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Cable Routing
Basic Guidelines
- Lay out and bind cables of different types (such as power and signal cables) separately. Cables of the same type must be in the same direction. Cables at a small distance can be laid out in crossover mode. When laying out cables in parallel, the distance between power cables and signal cables must be longer than or equal to 30 mm (1.18 in.).
- If you cannot identify cables according to the cable labels, attach an engineering label to each cable.
- Cables must be protected from burrs, heat sinks, and active accessories, which may damage the insulation layers of the 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 the excess lengths of the cable ties and ensure that the cuts are neat and smooth.
- Ensure that cables are properly laid out, supported, or fixed within the cable troughs inside the cabinet to prevent loose connections and cable damage.
- Surplus cable lengths must be coiled and bound to a proper position inside the cabinet.
- Cables must be laid out straightly and bound neatly. The bending radius of a cable varies depending on 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 five times the diameter of the cable, and the cable must be bound before it is bent.
- Do not use cable ties at a place where the cables are bent. Otherwise, the cables may break.
Common Methods
The methods of routing cables inside a cabinet are described as follows:
- Choose overhead or underfloor cabling for power cables based on equipment room conditions (such as the AC power distribution frame, surge protector, and terminal blocks).
- Choose overhead or underfloor cabling for service data cables (for example, signal cables) based on equipment room conditions.
- Place the connectors of all service data cables at the bottom of the cabinet so that the connectors are difficult to reach.
