Installation of lightning protection of the cottage and its options for different types of roofs

If you ask around friends who have cottages, there is in their homes any lightning protection means, then, certainly, the overwhelming majority of them answered negatively.The reason, most likely, is inherent in our people faith in the mighty Russian "maybe".And none of them does not think about what terrible consequences may occur in the event that this powerful celestial spark, which we usually call the lightning hit the house.At a cost implications of these quite comparable with the cost of materials and labor for installing lightning protection (lightning rod), pouring out, in fact, in the minimal amount.

Electric are

lightning Lightning, being an electric discharge, similar to that which occurs when punching in the wiring, is subject to all the laws that exist in the field of electricity.This powerful atmospheric discharge occurs in the place where the least resistance.The resistance is the smaller, the shorter the distance between the cloud that carries the electric potential and the object located on the surface of the earth.That is why often suffer from lightning strikes tall trees, poles, or at home.

We should not forget about the natural love of power to the metal, because that metal is the environment in which there are ideal conditions for the movement of an electric current.If this spark of celestial given a choice between wood and steel post, in any case, it will choose the latter.

operating principle of the lightning protection

operating principle, and indeed the lightning protection system, characterized by surprising simplicity.The objective of this system is to meet the flies to the roof of the house the zipper, to make it change direction and send the lightning into the ground.In accordance with this triple objective of lightning protection includes three components: air terminal, the collector and earthing.

Design lightning

To protect against lightning strikes the highest point of the roof must be installed with the help of wooden props round bar of steel of about 12 mm in diameter.As the rod can be used steel pipe, pre-brew or closed metal plug her butt.This rod is a lightning arrester, which is destined to take the first blow.Its length may range from 20 to 150 cm and the cross-sectional area should never be less than 1 cm2.

Lowering the collector with the roof, it is attached to the house wall with staples.Then it is dipped into the ground and carefully welded to a depth of about one and a half meters to advance mortgaged earth electrode, which can play the role of a sheet of steel or a metal pipe cut.If it is not possible to excavate laying earthing, you can use a metal bar, scoring in the earth to a depth of not less than two meters.

Such lightning protection design in general.However, for different types of roofs have their own peculiarities.

features lightning protection for any type of roof

metal roof .In this case, the installation is acceptable classic embodiment described above.Particular attention lightning protection installation, in any case should be paid to the fact that the collector should be fixed on the house wall, which is opposite to the input and earthing should be recessed at the greatest possible distance from the foundation of buildings and others available on the site.

Slate, wood and similar types roof.In this case, it is recommended to change the form of air terminal.For its arrangement along the ridge of the roof is necessary to pull a metal cable, installing it on two props.The remaining elements of the system remain unchanged.

tiled roof.Also in this case it is recommended to change the shape of a air terminal.It is made of steel mesh, the cells in which the step should not exceed 6 × 6 m. The grid should not be particularly common.

Thus, we see that the installation of lightning protection is not a complex and expensive undertaking.Her presence also provides the necessary level of protection to prevent huge losses that may be incurred by the landlord in the case of a direct hit by lightning in his cottage.