Non-plenum rated cables may be used in a plenum if they are installed in a plenum-rated raceway.

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Prepare for the Burglar and Residential Fire Alarm Test with our comprehensive quiz. Study with multiple choice questions, receive hints and explanations, and ensure you're ready to ace the exam!

Multiple Choice

Non-plenum rated cables may be used in a plenum if they are installed in a plenum-rated raceway.

Explanation:
In plenums, the safety rule is that the installation must be listed for that environment, either by using cables that are plenum-rated or by enclosing them in a listed plenum-rated raceway. When non-plenum cables are placed inside a plenum-rated raceway, the raceway’s listing covers the whole assembly for use in air-handling spaces, meeting the required fire and smoke performance. It isn’t enough to rely on flame-retardant tape, shielding with metal conduit, or special connectors alone, because these measures don’t provide the necessary listed performance for plenums.

In plenums, the safety rule is that the installation must be listed for that environment, either by using cables that are plenum-rated or by enclosing them in a listed plenum-rated raceway. When non-plenum cables are placed inside a plenum-rated raceway, the raceway’s listing covers the whole assembly for use in air-handling spaces, meeting the required fire and smoke performance. It isn’t enough to rely on flame-retardant tape, shielding with metal conduit, or special connectors alone, because these measures don’t provide the necessary listed performance for plenums.

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