CFAA Fire Alarm Technician · Question
Where must the End-of-Line resistor be physically located on a Class B circuit for proper supervision?
The EOL must be at the electrically last device to ensure the entire length of the cable is monitored. CAN/ULC-S524.
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Question: Where must the End-of-Line resistor be physically located on a Class B circuit for proper supervision?
Answer options: ✅ After the last device on the circuit
- Inside the Fire Alarm Control Panel (FACP)
- At the first device on the circuit
- In the middle of the loop
Correct answer: After the last device on the circuit
Explanation: The EOL must be at the electrically last device to ensure the entire length of the cable is monitored. CAN/ULC-S524.
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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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