CFAA Fire Alarm Technician · Question
What is the consequence of installing a Class B EOL resistor directly at the control panel terminals instead of at the end of the field wiring?
Placing the EOL inside the panel (Short-cycling) means the field wiring is not being monitored; a break in the field wire would not be detected. CAN/ULC-S524.
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Question: What is the consequence of installing a Class B EOL resistor directly at the control panel terminals instead of at the end of the field wiring?
Answer options:
- The panel will enter permanent alarm
- The circuit will short circuit ✅ The field wiring is no longer supervised
- The battery will drain faster
Correct answer: The field wiring is no longer supervised
Explanation: Placing the EOL inside the panel (Short-cycling) means the field wiring is not being monitored; a break in the field wire would not be detected. 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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