CABLE CAPACITY FOR TRAYS AND CONDUIT
CAT 5E CAT 6 CAT 6A
UTP UTP UTP UTP UTP with
Isolation Wrap
Shielded
Average OD
0.185 in
(5 mm)
0.23 in
(6 mm)
0.33 in
(8 mm)
0.3 in
(8 mm)
0.275 in
(7 mm)
0.29 in
(7 mm)
Cable Tray 25% 50% 25% 50% 25% 50% 25% 50% 25% 50% 25% 50%
2" x 6"
(51 x 152 mm)
111 222 72 144 35 70 42 84 50 101 45 90
4" x 8"
(102 x 203 mm)
298 596 192 384 93 186 113 226 134 269 121 242
6" x 20"
(152 x 508 mm)
1116 2232 722 1444 350 700 424 848 505 1010 454 908
Conduit 40% 40% 40% 40% 40% 40%
¾"
(19 mm) 6 5 1* 1* 3 2*
1"
(25 mm) 11 8 3 4 5 4
1 ¼" (32 mm) 19 14 5 6 8 7
1 ½"
(38 mm) 25 19 8 10 11 10
* Conduit Fill Ratio NEC Chapter 9: 1 Cable = 53% maximum fill ratio, 2 cables = 31%, 3 or more = 40%
Cable Tray Fill
TIA-569-D recommends 25% fill at initial installation and
up to 50% with unplanned additions. If a single cable tray
will also carry power cables, a physical barrier is required to
comply with the NEC and IEC. Finally, ensure tray support
spacing is sucient to prevent excessive sagging. Consider
solid bottom tray for higher density applications.
Note: A tray at 25% fill looks half-full. A tray at 50% fill looks completely full.
Cable trays should be loaded no more than six inches deep.
Conduit Fill
A maximum conduit fill ratio of 40% is recommended by
TIA-569 standards to accommodate cable bundle bend
radius requirements and allow for future expansion.
Pathways and Spaces
Leviton Network Solutions
|
(800) 722 2082
|
+1 (425) 486 2222
|
leviton.com/ns 17
Cable Tray Fill and Conduit Fill
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