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Lightning protection project Lightning protection project is one of the steps for quality and correct execution complex of works on lightning protection of buildings and structures. This type documentation requires correct and meticulous calculation and execution for the safety of the building as a whole. Of course, for the...
Measuring the resistance of the grounding loop Measuring the resistance of the grounding loop is one of the components of the entire complex of works on organizing a lightning protection and grounding system. Our company carries out measurements of ground loop resistance in Moscow and the Moscow region with on-site...
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Active lightning rod Gromostar 25 (protection radius 25 meters)
Active lightning rod Gromostar 25 (protection radius 25 meters). The new technology company Gromostar, Gromostar, develops active lightning rods using its own technology and has significant success both in the Russian and European markets. This lightning rod has its own successful design and has proven itself as high-quality and proven equipment. Easy to install and has a thread for mounting on an M16 mast. This company has its own laboratory for conducting tests and is also quite popular all over the world. All products of this Gromostar company have patents for all products and also all quality certificates and warranties. This type of product has proven itself quite widely in the field of private and industrial construction due to its affordable price and ongoing technical support. Based on the installation height of the lightning rod, you can achieve greater safety results from lightning damage to your structure. This concept allows for significant savings on installation work and significantly speeds up the execution of all lightning protection installation work. If necessary, you can equip your lightning rod with a lightning strike counter, which will additionally allow you to monitor the health of the equipment. Our specialists will promptly and free of charge, according to your project, help you calculate and recommend the necessary model suitable for your building and will also be happy to select all the necessary components for installing the entire system and carry out everything necessary recommendations on installation. Also, by contacting us, we can provide you with everything optional equipment For quality work the entire building or structure. Gromostar provides comprehensive technical support and assistance to all clients, both with advice and additional equipment in the field of security of buildings and structures.
Below are special tables for studying the radius of the lightning rod depending on the height. In any case, we recommend that you contact our specialist for quality advice and the right choice relevant equipment.
Gromostar 25 m Can be supplied in either steel or a special copper alloy.
Specifications
Protection zones of the Gromostar 25 active lightning rod, for various protection categories and height H
(in accordance with EN62305-2 NFC 17-102)ΔT [μs]
H 2 m
H 3 m
H 4 m
H 5 m
H 7 m
H 10 m
H 20 m
25 I 17 25 34 42 43 44 45 25 II 20 29 40 50 50 52 55 25 III 23 34 46 58 58 63 65 25 IV 26 39 50 66 66 69 75
This type of product is unique and comes with an original warranty card and, at the customer’s request, can also be equipped with all technical documentation on installation. If necessary, our specialists will carry out professional installation on site and can also take measurements resistivity the entire system with the execution of a work certificate and warranty obligations. If necessary, our company can equip your entire facility with all the necessary additional materials for the entire cycle of work on lightning protection of buildings and structures.Active lightning rod SCHIRTEC S-AS (protection radius up to 30 meters)
Lightning rod SCHIRTEC S-AS (protection radius up to 30 meters)– designed for installation in buildings and structures for protection against lightning strikes and direct hits to the building. Made from high quality of stainless steel and has a special contact group for performance testing. High quality is confirmed by ISO 9001:2008 and ISO 14001:2004 certificates. These active lightning rods can be installed on almost any structure. Installed on an air-termination mast, the recommended height for installation is 5-6 meters. It has a high protection radius and can be used for several buildings at the same time.Schirtec is an Austrian research company that also has several points for studying lightning protection systems, distinguished by the use of special alloys for the manufacture of systems, very high quality execution. Decent design and control systems, lightning strike counters and testers. They occupy a fairly large market segment in the field of lightning protection in private buildings. At this stage, in our opinion, they are the most in demand in the private construction segment on the Russian market.
Active lightning rod INDELEC PREVECTRON 3 S40 (protection radius up to 80 meters)
Active lightning rod INDELEC PREVECTRON 3 S40(protection radius up to 80 meters), depending on the height of the mast.The latest generation lightning rod is distinguished by its special quality and modular system manufacturing, is one of the best in the world and has a full set of certificates from all international systems, and also has a certificate from RosTechNadzor (certificate RRS 00-05003). This certificate allows you to use this equipment at any facility with increased security and any protection class; these types of lightning rods are the only ones in Russia with such an issued certificate. Special alloys, special quality control, and complete control over production make this product truly unique. The lightning rod can be used both in industrial systems and in private buildings. It has additional equipment for use - a lightning strike counter and a special tester for checking. The company's specialists always provide technical support and installation advice. It is installed on the mast depending on the calculation and has a direct connection to the conductor.
Prevectron Indelec is a company that can safely be called a leader in the development of lightning protection systems for buildings and structures, France, has several special laboratories around the world and conducts high-quality experiments in this area. The developments of this company are in great demand all over the world. These lightning rods are installed on all the best buildings in the world, improvements are constantly being made and this type of product has the highest level of quality. New design, the use of the best modern technologies gives this product the highest quality rating.
Specifications:
Efficiency - ΔT 40 μs (advanced when triggered)
Standard. Deviation ACT/PAS σ σPDA< 0,65 σPTS
Withstand lightning strike -(wave 10/350μs) Iimp 100kA (regulatory test)
Max. shock withstand - Imax 207 kA (Unicamp)
Net weight P 3 kg
Principle of operation
Downward Leader Detection - Continuous Electrical Field Measurement(ΔE/Δt)
Conditions for the development of ascendant streamer - Optimax® - patented technology
optimizing the conditions for streamer development -Trigger Sparking due to impulsehigh voltage
Internal circuit - 3 independent synchronized modules
Center tip - Continuous electrical conductivity315 mm² sections – nickel-plated copper
Metal body Stainless steel steel 316, electronic magnetic shielding
Performance Testing - Special Tester
Maintenance - Replaceable modules
Warranty period - 5 years
Mechanical characteristics
Mast mount - M20 thread
Connection to down conductor - Special connector included
Package
Dimensions - 438 x 228 x 220 mm
Accessories included: Down conductor connector, hex key
Weight - gross 4.75 kg
Material - 100% recyclable
Certification
NF C 17 102:2011, Annex C Certificate Bureau Veritas N°6275241/2/1/3
Qualifoudre Certificate Ineris N° N°051166662001
One of latest achievements in this area, active lightning protection can be considered. It is a system using active lightning rods. Such protection is much more economical and does not require special care. At the same time, buildings and structures retain their presentable appearance, and do not turn into an object covered with many wires.
