H3C Technologies H3C S7500E Series Switches - Manual (Page 162)

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• Bind the cables wherever cable bending cannot be avoided. However, the cable ties cannot be
placed inside the bending area in case of the likelihood of cable core break due to excessive stress.
See the following figure.
Figure 72 Cable binding example 3
• The spare cables or excessive cable parts should be folded and bound and placed at a right place
in the rack or on the cable routing slot. A "right place" refers to the place where the cables will not
affect the operation of the switch or impair the switch, or be damaged.
• The power cables cannot be tied on the slide rails of any mobile components.
• Reserve some redundancy for the cables connecting to the mobile parts, the PGND cable of the
door for example, to free the cables from possible stress. Such a mobile part should be installed in
such a way that the extra cable segments will not contact the heat source, sharp points, or edges.
Use high temperature cables near the heat sources.
• For the cable terminals attached using screw threads, the screws or nuts should be securely fastened
and prevented from loosing. See the following figure:
Figure 73 Cable attaching example
(1) Flat washer (2) Spring washer (3) Nut
• When using a hard power cable, attach it near its terminal to free the terminal and the cable from
stress.
• Do not use tapping screws to fasten the connecting terminals.
• The power cable of the same type and in the same direction should be bound together and kept
organized.
(1) (1)(2) (3) (1) (1)(2) (3)