Listed Cable Suitable for Use Under Raised Floors of ITE Rooms

Interconnecting cables under raised floors that support information technology equipment shall be Type _____.

a) RF
b) UF
c) LS
d) DP

See answer and applicable Code reference

The correct anser is: d) DP

Article 645 covers equipment, power-supply wiring, equipment interconnect wiring, and grounding of information technology equipment and systems in an information technology equipment room. Section 645.5 focuses on supply circuits and interconnecting cables. As per 645.5(E)(6)a, "Listed Type DP cable having adequate fire-resistant characteristics suitable for use under raised floors of an information technology equipment room".


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