One of the modern representatives of lightning protection systems is an active lightning rod, which has a number of advantages.
- Firstly, it charges itself from its surroundings electric field, which means there is no need for an external power source.
- Secondly, it has a fairly simple design. To protect an object from lightning strikes, it is enough to install a lightning rod, rather than entangling the building with networks of wires. In Moscow, this fact is especially important for buildings of architectural value. In addition, the likelihood of damage to the lightning rod by snow or ice is minimized, which means you will not have to pay for constant repairs and maintenance.
- Thirdly, active lightning protection applies not only to the object itself, but also to surrounding buildings. The radius of action depends on what type and at what height the head is installed on the active lightning rod.
Passive lightning rods are one of the most common materials in lightning protection. Their classification consists of height and thickness and also some design features
Lightning protection of buildings and structures is an important element of ensuring the safety of administrative, industrial and residential buildings. A negligent attitude to this issue can lead not only to serious damage to property, fires, failure of expensive electrical appliances, but also cause colossal harm to human health. This is also evidenced by statistics from the Ministry of Emergency Situations: about 30% of fires occur due to lightning strikes. Despite this, practice shows that many buildings and structures in Moscow do not have sufficiently reliable protection against such a serious natural phenomenon as lightning. Some of the complexity comes from the fact that lightning cannot be predicted or prevented. But this should not become a reason for inaction. Modern science offers current solutions. In a certain area, lightning can be controlled using special equipment, preventing destructive consequences.
Following regulatory documents, where the requirements for lightning protection of buildings and structures are specified, elementary lightning rods and grounding are most often designed and installed, which can fully guarantee safety.
Designing lightning protection is a serious job that must be performed by specialists. There is a certain set of parameters that can affect efficiency. They should be taken into account when designing. First of all, this is the height of buildings, roof structure, view building materials And throughput soils. To ensure reliable protection of buildings and structures, this data is analyzed and the optimal solution is proposed.
Today there are two types of lightning protection:
- Active lightning protection. This operation is ensured by active lightning rods, which are capable of generating high-voltage pulses, creating an artificial leader. It captures lightning at a great distance from the object and directs it to the ground, providing reliable protection.
- Passive lightning protection. This is a traditional type, which involves a direct discharge into the lightning rods and its safe grounding.
Thus, lightning protection of a private home always provides protection and the choice of system is always yours or, better yet, specialists based on economic conditions.
Installation of lightning protection for a private house Lightning protection and installation price directly depend on the area of the house and the type of roof. Before starting installation, of course, a routine inspection of the roof is carried out and the installation location of the lightning rod is determined, as well as the location of the installation of conductors and fastenings for non..
Country houses are usually built from flammable materials, and the fire station is located far away. Yes, and you can’t drive up to every building, and you shouldn’t expect anything good from the strong wind that accompanies any thunderstorm.
Sometimes entire holiday villages burn out from a lightning strike.
We’ll tell you how to make an effective lightning rod on your own and eliminate the risk of a direct hit from a “heavenly discharge” into your house.
Where do lightning come from?
In a simplified way, the physics of the process can be described as follows: the source of lightning is cumulonimbus clouds.
During a thunderstorm, they turn into a kind of giant capacitors. On the upper plus part, a huge positively charged ion potential accumulates in the form of ice crystals, and in the lower minus area, negative electrons accumulate in the form of water drops.
During the discharge (breakdown) of this natural battery, lightning appears between the ground and the thundercloud - a huge electric spark discharge:
This discharge will always flow along the circuit of least local resistance to electric current. The fact is well known and verified. Such resistance usually occurs in high-rise buildings and trees. Most often, lightning strikes them.
DIY lightning rod
The idea of a lightning rod is to arrange an area of minimal resistance near the house so that the lightning discharge passes through it and not through the building.
If you don’t have a lightning rod at your dacha, it’s time to think about building one. The cheapest and easiest way to make it is to do it yourself. What do you need to know for this?
So, a lightning rod (lightning rod) is a lightning protection (lightning protection) device that ensures the safety of a building and the lives of people in it from the destructive effects that can occur during a thunderstorm when directly struck by lightning.
This is a corrosion-resistant, bare conductor - that is, a material that conducts electricity well and has the largest possible area and cross-section (minimum 50 mm²).
A lightning rod (lightning rod) is assembled from thick copper wire or steel wire rod, pipes of the required section, or from steel, aluminum, duralumin rods of various profiles, angles, strips, and so on.
It is better to use galvanized steel materials. Since they are less susceptible to air oxidation.
What does lightning protection consist of: device
A lightning rod (lightning rod) of the simplest design consists of 3 parts:
Lightning rod.
Down conductor (descent).
Ground electrode.
Let's talk about each element in more detail.
Lightning rod
An air terminal is a metal conductor mounted on the roof of a building or on a separate support (tower). Structurally, it is divided into three types: pin, cable and mesh.
When choosing a lightning rod design, be guided by the material with which the roof of the house is covered.
1. A pin (or rod) lightning rod device is a metal vertical rod rising above the house (see figure below).
Suitable for roofs made of any material, but it is still preferable for metal roofing. The height of the lightning rod should not exceed 2 meters. And it is attached either to a separate load-bearing support, or directly to the house itself.
Materials for production:
Steel pipe (20-25 mm in diameter, with a wall 2.5 mm thick). Its upper end is either flattened or welded into a cone. You can also make and weld a special needle-shaped plug to the upper edge of the pipe.
Steel wire (8-14 mm). Moreover, the down conductor must be exactly the same diameter.
