ASTTBC RFPT — Fire Alarm Systems (AL) · Question
To maintain the integrity of a Class A (DCLC) circuit, what is the requirement for the 'feed' and 'return' conductors in a vertical riser?
S524 Cl 4.1.2.2 states that the return side of the Class A loop must not be in the same conduit/raceway as the feed side, as a single impact could sever both, d
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Question: To maintain the integrity of a Class A (DCLC) circuit, what is the requirement for the 'feed' and 'return' conductors in a vertical riser?
Answer options: ✅ They cannot be in the same raceway/conduit.
- They must be twisted together.
- They must be shielded.
- They must be at least 14 AWG.
Correct answer: They cannot be in the same raceway/conduit.
Explanation: S524 Cl 4.1.2.2 states that the return side of the Class A loop must not be in the same conduit/raceway as the feed side, as a single impact could sever both, defeating the redundancy.
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Question explanations
- Which of the following constitutes a system 'deficiency' rather than a 'non-conformance' to current standards?
- When a deficiency is corrected, what specific information MUST be recorded in the log?
- Which of the following would be categorized as a 'Non-Conformance' to the Installation Standard (S524) in an i
- In the event of a deficiency that renders the fire alarm system inoperative, what is the mandatory reporting r
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