CFAA Fire Alarm Technician · Question
Which of the following is an acceptable primary power source for a fire alarm control unit?
CAN/ULC-S524 requires a 120VAC dedicated circuit, typically with a breaker lock. 240VAC is not standard for Canadian FACP primary power.
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Question: Which of the following is an acceptable primary power source for a fire alarm control unit?
Answer options: ✅ 120 VAC dedicated circuit
- 120 VAC from the nearest lighting circuit
- 240 VAC dedicated circuit
- Any 15A outlet in the electrical room
Correct answer: 120 VAC dedicated circuit
Explanation: CAN/ULC-S524 requires a 120VAC dedicated circuit, typically with a breaker lock. 240VAC is not standard for Canadian FACP primary power.
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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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