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ASTTBC RFPT — Fire Alarm Systems (AL) · Question

Which standard defines the 'Class' of a circuit (e.g., Class A vs Class B wiring)?

S524 Figure 1 (and related clauses) provides the wiring requirements for various classes of circuits (Class A, Class B, etc.).

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Question: Which standard defines the 'Class' of a circuit (e.g., Class A vs Class B wiring)?

Answer options:

  • NBCC Part 9
  • BC Fire Code Div C
  • CAN/ULC-S536 Section 10 ✅ CAN/ULC-S524 Section 4 or 5

Correct answer: CAN/ULC-S524 Section 4 or 5

Explanation: S524 Figure 1 (and related clauses) provides the wiring requirements for various classes of circuits (Class A, Class B, etc.).

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