B-1
Appendix B Engineering Labels for Cables
Engineering labels are affixed to both ends of the various cables to identify the physical positions of
cables on different devices. Labels on the cables facilitate correct and orderly connection of cables, and
easy maintenance after the installation.
There are two types of engineering labels, specialized for the power cables and signal cables
respectively. The power cables include the AC power cables and DC power cables (excluding the
power cable that connects the distribution box and the cabinet). The signal cables include external
cables of alarm box, Ethernet cables, optical fibers, trunk cables and subscriber cables (excluding the
antenna feeders).
In case there is special requirement from the user of the equipment on the description method of the
labels, the labels should be printed accordingly. However, this must be stated in the self-check report.
Introduction to Labels
Material
z
Material: Polyester (PET), with UL and CSA certifications
z
Color: chalk white
z
Thickness: 0.09mm
z
Ambient temperature: -29~149 degrees Celsius
z
Laser printing or handwriting with oiliness markers
Type and Shape
There are two types of engineering labels for power cables and signal cables respectively.
Label for signal cables
The label for signal cables is L-shaped with fixed dimensions, as shown in Figure B-1 (expressed in
mm).
