ASTTBC RFPT — Fire Alarm Systems (AL) · Question
If a ground fault occurs on a fire alarm control unit's internal wiring, what is the maximum time allowed for the unit to indicate the fault?
Per CAN/ULC-S527, a system 'Trouble' signal must be distinct from 'Alarm' or 'Supervisory' signals. If a supervisory signal is silenced, the trouble lamp must r
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Question: If a ground fault occurs on a fire alarm control unit's internal wiring, what is the maximum time allowed for the unit to indicate the fault?
Answer options: ✅ Visual and audible trouble signal within 200 seconds
- Immediate system shutdown
- Visual trouble signal only after 5 minutes
- Audible alarm signal activation
Correct answer: Visual and audible trouble signal within 200 seconds
Explanation: Per CAN/ULC-S527, a system 'Trouble' signal must be distinct from 'Alarm' or 'Supervisory' signals. If a supervisory signal is silenced, the trouble lamp must remain on but the audible may be silenced if a separate trouble develops. Short circuits on IDC/NAC are specific trouble conditions.
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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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