CFAA Fire Alarm Technician · Question
Which circuit classification requires an End-of-Line (EOL) resistor to supervise the field wiring?
Class B circuits require an End-of-Line (EOL) device to supervise the wiring for opens. CAN/ULC-S524.
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Question: Which circuit classification requires an End-of-Line (EOL) resistor to supervise the field wiring?
Answer options:
- Class A
- Class X ✅ Class B
- Class D
Correct answer: Class B
Explanation: Class B circuits require an End-of-Line (EOL) device to supervise the wiring for opens. 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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