Cable tube: selection and installation tips

21-07-2018

Pipes

Cable laying is a very important process that requires not only knowledge in the field of electrical engineering, but also the basics of manufacturing power or control lines. This is due to the fact that you need to create a kind of protection from external influence and eliminate the extraneous influence of one wire on another. It is for such purposes that the HDPE pipe for cable is used.

Varieties and properties

First we need to say that there are several types of such materials. At the same time, even standard HDPE pipes for electric cables have certain differences, which are used to achieve a specific effect or in a particular area of operation. Therefore, it is worth exploring the most common types in order to have an idea about their characteristics.

Corrugated products are considered the most practical because they have good flexibility and are lightweight.

Kinds

Corrugated metal pipe was the most common in its time.. It created a solid foundation that was very difficult to damage even when using tools. However, during internal breakdown of the cable, it was affected by an electrical current, which could lead to injury.

For some types of work, metal materials are still used, since they additionally perform the function of a kind of screen, eliminating the effect of stray currents.

Currently, the corrugation is used in plastic. At the same time, the material used to create it should not conduct electricity, do not have flammable properties and have good strength. However, for interior use the simplest versions of such products.
It is important to mention that to meet all such requirements, the HDPE pipe for cable is made of two layers. The outer coating has good strength properties, and the inner layer is inherently a dielectric that has self-extinguishing properties.

Technical products of this type are very often carried out in a smooth form and have certain markings that correspond to the cable located in them.

Special attention should be paid to special purpose products.. In some of them, you can seal the cable in a pipe or install at a shallow depth, under footpaths.

Tip! When choosing such products, you should check the availability of special broach inside. It is necessary to make it easier to place the cable in the pipe when laying, without cutting it along. If it is absent, then it is worth thinking very seriously about purchasing such products.

There are certain standards for the depth of the trench for installation, which some craftsmen bypass, referring to the quality and reliability of such pipes, but experts do not recommend

Purpose

First of all, such a holder for pipes and cables is needed in order to protect the product itself from external influence. This may be a shovel, for doing ground work, a slab of a walkway, or an elementary movement of the soil.

When laying in tunnels, products with a large diameter are used to combine entire groups of wires for their overall protection and ease of maintenance.

Also the cable conduit is used to protect people from internal breakdown of the material. This is especially important if the highway passes near places where there are walking routes or places for people to rest.

It is important to note that the installation instructions for certain types of highways require the use of specialized types of protection. For example, very often used pipes, which consist of several layers, one of which is made of metal mesh. This coating is done in order to eliminate the effect on the conductor of stray currents.

Tip! The choice of a particular type of product should be made in accordance with the place of use and the needs for which the wire is used.

Almost all materials for this purpose have a metal broach, to facilitate putting on the cable or wire

Recommendations of specialists

When a similar construction is cut in accordance with the length of the wire, it is very important not to miss the gland for cable entry into the pipe. It is better to fix it at once from one end, and when cutting to leave it whole, until the moment of additional fixation.

The use of PVC systems for such work is allowed only when installing systems with low currents, and sometimes only for organizing the passage through floor slabs or walls

Usually the price of such products is not too high, but this does not mean that you need to immediately acquire their most expensive types. Sometimes even the most, at first glance insignificant, savings can save a significant part of the funds for large amounts of work. (See also cable duct article: features.)
If the work is done by hand, then before laying, it is recommended to make a small pillow of sand to further protect the pipe with cable from sharp objects that may be in the ground. The same is done after installing the conductor.

Even the internal installation must be done in such a way as to create the greatest possible tightness and prevent moisture from entering the inside of the pipe during operation.

Conclusion

After reviewing more videos in this article, you can learn more about these products and their application. At the same time, based on the text above, it is necessary to conclude that some types of work use such pipes without fail, since this is required by safety technology.