In building code classifications for cabling, which space corresponds to CMP?

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Multiple Choice

In building code classifications for cabling, which space corresponds to CMP?

Explanation:
CMP is the rating for cables installed in plenum spaces, the air-handling parts of a building where air is circulated. These spaces require cables with low smoke and flame characteristics to prevent rapid spread of fire and smoke through the ventilation system. So, CMP corresponds to plenum spaces, reflecting the need for fire-safety performance in that environment. By comparison, general-use areas use non-plenum cable (CM), riser spaces use riser-rated cable (CMR), and crawlspaces aren’t a standard plenum/non-plenum category.

CMP is the rating for cables installed in plenum spaces, the air-handling parts of a building where air is circulated. These spaces require cables with low smoke and flame characteristics to prevent rapid spread of fire and smoke through the ventilation system. So, CMP corresponds to plenum spaces, reflecting the need for fire-safety performance in that environment. By comparison, general-use areas use non-plenum cable (CM), riser spaces use riser-rated cable (CMR), and crawlspaces aren’t a standard plenum/non-plenum category.

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