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ASTTBC RFPT — Fire Alarm Systems (AL) · Question

During verification of audible signal devices, what technical measurement is required by CAN/ULC-S537 Section 5.5?

Clause 5.5.1.2 requires checking the supervised voltage or current of each signaling branch to ensure it is within the manufacturer's specified limits for the n

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Question: During verification of audible signal devices, what technical measurement is required by CAN/ULC-S537 Section 5.5?

Answer options: ✅ Confirming voltage/current is within the manufacturer’s rated limits for the actual load

  • Measuring wire insulation resistance to ground only
  • Checking the color coding of the signal wires against Section 32 of the CEC
  • Ensuring the end-of-line resistor is a minimum of 10k ohms

Correct answer: Confirming voltage/current is within the manufacturer’s rated limits for the actual load

Explanation: Clause 5.5.1.2 requires checking the supervised voltage or current of each signaling branch to ensure it is within the manufacturer's specified limits for the number of devices connected.

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