Notes for cat6 cabling

Key points for installation of category 6 Cabling:
Because Category 6 Cabling has high performance requirements, it requires higher installation quality. Responsible manufacturers will strongly recommend installation in strict accordance with the installation rules set forth in the Cabling Standards or provided by the manufacturer.
The most common problem in cabling is the tension caused by cables during cabling. When wiring, the cable tension cannot exceed the maximum tolerable tension stipulated by the cable manufacturer. If the tension is too large, the twisted pair wires in the cables will change to the number of layers, seriously affecting the ability of the cables to resist noise, such as NEXT and FEXT. As a result, the cables will be twisted and released, and may even cause damage to the conductor.
When pulling the cable from the winding wheel, make sure that the cable may be twisted. If the cable is twisted, the cable should be replaced even if it is broken. Otherwise, even if the installation engineer pulls the twisted cable straight, the cable will be detected during the test. Even if it passes through, there will also be hidden risks. As the number of these hidden risks increases, the six types of performance margin will be minimized, and faults will occur.
Another important note is the bending radius of the cable. Avoid excessive cable bending during cabling, because this will change the Layer Space of the cable's internal line. When the tension is too large, the twisted line will be released to form a mismatch impedance, so that the return loss performance is not up to standard. In addition, the relationship between the layers of the four pairs in the cable may also change, resulting in a reduction in noise resistance. Therefore, all manufacturers recommend that the bending radius of cables be no less than four times the diameter of the installed cables. This indicates that the bending radius must be greater than 25mm for typical six types of cables. Most of these problems occur in the distribution cabinet, and most of them will not be discovered, that is, the most careful installer may also have such problems. Therefore, the manufacturer recommends proper and reasonable cable management racks.
In addition to the above, the bending radius of the cable is quite different and more strict) constraints. Generally, the minimum bending radius of the cable during installation is 8 times the diameter of the cable. In fact, this means that a 25mm radius bending radius is allowed in the rear box, while the minimum bending radius of the Guide cable is 50mm.
It is worth noting that cables should not be bundled too tightly, so as not to compress cables. This problem occurs when many cables are bound and bundled. The stress on the peripheral cables is higher than that on the harness. If the pressure is too high, the twisted pair in the cable will be deformed, thus affecting some performance of the cable. The main manifestation is that the loss is the main fault. If there are multiple limitations and bindings, the impact of the loss will be accumulated, and the last result will be the total loss. Pay special attention to this point in the distribution cabinet. Because there are many cables in the Distribution Cabinet, in order to keep the cables neat, the cables may be bundled too tightly, and behind the plug-in, it is also prone to such problems. The best way to solve this problem is to use a cable hook or loop. These devices do not compress cables, and they are easy to remove. However, this method may also damage the cable.
The number of cables for each bundle is also important in cabling. When cables are laid at a distance in parallel, the cables of different cables in the cable bundle will produce a large capacitive coupling if they have the same twisting rate, resulting in a sharp increase in the Cross string combination. This phenomenon is called external cross-string aggregation, even though it is not listed or accurately defined in any Cabling Standards so far. The best way to reduce the adverse effect of external cross-string collapse is to reduce the length of parallel wiring and install the cable bundle randomly.
The removal of cable skin is also exquisite. The length of the skin to be removed is not specified in the TIA or ISO cabling standard at the cable end. Remove as little as possible to ensure the twisting rate and number of layers in the cable. The skin removed from the IDC is long. This will affect the NEXT and fext performance of the cat6 cabling system.
At the end of the cable, the twist of each line in the cable is as close as possible to the IDC. The cable manufacturer calculates the twisting rate of the outlet pair. modifying it at will reduce the cable performance. Although the 5E cabling standard for ISO and TIA specifies a cable pair with a length range of 13 MM without twisting), this is not applicable to category 6. Now we recommend that you follow the manufacturer's advice. In the end, such as the wrong sequence of the line pair and the contact conductor, it is best to twist it to ensure correct alignment with the IDC. This ensures the twisting rate and number of layers in the cable to ensure the best transmission performance. Too many lines in the IDC will weaken the NEXT and fext performance of the cat6 cabling system.

Pay attention to the following six precautions during the construction of cat6 cabling:
1. Because the outer diameter of the six types of cables is thicker than that of the general five types of cables, in order to avoid the winding of cables, especially at the elbow, the fill degree of the pipe diameter must be paid attention to during pipeline design, generally, it is recommended that a pipe with a diameter of 20mm be placed with two cat6 cables.
Ii. Reasonable cable tray design to ensure proper cable bending radius. When you bypass other cable slots from top to bottom, the turning slope should be gentle. Pay attention to whether the cables at both ends can be covered with the cover plate without pressure loss.
3. Pay attention to Tension Control During Wire laying. For cables packed with reels, it is recommended that at least one worker be arranged at both ends to put the sleeve on the self-made wire rod, the laying end workers first pre-pull some cables from the scroll box for the collaborators to extract the cables from the other end of the pipeline. The pre-drawn lines should not be too many to avoid tangle of multiple cables on the ground.
4. After the wire pulling process ends, the redundant cables at both ends should be organized and protected. When the wire is laid, the original rotation direction should be followed. The diameter of the coil should not be too small, if possible, use the waste wire head to be fixed on the bridge, ceiling or in the carton. Make a note to remind other personnel not to step on.
5. When organizing, binding, and placing cables, do not make redundant cables too long. Do not overlay the cables, enable the coils to consolidate and fix the cables.
6. During the entire construction period, the technical process should be notified in a timely manner. The project owner of the building should communicate with each other in a timely manner, notify Party A immediately if any problem is found, and complete the tasks of this type of work before other types of work start.