CFAA Fire Alarm Technician · Question
Per CAN/ULC-S524, what is a requirement for the routing of the supply and return conductors of a Class A circuit?
CAN/ULC-S524 Section 3.3 requires that Class A outgoing and return conductors be routed in separate raceways or otherwise separated to prevent simultaneous dama
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Question: Per CAN/ULC-S524, what is a requirement for the routing of the supply and return conductors of a Class A circuit?
Answer options:
- They must be in the same conduit ✅ They should be routed separately to prevent physical damage to both paths
- They must use shielded cable only
- They must be at least 10 meters apart at all times
Correct answer: They should be routed separately to prevent physical damage to both paths
Explanation: CAN/ULC-S524 Section 3.3 requires that Class A outgoing and return conductors be routed in separate raceways or otherwise separated to prevent simultaneous damage to both.
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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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