In order to safety from electric shock, all modern electrical household devices must be connected to a network on a three-wire line. To do this, the house sockets should be with a grounded contact. If the ground contour in the house is not initially, it must be organized. This can be done even with your own hands, if you take into account the several required recommendations set out below.
1
The grounding circuit consists of several vertical electrodes blown into the ground to a depth of 2.5-3 m. First of all, dig a groove with a width of 40-50 cm and a depth of about 80 cm. The groove can be both rectilinear and in the form of an equilateral triangle. The minimum distance from the foundation of the house is 1 m.
2
Next, drive vertical electrodes to a depth of at least 2.5 meters in the groove and in the number of three pieces. With a linear arrangement of the electrodes between them - 2 m, with a triangular - along the vertices of the triangle. As electrodes, use steel corner with a cross section of 50 * 50 mm. To facilitate the work of the lower edge of the electrode, sharpen on the "wedge".
3
Vertical electrical electrodes secure each other - to provide electrical contact. For these purposes, take the steel strip with a cross section of 40 * 4 mm. Strip weld with electric welding to the side shelf of the corner. In no case do not use fasteners with rivets or bolted connection. After welding, the metal first cover the rust converter, then paint, and then treat the anti-corrosion composition. Now fall asleep the ditch. Before its backfill, make a "sand pillow" to the top edge of the electrode. Sweep the sand with a solution of cook salt - it will improve the electrical conductivity. Cutting the full volume of the extracted soil - for the next season, the "hump" land will fall to the desired level.
4
It is also necessary to connect the ground contour with switchgear. To do this, to the ground ribbon, weld steel wire with a cross section of 8-10 mm square. To its end, entering into electrical panel, weld the M8-M10 bolt - for fastening the shield grounding bus. If you can enter directly into the shield itself of the ground ribbon, then you can do without wire. This method is even more preferable, as it allows to reduce the resistance of the ground loop.
So that is all. Now you and your family are reliably protected from the voltage breakdown on the household body in emergency situations.
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