Installation of air lines of power transmission – devices supplying electricity to objects using wires – is a rather complicated and multi -stage process. Fastening of wires on special supports that are not guides, it is better to trust only professionals in their field. Only in this case, safety precautions and all requirements for installation will be fully observed.
Electricians who have 4-5 electrical safety groups are allowed to work on the installation of air lines of power. One of the important conditions for resolution is the right to work with a voltage of more than 1000 V. Norma-Cabel recalls the importance of cooperation with specialists only the highest qualifications.
During the installation of power lines to the private sector, there are a number of nuances. So, for fastening the cable, it is optimal to use self -supporting insulated supports with a high service life. Subsequently, they can also be used as supports for making communication lines (telephone, Internet, satellite television, etc. D.).
As a rule, in the installation of air lines of power lines, not only different types of wires are used, but also clamps, for example, such as NB 2 6.
Punces for power lines differ in production material. They are:
metal;
wooden;
concrete.
As for the cables for the overhead power line, both one -core and multi -core wires are used for their installation. To ensure the system of absolute safety, use special insulators. They can be made of polymer material, porcelain or glass.
Previously, vinyl and rubber were used as isolating elements, however, in the modern electrical industry it was decided to refuse due to their short -lived in the conditions of an aggressive environment.
Rubber and vinyl are very quickly destroyed due to the effects of constant humidity or sharp temperature drops. Often this caused a short circuit in an electric circuit.
Non -illed wires, which are an alloy of aluminum and iron, are one of the most budget options. Such a single -core cable is most often used during electrical work carried out by city utilities.
The material without isolation differs in a low price, which allows to ensure the saving of the budget of the local administration.