).

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Question: When verifying a two-stage fire alarm system, the verifier must record the time delay for the automatic transition from Alert to Alarm. What is the standard maximum time allowed by NBCC?

Answer options:

  • 60 seconds
  • 2 minutes ✅ The time specified in the design (usually 5 minutes per NBCC)
  • 10 minutes

Correct answer: The time specified in the design (usually 5 minutes per NBCC)

Explanation: Table 1, Section 4.5 requires quantifying the time delay for the automatic move from Alert to Alarm stage (typically 5 minutes per NBCC).

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