CFAA Fire Alarm Technician · Question
What happens if the data wire between the main FACP and a remote annunciator is cut (open circuit)?
If the communication link (DCL) to the annunciator fails, the FACP must register a trouble signal because it can no longer update the remote display.
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Question: What happens if the data wire between the main FACP and a remote annunciator is cut (open circuit)?
Answer options:
- The FACP sounds an alarm. ✅ The FACP sounds a trouble signal.
- The annunciator turns off all lights.
- The monitoring station is called for a fire signal.
Correct answer: The FACP sounds a trouble signal.
Explanation: If the communication link (DCL) to the annunciator fails, the FACP must register a trouble signal because it can no longer update the remote display.
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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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