ASTTBC RFPT — Fire Alarm Systems (AL) · Question
Under CAN/ULC-S527, what is the requirement for the 'Power On' indicator when the system is operating solely on standby batteries?
Section 5.3.4.1 of S527 defines the requirement for the visual 'Power On' indicator. It must be green and stay on as long as any power (AC or DC) is present and
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Question: Under CAN/ULC-S527, what is the requirement for the 'Power On' indicator when the system is operating solely on standby batteries?
Answer options:
- It must flash until the AC returns ✅ It must remain illuminated provided power is available to the system
- It must turn red to show battery use
- It should be extinguished to save battery power during outages
Correct answer: It must remain illuminated provided power is available to the system
Explanation: Section 5.3.4.1 of S527 defines the requirement for the visual 'Power On' indicator. It must be green and stay on as long as any power (AC or DC) is present and the system is operational.
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Question explanations
- Which of the following constitutes a system 'deficiency' rather than a 'non-conformance' to current standards?
- When a deficiency is corrected, what specific information MUST be recorded in the log?
- Which of the following would be categorized as a 'Non-Conformance' to the Installation Standard (S524) in an i
- In the event of a deficiency that renders the fire alarm system inoperative, what is the mandatory reporting r
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