CFAA Fire Alarm Technician · Question
According to ULC standards, fire alarm battery chargers must be capable of recharging a depleted battery to full capacity within:
The charger must be tested to ensure it can recharge the batteries within 24 hours to the level required for the system.
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Question: According to ULC standards, fire alarm battery chargers must be capable of recharging a depleted battery to full capacity within:
Answer options:
- 1 hour
- 12 hours ✅ 24 hours
- 48 hours
Correct answer: 24 hours
Explanation: The charger must be tested to ensure it can recharge the batteries within 24 hours to the level required for the system.
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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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