Any steel profile(for example, angle or strip steel at least 4 mm thick and 25 mm wide).
The main condition for all these steel materials- cross-section minimum 50 mm².
2. Rope device lightning rod is a cable stretched along the ridge at a height of up to 0.5 m from the roof with minimum cross-section 35 mm² or wire.
Galvanized steel rope is usually used. This type of lightning rod is suitable for wooden or slate roofs.
It is fixed on two (1-2 meters) supports made of wood or metal, but insulators must be installed on the metal supports. The cable is connected to the down conductor using die clamps.
3. The mesh device of the lightning rod system is a 6-8 mm thick mesh laid over the roof. This design is the most difficult to implement. Suitable for tiled roofs.
4. Well, a lightning protection cover device is very rarely used - this is when the metal structural elements of the house itself (roof, trusses, roof fencing, drainpipe) act as lightning rods.
All considered designs of lightning rods are reliably connected by welding to a down conductor and through a down conductor to a single- or double-sided grounding conductor welded seam minimum 100 mm in length.
Down conductor
Down conductor (descent) - the middle part of the lightning rod, which is a metal conductor with a minimum cross-section for steel 50, for copper 16 and for aluminum 25 mm square.
The main purpose of the down conductor is to ensure the passage of discharge current from the lightning rod to the ground electrode.
The ideal path for the passage of electric current is the shortest straight line, directed straight down. Avoid turning at sharp angles when installing the lightning rod. This is fraught with the occurrence of a spark discharge between nearby sections of the down conductor, which will lead to inevitable ignition.
The most popular material for a current conductor is uninsulated steel wire rod or strip. It is carried out only on fireproof surfaces. Metal brackets should be installed on flammable walls, which themselves, being in contact with the flammable surface, will protect the down conductor.
Minimum distance from the wall to the down conductor 15-20 cm.
It is necessary to lay it so that there are no points of contact with such elements of the house as the porch, Entrance door, window, metal garage doors.
We know that it is better to connect parts of a lightning rod by welding, but if this is not possible, it is permissible to couple the down conductor with the grounding conductor and the lightning rod using three rivets or two bolts. The length of application of the current conductor to other parts of the system with a rivet connection is 150, and with a bolt connection - 120 mm.
The end of the non-galvanized wire rod and the place where the wire conductor is attached to the steel parts must be cleaned to ensure reliable contact, and the galvanized wire must be washed from dust and dirt. Then a loop or hook is made at the end of the wire, washers are placed on both sides and the whole thing is tightened as tightly as possible with a bolt.
The joints (if it is not welding) also need to be wrapped in several layers of electrical tape, then with a coarse cloth, twisted on top with a thick thread and covered with paint.
To improve contact, you can treat the ends of the wire with tin and solder them.
Ground electrode
Grounding electrode (grounding electrodes) - located in the ground, the lower part of the lightning rod, providing reliable contact down conductor with ground.
How to properly arrange grounding is described in GOSTs and SNIPs, but for the most simple option It is enough to bury a U-shaped structure made of metal conductors at least one meter from the edge of the foundation and no closer than 5 meters from the entrance to the building.
A conventional grounding loop (it is made for household electrical appliances) can cope with the task.
These are 3 electrodes driven and buried in the ground, connected to each other at the same distance by horizontal grounding conductors. The grounding structure should be buried below the maximum soil freezing level. From 0.5 to 0.8 meters deep.
For the ground electrode, rolled steel with a cross-section of 80 mm is used, less often copper with a cross-section of 50 mm square. Vertical grounding electrodes are 2-3 meters long, but the closer the groundwater level, the shorter they are.
If the soil at your dacha is constantly wet, then a meter or half meter pin will be enough.
To what depth to drive and how many electrodes will be needed can be found out at the energy service at your place of residence.
It must be remembered that the quality of grounding depends on the size of the contact area of the ground electrode with the soil and the resistivity of the soil itself.
A separate grounding conductor is needed for the lightning rod; you should not ground the lightning rod to a household circuit. We strongly advise against experimenting. It is fraught with consequences.
We invite you to watch the video from visual diagram installation of lightning protection:
According to regulatory documents, the installation of lightning protection systems is optional for private residential buildings. And only you can decide the feasibility of installing a lightning rod (lightning rod) at your dacha. We hope that the article will help you make the right decision.
bydom.ru
Protecting a private home from lightning - review of a good lightning rod
A reliable lightning rod in a summer cottage will not only protect a person from being struck by lightning, but also protect the house from fire, especially if it is made of wood. Consists of good system lightning protection consisting of a grounding conductor, down conductor and lightning rod. Next, we will tell Sam Elektrika readers about what all the elements of the system should be and how to make a lightning rod in a private house with your own hands!How the system works
First, let's figure out how lightning protection for a private home works and what is needed to create it. You can clearly see all the components of the system in this diagram:
As you already understood, the metal rods on the roof are lightning rods that discharge a dangerous discharge to the ground through a down conductor and special grounding.
There is an opinion that if a telephone tower is installed near the house, there is no need to install a lightning rod in a private house. This is wrong, because... It’s better to spend a little time and ensure yourself complete protection from lightning strikes. So that you know what a lightning rod should be like and how to make it correctly with your own hands, below we will separately consider the features of choosing each of the system elements.
Brief overview of lightning protection installation
Components of protection
Lightning rod
The main task is to choose the right lightning rod, which should provide complete protection country house in its coverage area. Today, a pin, mesh, cable, or the roof itself can act as a lightning receiver. Let's take a closer look at the features of using each option in a private home.
As for the pin, there are ready-made products from manufacturers that have a suitable shape and convenient fastening. As a rule, the metal used to make the lightning rod is copper, aluminum or steel. The most suitable and effective is the first option. In order for the receiver to cope well with its task, its cross-section must be at least 35 mm2 (if copper) or 70 mm2 (steel rod). As for the length of the rod, in domestic conditions it is recommended to use receivers with a length of 0.5 to 2 meters. The pins are convenient to use to make a lightning rod on a garden house, bathhouse or other small building. 
