Factors affecting cable performance and placement in cable routing

I. Six factors affecting the performance of the cable: 1. Ultraviolet (UV): Do not apply cables without UV protection in direct sunlight environment. 2. Heat: Cables in metal pipes or trunking at high temperatures, many polymeric materials at such temperatures will reduce the service life. 3. Water: Moisture in the LAN twisted-pair cables increases the capacitance of the cables, which reduces the impedance and causes crosstalk in the near-end Mechanical damage (repair costs): Fiber optic cables are very expensive to repair and require at least two terminations at each break point.5. Grounding: If the cable's shield needs to be grounded, the appropriate standards must be adhered to.6. Total routing length (not just inter-building)-The total length of LAN twisted-pair cables used between buildings with an exterior grade is not the same. The total length of the cable should be limited to 90 meters. For 100Mps or 1000Mbps networks, the laying distance cannot exceed this limit. If the laying distance is between 100 and 300 meters, then fiber optic cable should be selected.-II. Whether the cable is placed in:1. Under the eaves:The cable can be applied only if it is not directly exposed to sunlight or super high temperature, standard LAN cable is recommended to be used in ducts.2. Outside wall:Avoid direct sunlight on the wall and man-made damages.3. In the ducts (plastic or metal ones). If in ducts, pay attention to the damage of plastic ducts and the heat conduction of metal ducts.4. Suspended applications/overhead cables:Consider the sagging and pressure of the cable. Which type of bundling is intended and whether the cable is exposed to direct sunlight.5. Laying directly in underground cable trenches, this environment is the least controlled. The cable trench installation should be checked regularly for dryness or dampness.6. Underground ducting:For future upgrades, cable replacement and isolation from surface pressure and the surrounding environment, auxiliary ducting is a better method of isolation. However, do not expect the ducts to remain dry forever, as this will affect the choice of cable type.

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