Which of the following cable types designates that it can safely be run through a drop ceiling?

The correct answer is B. Plenum. Plenum-rated cable is specifically designed and certified for installation in plenum spaces - air-handling areas such as drop ceilings and raised floors where air circulates for HVAC systems. Plenum cable uses a special jacket material (typically FEP or low-smoke PVC) that…

Networking

Question

Which of the following cable types designates that it can safely be run through a drop ceiling?

Options

ASTP
BPlenum
CCAT5e
DUTP

How the community answered

(52 responses)

A
2% (1)
B
94% (49)
C
4% (2)

Explanation

Plenum-rated cable is specifically designed and certified for installation in plenum spaces - air-handling areas such as drop ceilings and raised floors where air circulates for HVAC systems. Plenum cable uses a special jacket material (typically FEP or low-smoke PVC) that emits minimal toxic fumes and smoke if it catches fire, which is critical in spaces that circulate air throughout a building. STP (Shielded Twisted Pair) and UTP (Unshielded Twisted Pair) describe cable shielding characteristics, not fire/safety ratings. CAT5e is a performance category specification. None of these three inherently indicate plenum suitability.

Topics

#plenum cable#cable installation#drop ceiling#network cabling

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