Metal grid can also be sold in already finished form. As a rule, a mesh lightning rod is a cellular frame made of reinforcement, 6 mm thick. The cell size can range from 3 to 12 meters. Most often, this type of lightning protection is used in apartment buildings and large buildings, for example, shopping centers. 
The cable is more practical at home and does the job better than the mesh. To make a lightning rod in a private house using a cable, you need to stretch it along the roof (along the ridge) by wooden blocks, as shown in the photo below. Minimum diameter cable for lightning protection of a building should be 5 mm. As a rule, this option is used if you want to make a lightning rod on a house with your own hands. slate roof.
Well, the last option - the roof as a receiver, can be used if the roof of a residential building is covered with corrugated sheets, metal tiles or other metal roofing material. With this type of lightning rod, two important requirements are imposed on the roof. Firstly, the thickness of the metal must be at least 0.4 mm. Secondly, there should be no flammable materials under the roof. You can make a lightning rod in a private house with a metal roof much faster and at the same time save on the purchase of special lightning rods.
Please note that if you use a mesh, it must be installed at a height of at least 15 cm above the roof itself!
Down conductor
A 6-mm wire made of copper, steel or aluminum is used as a down conductor for a private house. The wire must be connected to the lightning rod and the grounding system with bolts or welding. 
The only, but very important requirement for a down conductor is that it must be isolated from the environment and pass to the ground along the shortest path. As for insulation, at dachas and country houses The use of ordinary cable channels is popular, which are also used if you need to make open wiring in the house with your own hands
Ground electrode
Well, the last element of the lightning rod is the grounding circuit. In order not to make the material too voluminous, we have dedicated a separate article to this issue - how to make grounding in a private house. We recommend that you read the information so that you know all the intricacies of this stage.
In short, we can say that the grounding loop should be located next to the house, but not in the walking part of the site, but, on the contrary, closer to the fence. The charge is discharged to the ground metal rods, buried in the soil to a depth of 0.8 meters. It is better to place all the rods according to the triangle pattern, which is exactly what is shown in the photo: 
So, we have become familiar with the constituent elements of lightning protection on the roof, now we will look at how to properly make a lightning rod with your own hands.
Reliable lightning rod in the country - video tutorial on how to create
Manufacturing instructions
To make it clearer to you how to assemble the lightning rod system of a private house into a single whole, we provide step by step instructions with photo examples:
Video instructions for assembling lightning protection by professionals
That's the whole technology for creating a lightning protection system. As you can see, making a lightning rod in a private house with your own hands is not at all difficult, the main thing is to carry out the calculation work correctly. We recommend that you watch the video instructions, in which all stages of lightning rod installation are discussed in more detail.
Related materials:
samelectrik.ru
Lightning rod at the dacha. We make lightning protection with our own hands.
There is a widespread belief that a wooden house does not need protection from lightning. They say that wood is not a conductor, on the contrary, it is a dielectric, and the height of the roof is small, so a lightning rod is not needed at the dacha. This kind of misconception is literally deadly, since lightning in dry weather is as rare a phenomenon as ball lightning. But in a thunderstorm, when it pours like buckets, the conductor of electricity is not wood at all, but water, which is dangerous to life if classified as a dielectric.
These photos show the consequences of a rare phenomenon - a name for which we do not know. There was just a strong thunderstorm, and, despite the fact that the house is equipped with lightning protection, it was not it that acted as the discharge receiving circuit, but the perimeter of the roof drain (it is metal). All the machines turned off, but while this was happening, the author managed to take several photos. This is a TV with a satellite dish, which is at a height of 2.3 m from the ground on the wall, and seems to be completely unaffected by lightning.
First the lightning introduced itself and showed itself, 
after which it played with the TV picture. 
After that, the picture disappeared, but the receiver was still alive, having switched to factory settings mode. 
After which the house was completely de-energized, and how the matter would have ended remains a mystery. The photos were taken on a mobile phone, so as you understand, the process was not instantaneous. Take it out, turn it on, take a picture, etc.
The receiver had to be repaired - it burned out, at the same time the regular antenna (meter range) was damaged, and the spillway was burned in two places. Three burned out LED bulbs. All incandescent lamps survived. There was no fire, and no damage to the electrical wiring, thanks to the correct grounding connection and lightning rod. So a lightning rod is needed at the dacha, since we still know too little about lightning.
This was the preamble, and now about what and how you can do with your own hands to avoid such cataclysms.
A little theory about the practice of lightning protection
We pride ourselves on our practical knowledge of electricity, but we do not believe that scientists have yet understood what lightning is - that is, the spontaneous discharge of atmospheric electricity. We also don’t believe in the idea that electricity is generated by clouds that “rub against each other.” But we know that there are practical methods of protection, and they have long proven their effectiveness. Let us focus on this aspect, taking it as theoretical model a couple of laws of thermodynamics, and also reading about discharge in a saturated gas environment.
In this model, the discharge will occur between the point of maximum potential (somewhere in the clouds) and the nearest point of minimum potential. Note that this is exactly what happens in the vast majority of practical cases. Therefore, we accept as the correct model of a lightning rod in a dacha a conditional point above the roof, which, being the top of a speculative hemisphere, will cover the entire house.
The radius of this hemisphere is not determined by the height country lightning rod, but the amount of potential that he is able to accept and give to the Earth (the potential of which is relatively infinite). In fact, the radius of such a hemisphere is the depth of the grounding, and we just need to understand how to choose materials in order to move on to the task of making lightning protection with our own hands at the dacha.
Preparatory work for the installation of a lightning rod
The preamble talks about what can happen in a private house that is equipped with a lightning rod if two mistakes are made. The first is that the lightning rod receiver is next to the antenna, perhaps this had its effect. The second, more serious mistake was the constant cross-section of the lightning rod channel along its entire length. Simply put, from the metal strip of the receiver to the ground itself there is exactly the same strip. Throughout the entire height.
