CFAA Fire Alarm Technician · Question
How frequently must the operation of ancillary device relays be tested according to CAN/ULC-S536?
S536 requires that during an annual test, all ancillary functions must be tested. This includes verifying the contact closure and the actual operation of the co
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Question: How frequently must the operation of ancillary device relays be tested according to CAN/ULC-S536?
Answer options: ✅ Every 12 months (Annually)
- Every 6 months (Semi-annually)
- Only during initial verification
- Every 24 months
Correct answer: Every 12 months (Annually)
Explanation: S536 requires that during an annual test, all ancillary functions must be tested. This includes verifying the contact closure and the actual operation of the controlled device (e.g., fan stopping).
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Question explanations
- The primary power for a fire alarm system must be:
- If a 120VAC primary power circuit for a fire alarm control unit is consuming 60 Watts of power, what is the cu
- In a steady-state DC circuit, if the conductor length is doubled while maintaining voltage and wire gauge, wha
- A resistor is rated at 10 Watts at 24VDC. If the voltage drops to 20VDC, what is the new power dissipation?
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