CFAA Fire Alarm Technician · Question
When calculating the required battery capacity for a Fire Alarm Control Panel, which factor represents the 'Quiescent Current'?
The 'Passive' state or standby consumption of the internal electronics remains constant regardless of line voltage fluctuations within the 85-110% rating. Only
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Question: When calculating the required battery capacity for a Fire Alarm Control Panel, which factor represents the 'Quiescent Current'?
Answer options:
- Voltage drop on the SLC loop
- Total current of all notification appliances in alarm
- The standby current consumption of the internal FACP electronics ✅ The current required to charge the batteries from 0%
Correct answer: The current required to charge the batteries from 0%
Explanation: The 'Passive' state or standby consumption of the internal electronics remains constant regardless of line voltage fluctuations within the 85-110% rating. Only the load changes based on field device activity.
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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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