The lightning receiver can be thin, its task is to cast a fishing rod and wait for a bite. But the lower and closer to the ground the discharge line, the “thicker” it should become. A very thick conductor must be buried in the Earth. That is, we go from the roof to the ground, increasing the cross-section of the lightning rod.
So, we do lightning protection with our own hands at the dacha, without resorting to the help of specialists.
- We determine the height and configuration of the roof, mentally covering it with a hemisphere from the top point of the lightning rod, which we make at our dacha.
- The radius of the hemisphere is defined as a section of 5 sq. mm. per 1 meter height. That is, a lightning rod in a dacha 12 meters high (for square house) must have a cross section of 12 x 5 = 60 sq. mm. This is a 1 cm strip of 6 mm thickness. Let us clarify that this is the minimum permissible value for the point at which the receiver pipe will be welded to the discharge outlet channel. That is, the lower this tape goes, the thicker it should be.
- We determine the attachment point of the lightning receiver pipe. The chimney is not the best option– it is better to fix the pole on the wall, slightly increasing the height, than to allow a powerful discharge to hit the center of the roof. We dig a hole for grounding, most often triangular in shape, as for grounding.
- We evaluate the height of the pole, the depth of the pit and the cross-section of the metal in the pit according to the principle - the larger the better, but without fanaticism. If you make the pole too high and very good pit with grounding, then your dacha will collect all the lightning in the area using its lightning rod. Add 10 percent on top - that will be enough.
Don't drive several reinforcement bars into the ground! We dig a hole, weld several metal rods together, make sure the weld is strong, cover the welding areas with protective compounds and then bury the hole.
Having finished preparatory work, we make lightning protection with our own hands:
- We attach a metal rod to the pole. It is advisable to install a fan at the end (an old metal brush will do);
- Using screw connections, after thoroughly cleaning the contact points, we connect the tape and the lightning rod;
- We will make sure that both the lightning rod and the tape do not have contact with the roof - if necessary, we install insulators (they cost pennies and are screwed with ordinary self-tapping screws);
- We lower the tape along the wall to ground level and weld it to the ground loop. We cover the welding area with protective compounds;
- We check that the outlet tape is not connected to the wall, check the insulators, connections and dig a hole with grounding;
- In no case are we trying to save money by hanging the electrical wiring ground on the same grounding!
Our lightning rod at the dacha is ready. It remains to wait for the cataclysm to test it in action.
Some nuances of arranging a lightning rod at the dacha
For some reason, iron rusts, especially in the ground. Cover ground protective composition It’s possible, but it’s better to take a thicker piece of iron. A 120x120 corner with a thickness of 12 will rust in the ground for 40 years without losing conductivity relative to the entire lightning protection circuit.
Additional impregnation with fire retardant compound wooden walls along the entire lightning rod line will be a very useful and useful means of fire protection.
Before choosing a specific location for a lightning rod pole in your dacha, walk around and look at the tall trees and buildings around. The correct location will be where it is furthest from the nearest highest points. Exactly the farthest!
The whole complex of work can be done in a day, maximum two. This is not the most difficult task, it does not even require special knowledge. But it requires scrupulousness and thoroughness, so do it yourself without involving mercenaries. You want to protect yourself, and not receive assurances that you are protected.
obelektrike.ru
Do-it-yourself lightning protection of a private house: materials, diagram, instructions
House and cottage Gardener's calendar June House and buildings Do it yourselfLightning strikes on unprotected private houses and trees, unfortunately, are not uncommon. Having lightning protection at your dacha is necessary - it will divert the discharge into the ground and help save your property, and sometimes even your life. We will tell you how you can make a lightning rod with your own hands, using improvised means and tools.
How to protect against lightning a private house The lightning rod can be:
- Rod - a metal pin fixed to a frame (on the roof, near the house, on a tall tree growing near the house). The pin is connected to the grounding system using a metal wire. This lightning rod looks aesthetically pleasing, but its coverage area is not large. It is easy for them to calculate the protection area: from the highest point of the pin, you need to mentally draw a line to the ground at an angle of 45º. Everything that ends up in the perimeter triangle area is protected from lightning strikes.
Installation of rod lightning protection - Cable - its peculiarity consists of several masts (two or four), connected to each other by steel or aluminum wire. This lightning rod is more effective and covers a larger area with protection.
Cable lightning rod on the roof of a private house These two types of lightning rods are the most common and are used in private homes and dachas, since their design is simple and installation is not difficult to do with your own hands.
Lightning protection elements
Any type of lightning rod system consists of three mandatory elements:
- Lightning rod. In a rod lightning rod, this is a pin fixed above the chimney at least 1 m; in a cable lightning rod, it is a wire connecting the masts on the roof. Metal roof can also act as a lightning rod if the coating thickness is 4-7 mm.
- Down conductor is one of the main elements of lightning protection. It consists of copper (d 16 mm²), aluminum (d 25 mm²) or steel (d 50 mm²) wire.
- Grounding is a system of metal rods connected to each other by conductive material. It is located underground at a depth of at least 80 cm.
Materials and tools
To build lightning protection with your own hands you will need:
- The lightning rod is a pointed pin. A television mast or radio antenna can be used, you can also buy an air termination rod from one of the leading manufacturers: SCHIRTEC, OBO Bettermann, J Propste, GALMAR;
- Copper, aluminum or steel wire of the recommended cross-section;
- Pins, pipes or metal strips for grounding;
- Mast (frame);
- Plastic fastenings;
- Tools (hammer, drill, shovel).
Installation of cable lightning rod
At the first stage of lightning protection installation, it is necessary to stretch a wire along the roof ridges, which will serve as a lightning rod.
Installation diagram of cable lightning rod If the roof is covered with flammable materials (wood, plastic tiles), the wire should be located at a distance of 10-15 cm from the surface on special plastic fasteners. The ends of the wire are attached to metal masts (horizontal lightning rods), or bent vertically.
