Product Brochure

www.carlon.com

system shall be so arranged, with approved smoke

detection devices, that upon the detection of fire or

products of combustion in the underfloor space the

circulation of air will cease.

(4) Openings in raised floors for cables protect cables

against abrasions and minimize the entrance of

debris beneath the floor.

(5) Cables, other than those covered in (2) and those

complying with (a), (b), and (c), shall be listed as

Type DP cable having adequate fire-resistant char-

acteristics suitable for use under raised floors of an

information technology equipment room.

(a) Interconnecting cables enclosed in a raceway.

(b) Interconnecting cables listed with equipment

manufactured prior to July 1, 1994, being

installed with that equipment.

Types CL2, CL3, and PLTC (Article 725); Type

ITC (Article 727), Types NPLF and FPL (Article

760); Types OFC and OFN (Article 770); Types

CM and MP (Article 800); and Type CATV

(Article 820). These designations shall be

permitted to have an additional letter P or R or

G. Green, with one or more yellow stripes,

insulated single conductor cables, 4 AWG and

larger, marked “for use in cable trays” or “for

CT use” shall be permitted for equipment

grounding.

FPN: One method of defining fire resistance is by

establishing that the cables do not spread fire to

the top of the tray in the “Vertical Tray Flame

Test” referenced in ANSI/UL 1581-1991, Standard

for Electrical Wires, Cables, and Flexible Cords.

Another method of defining fire resistance is for

the damage (char length) not to exceed 1.5 m

(4 ft. 11 in.) when performing the CSA “Vertical

Flame Test – Cables in Cable Trays,” as described in

CSA C22.2 No. 0.3-M-1985, Test Methods for

Electrical Wires and Cables.

(6) Abandoned cables shall not be permitted to remain

unless contained in metal raceways.