In order to minimize the impact of electric current,for example, when striking lightning, a special metal strip is used: galvanized or stainless steel. It is also used as a specially adapted lightning rod for objects and to reduce the risk of current impact on people who may be close to production equipment in case of possible electrical wiring problems. Such material is necessary as a protection for various wires and cables that are located in residential complexes. In addition, such a strip can be used to output voltage in pipelines. This helps to increase the longevity of the pipes, while reducing the effect of corrosion.
It should be noted that the metal strip canused to reduce the risk of electric shock to people and to relieve the stress of natural origin. To do this, a large circle is built of it, which is installed in the ground at a depth of 0.5 meters along the entire perimeter. Due to the coating of the metal strip with zinc or stainless steel its service life is increased by 30-50 years.
When electricity is used, there is alwaysa high probability of occurrence of situations dangerous for the person. Therefore, in order to avoid trouble, a metal strip is used - it is a reliable tool that should be used when conducting electricity in homes and in industry. For a grounding device in the house, in addition to such a strip, it is necessary to purchase a distribution power shield, a grounding electrode, wires and electrical appliances.
In addition, the metal strip may notused for grounding, if for safety in the house there are natural earthing switches: water pipes, building frames (from metal), but in case they come into contact with the ground, as well as well pipes. When using such natural earthing switches, it is necessary to output a special tap, namely to lay a grounding special wire from the structure to the bus of the electrical board. The tap is connected by bolts or welding.
For the earthing device it is first necessarydig a trench that will run from the object to the location of the special contour. On the site of this contour, the trench will take the form of a triangle, on each vertex of which it is necessary to drill the wells to a depth of three meters. Then a strip of stainless steel or zinc coated is laid, and steel rods are clogged. Then the entire structure is covered with a layer of excavated soil, in which there should be no debris and rubble. To reduce the resistance of the circuit, it is additionally connected to a metal fence or supports. The welding places are covered with bituminous varnish in order to avoid corrosion.
And the last, if from an overhead lineelectricity transmission to the house carried a three-phase electricity, then not only the grounding strip is used, but also an additional protection means - a zero conductor at the input to the power shield. This device is necessarily connected to the ground loop. It is very convenient and economical in terms of money to make a contour at the stage of laying the foundation or drainage system.