Installation and fastening of lightning rod The down conductor is attached to the lightning rod by welding, bolts or rivets. The connection points are isolated. On the roof the down conductor is fixed with brackets, on the walls of the house - plastic fasteners. The wire can be placed in the cable channel to avoid negative influence atmospheric phenomena on it.
Down conductor from the roof of a private house The grounding system is installed at a distance of at least 5 m from the house, paths, benches. There should be no areas for children to play or for animals to walk nearby. Grounding only works in moist soil, which must also be taken into account when choosing a location.
The procedure for installing lightning protection grounding is:
- Dig a trench to a depth where the soil is always damp (at least 80 cm)
- Drive metal pins into the bottom of the trench.
Ground loop for lightning protection - Connect the pins together with a steel strip or pipe by welding.
- Extend the grounding with a steel tape to the point where it connects to the down conductor.
- Connect the down conductor to ground.
Attaching the down conductor to grounding Installation of rod lightning rod
A rod lightning rod requires installation of a high frame. Its role can be played by a television antenna mast. The lightning rod is attached to the mast by welding or bolts.
Scheme of a lightning rod in a private house The installation of the down conductor and grounding of such lightning protection does not differ from that described above. After completing the work, it is necessary to check the resistance of the entire system. It should not exceed 10 ohms.
Service
Preventative maintenance of a lightning rod includes periodic cleaning of the rod pin from dirt, dust and oxide, as well as checking the integrity of all connections.
It is not difficult to install a lightning rod at your dacha yourself. If you follow all the recommendations and standards of the instructions for the installation of lightning protection RD 34.21.122-87, then at the right time it will work flawlessly.
Despite the fact that it is easy to make a lightning rod with your own hands, it is recommended to contact specialists to perform such work. Only professionals will be able to suggest which materials are best to use specifically in your situation, provide qualified assistance in choosing the right location for installation, and take into account the negative factors from which the protection may not work.
How to decorate a stump in the country with your own hands
Avoiding the tragic consequences of lightning is not only possible, but also very easy. Multi-storey urban buildings, as a rule, are equipped with lightning protection at the construction stage. But for owners of private housing, country houses and dachas, it is important to understand that no one will take better care of the safety of their property and life than they themselves. A lightning rod, or more precisely, a lightning rod, is a metal structure for attracting and trapping electrical discharge lightning. It has a rather unassuming design, but is very effective during bad weather. Precisely because it will not take a lot of money, time and effort to install, it is important to make a lightning rod in a private house with your own hands. Serve like this homemade design will be trouble-free, which has been repeatedly tested in practice.
Consequences of lightning strikes.
Thunder and lightning or why a lightning rod is needed
In the mid-latitudes of the European continent, May Day marks the beginning of a season when rain may be accompanied by thunderstorms. Most people are afraid of thunder and lightning flashes. And not without reason. Statistics inexorably show that dozens of people die from lightning strikes in the country every year, and fires in private buildings due to lightning discharges and sparks occur even more often.
A lightning rod in a private house is relevant both for owners of country cottages and for those who like to spend time in the country. Due to the peculiarities of electrostatics, in recent decades the probability of being hit by an electrical impulse during a thunderstorm has increased significantly. The reason for this is the abundance of electrical appliances and electrical equipment in homes that use air channels to exchange information. In addition, as you know, lightning is more likely to strike metal objects, if they are nearby, than trees. In modern housing there are a lot of metal objects: a metal roof, an antenna, a protective cone of a chimney, etc. Of course, wooden buildings need more protection from lightning, but even if they get into brick house, the listed facts will be enough to cause a fire.
Here are several factors that can influence the decision whether or not to install a lightning rod in a private home:
- soil composition;
- height of the site above sea level;
- climatological characteristics of the area (frequency of thunderstorms, air humidity, etc.).
Although in general, the feasibility of installing a lightning rod in a private house is beyond doubt. If possible, it is better to provide your home and site with the necessary protection.
How does a lightning rod protective system work?
The lightning rod (lightning rod) structurally consists of three parts:
- lightning rod - a high-rise metal structure above the house (rod, cable or mesh version);
- support for the lightning rod, sometimes necessary in cases where the lightning rod is installed not on the roof of the building, but separately on the site;
- down conductor (lowering) – conductor from the lightning rod to grounding;
- grounding - a device for draining a lightning discharge into the ground.
Anyone can understand how a lightning rod works: a lightning rod made of metal, which is installed on an area higher than other buildings and elements, during bad weather “causes” lightning discharges of electricity and, along the down conductor, redirects them into the thickness of the soil through the grounding circuit. The action of any lightning rod has a cone-shaped character, limited by area and height. In practice it is called the cone of safety. The geometric parameters of this volumetric figure are individual for each area and lightning rod under consideration.
Three types of lightning rod designs are known and allowed for installation:
- rod (pin);
- linear (cable);
- mesh.
Designs of lightning rods
Rod protection
Rod protection is a lightning rod made of a metal rod (tube, angle or rectangular profile) and installed on the roof of a dwelling or on free-standing mast. Suitable for any metal roof. Fig 3.
Linear (cable) lightning rod
For low buildings with slate or wood roofs, a linear lightning rod is recommended - a cable with a cross-section of at least 0.5 cm stretched along the ridge of the roof, connected to grounding at each end. It is mounted on wooden supports at a height of at least 0.5 m above the roof ridge. In this case, the down conductors run along the walls of the house, in protective pipes. If the support masts are located correctly, then lightning electricity will go into the soil beyond the boundaries of the protected area. Fig 1.
Mesh lightning rod
Such protective structure It is made in the form of a mesh of metal rods and laid on top of the roof of the house being protected. Its nodes are fixed by welding. It is fixed on special holders or laid directly on the roof, if the increase in temperature does not pose a danger to the roofing material.
When making a lightning rod from a mesh, down conductors are made along its entire perimeter. The grounding conductor in this case is a closed horizontal circuit with reinforcement at the points where down conductors are connected. Fig 2.
