Huawei RH8100 V3 - Laying out Cables

3.4.7 Laying Out Cables
Basic Rules
● Lay out and bind cables of dierent types of cables (such as power and signal
cables) separately. Ensure that the distance between power cables and signal
cables is longer than or equal to 30 mm (1.18 in.) when you lay out the
cables in parallel.
● Lay out cables of the same type in the same direction. Cables near each other
can be routed in crossover mode.
● If you cannot identify cables using the cable labels, attach an engineering
label to each cable.
● Protect cables from burrs, heat sinks, and active accessories, which may
damage the insulation layers of cables.
● Ensure that the length of cable ties for binding cables is appropriate. Do not
connect two or more cable ties together for binding cables. After binding
cables properly, trim
o the excess lengths of the cable ties and ensure that
the cuts are neat and smooth.
● Ensure that cables are properly routed, supported, or
xed within the cable
troughs inside the cabinet to prevent loose connections and cable damage.
● Coil any surplus lengths of cables and bind them to proper positions inside
the cabinet.
● Route cables straightly and bind them neatly. The bending radius of a cable
varies with the position where the cable is bent.
– If you need to bend a cable in its middle, the bending radius must be at
least twice the diameter of the cable.
– If you need to bend a cable at the output terminal of a connector, the
bending radius must be at least
ve times the cable diameter, and the
cable must be bound before bending.
– Do not use cable ties at a place where the cables are bent. Otherwise, the
cables may break.
Common Cable Routing Methods
The methods of routing cables inside a cabinet are described as follows:
● Determine overhead cabling and
underoor cabling for power cables based
on
specic conditions of the equipment room. For example, take into
consideration the AC power distribution frame (PDF), surge protector, and
terminal block.
● Determine overhead cabling and
underoor cabling for service data cables
based on
specic conditions of the equipment room.
● Place the connectors of all service Ethernet cables at the bottom of the
cabinet in order so that the connectors are dicult to reach.
Cable Routing Rules
RH8100 V3 Server
User Guide 3 Installing the RH8100 V3
Issue 30 (2019-12-19) Copyright © Huawei Technologies Co., Ltd. 102