DIY lightning rod
Choosing an installation location
Before directly approaching the question of how to make a lightning rod in a country house, you should choose a place to install it. One option could be the roof of the building. It is simple and does not require high support, 3-4 meters is enough. If there are elevations on the site that exceed the height of the roof ( tall tree, television antenna mast, weather vane, chimney pipe), then it would be reasonable and convenient to place the lightning rod there, taking care of its reliable fixation. It is important to ensure that the entire house falls within the protected cone.
But if for some reason the above options do not suit you, then there is always the opportunity to install a lightning rod on a mast some distance from your home. Although this method is more labor-intensive, because a high, strong mast is required, and has nuances:
- the further from the building, the higher the mast is needed;
- The lightning rod should not create a danger to neighbors.
Equipment selection
Since this article is devoted to how to make a lightning rod in a private house, the most universal and budget option will be considered in more detail - arranging a rod lightning rod in a country house. This fully complies with the requirements of domestic standards in the field of electrical safety, in particular the manual to RD 34.21.122-87 “Instructions for the installation of lightning protection of buildings and structures”, which states that:
"…ToIII categories include small buildings in rural areas, where combustible structures are most often used......their lightning protection is carried out using simplified methods that do not require significant material costs.”
Everything you might need to make a lightning rod can be purchased at regular store construction goods. To build a typical lightning rod, you will need:
- for an air terminal: a metal rod - steel, copper or aluminum with a cross-section of 50, 70 or 35 square millimeters, respectively.
- for down conductor: preferably copper cable, at least 16 square millimeters in diameter;
- for the mast: asbestos cement pipe (2-4 meters above the house);
- copper pins for grounding;
- fasteners.
Having everything you need at hand, you can begin installing the lightning rod.
Preparation for installation
When making a lightning rod with your own hands at the dacha, the owner of the dacha plot must understand that the issue of reliability and safety of the structure falls entirely on his shoulders. Therefore, already at the installation stage, he must take care of safety. What should be done:
- carefully consider and prepare the fastenings of the lightning rod parts. In the absence of reliable fixation, all high-rise elements can be blown away by the wind, which means that the building itself, cars parked near it, or injuries to residents may occur;
- smoke ducts located above the roof also require the installation of lightning rods. A chimney made of a ceramic pipe or brick inevitably loses its insulating properties during operation, which means it can easily transfer a lightning charge into a home. Stainless steel and similar chimneys require grounding;
- antennas (including satellite ones) must be connected to grounding, because they are connected to the electrical network and attract lightning very well.
Manufacturing instructions
Lightning rod installation
Installation of a lightning rod begins with digging a hole or trench 1-1.5 meters deep and 3 meters long for laying the ground electrode. The ground electrode should not pass near the house itself (porch, walls), or garden paths.
If during digging in the hole you find groundwater, then this is only a plus: moist soil is an excellent conductor, a lightning discharge will evenly flow into the soil.
Next, the lightning rod is secured to the top of the support or roof with metal clamps. The next step is to attach a down conductor cable to the existing structure, which will run in an asbestos cement pipe.
The lower end of the cable is pinched with contacts or welded to a grounding electrode. Then the grounding circuit is buried (driven) into the soil and, tamping well, is covered with earth.
Important! The lightning rod should not have decorative covering(coloring), because it can significantly worsen its conductive function!
Design calculation
In order to mount a lightning rod with your own hands, you need a simple calculation. There is a formula for this:
h=(r x +1.63h x)/1.5
In it, h is the height of the lightning rod,
h x – height of the house,
r x – radius of the base of the protection cone,
1.63 and 1.5 – calculated coefficients.
That is, if it were necessary to protect country cottage area with a radius of 10 meters, having in its center a house 5 meters high, on the roof of which a lightning rod is installed, then by substituting these numbers into the formula, you can get the result:
h=(10+1.63×5)/1.5 = 12.1 meters.
When making calculations, you must take into account that all buildings on the site must fall within the radius of the lightning rod, and correctly calculate the height.
Owners of private residential buildings are constantly wondering about providing their property with various types of protection, including from lightning. The need to erect an absorbing device is usually dictated by the climate in a certain region, and if a particular area experiences high levels of precipitation with thunderstorms, then installing a lightning rod is considered advisable. Since purchasing and installing this device can be quite expensive, it is better to do it yourself.
The choice of the type of planned lightning protection should take place not when the construction of a private residential building has already been completed, but at the project development stage. This will allow you to make the absorbing device according to all the rules, as well as subsequently save time and financial resources. The principle of operation of a lightning rod is that a powerful electric charge that hits the receiver is sent to the ground for extinguishing, protecting structures from destruction.
If a private house is located in an open area far from neighboring structures, if it is located on a hill, or if there is even a small body of water nearby, then a lightning rod must be installed. At the same time, the device itself must be reliable, taking into account all factors that may affect the absorption of a high electrical discharge. In this case, you can opt for a lightning rod tower. This type of lightning protection will have its highest point high enough to prevent lightning from striking the house itself. This type of device is more expensive, but there is no doubt about its reliability.
If the house is located near tall towers, buildings or near power lines, then this place is less susceptible to such natural influences. In this case, lightning protection can be done on the house with a special circuit and grounding under the house. Both types of structures can be made with your own hands. To do this, you need to obtain special knowledge about performing this type of work, purchase consumables for the construction of a lightning protection device, make a diagram of its location and grounding location.
When choosing the type of device to protect a building from lightning, you should take into account the type of soil on which the house stands. Different kinds soils have different conductivity of electricity, as well as levels of resistance. Depending on the soil resistance, the cross section is selected metal sheet for grounding and the size of the buried circuit. Also, the type of lightning protection will depend on the initial condition of the building. Typically, lightning strikes the highest point of the house or the nearest tall tree. Antennas, poles, trees serve as a shield during a lightning strike. In this case, people, cars or other objects may fall into this affected area.
Video “Pros and cons of a lightning rod”
How to do it yourself
A complete home protection system against high discharge consists of external and internal protection. The internal one is needed to prevent a sharp surge in voltage in the electrical network. A surge suppressor can work even if lightning strikes several kilometers from the house. External protection will ensure the safety of the residential building itself and the people in it. In order to make lightning protection with your own hands, you need to know that effective adaptation must consist of mandatory elements - lightning rod, down conductor, as well as a grounding loop. If necessary, you can use a support.
Lightning rod. This part is a regular metal rod. Its length can be from 25 cm to 1.5 meters. It is usually installed on the roof, forming the highest point on the house and surrounding area. Also, installation of the lightning rod can be done on chimney or on a television antenna. Any highest point of the building is suitable for attaching a metal rod. This method is suitable for houses with metal roofing. Suitable material is strip steel or 60 mm 2 at round section rod. When installing an air terminal with your own hands, you should know that it should only be placed in a vertical position.
If the roof is made of slate or fired tiles, then such a receiver can be made with your own hands from metal flexible cable 6-7 mm thick. It is stretched onto wooden supports 1.5-2 meters high and then protected with insulators.
Down conductor. This part of the lightning protection structure can be a thick wire of 5 mm in diameter. Galvanized steel is well suited for wire, as it has good characteristics. The down conductor is placed in the place where lightning is most likely to strike. For example, this could be the pediment of a private house. It should not be attached close to the wall, but at a distance of 15 to 20 centimeters. You need to be especially careful if the roof or other parts of the building are made of flammable materials. For fastening, you can use nails, clamps or staples.
Grounding. The last element of lightning protection is necessary to conduct a powerful electric charge into the ground. The choice of material should be made in favor of a metal that has good electrical conductivity with a low resistance value. The grounding is located at a distance of about 5 meters from the walls of the house or porch, no less. It is not recommended to install it near paths or other places where people may be. This place can be fenced off for greater security (at least 3 meters from the ground electrode).
Then you need to determine the depth to which the ground will be placed. This value is usually more individual than other indicators. This can be influenced by the type of soil, as well as the presence of groundwater in the area. Groundwater makes grounding more effective. In dry soil, grounding should be done to a depth of 2 to 4 meters. You can make 2 rods with your own hands, connect them with a wide jumper, and secure the workpiece by welding to the down conductor. Then bury the ground electrode into the ground.
In wet or peaty soil, grounding can be done at a depth of 80 cm.
The decision to build a separate tower to protect a building from lightning strikes is usually made if there is space for this on the territory and there are no such devices in the surrounding area. This method may be more expensive, but no less effective. It is also quite easy to understand the design.
Choosing a place for a lightning rod
Experts recommend erecting a lightning rod at a distance of several meters from the house. For example, the outskirts land plot. In this place it will not interfere, but will not lose its purpose. You should not place this type of lightning protection at a distance of more than 100 meters. A similar problem can be solved by cooperating with the owners of neighboring plots, since a lightning rod can provide lightning protection to several houses at the same time, or even a dozen at once.
The lightning rod must be placed so that its highest point rises above the houses by at least 2 meters. In this situation, there is a directly proportional relationship - the higher, the better. But in order not to attract extra charges, you should not make it too high.
Installing a tower
The materials for mounting the tower can be: metal corners, which can be welded together. If you make the design with your own hands, then it appearance– individual solution. The most important thing is that there is a void in the core where the grounding conductor will be placed.
Clamps for attaching copper and aluminum rods are welded to the lightning rod. They are then connected by a separate conductor, which will subsequently need to be connected to the ground loop. Then a hole 2-2.5 meters deep is dug and the tower itself is dug in. If the height of the house is about 5 meters, then the tower with the receiver rod should be at least 7 meters.
Grounding
When installing a tower, grounding is done in a slightly different way. On the ground you can draw a conventional equilateral triangle (side 1.2-1.5 m). At the corners of the triangle, vertical grounding conductors should enter the ground, the lower end should enter the ground 2.5 meters or deeper, and the upper end half a meter from the surface of the earth. Grounding electrodes can be made of reinforcement or copper rods with a flat surface (which is very expensive). Vertical grounding elements are connected to each other by horizontal ones underground. The tower itself is installed in the center of this triangle.
The last stage of installing a lightning rod in a private house is connecting the circuit to grounding. This point is very important. To prevent the conductor itself from oxidizing, it must be covered with corrugation. This will reduce the charge permeability. The receiver rod can be regularly cleaned with your own hands when signs of oxidation of its surface are noticeable.
People living in private houses are afraid of lightning striking their homes. Some of them, in order to protect themselves from this, are thinking about protecting the building. Their concern is understandable, since there are regions where lightning intensity can reach up to 80 hours a year. In such areas it is necessary to install lightning rods. The construction of such a structure naturally requires certain costs. However, in some cases they can be minimized if you do all the work on creating a lightning rod yourself.
Protection zone
Currently, structures that protect against lightning are distinguished based on the degree of reliability. There are two types:
- type A;
- type B.
Lightning rods of the first type provide 99% protection, which allows them to be called the most reliable designs against lightning. Structures of the second type provide 95% protection.
Device
If you are seriously afraid of lightning getting into your home and, in order to protect yourself from this, you have decided to install a lightning rod, then in this case, during work you will need to create the following elements of this building:
- lightning rod;
- down conductor;
- ground electrode.
Lightning rod
This is a device that looks like a metal rod. After installation, it will rise above the roof of the building. This is where lightning strikes will fall. Thus, it is ensured reliable protection buildings. In addition, such a device is able to withstand severe voltage loads that occur when struck by lightning. When creating this element, you can use various materials.
The best choice - strip or round steel, whose cross-sectional area is at least 60 square meters. m. This element is subject to certain requirements in terms of length. This parameter must be at least 20 cm. The device must be placed strictly in a vertical position. The tallest building on the site is the ideal place to anchor it.
Down conductor
The current conductor has the form of a thick wire with a diameter of 6 millimeters. To create it the best choice- Cink Steel. Regarding its location, it is better to choose areas where lightning is most likely to strike. For example, a good place to place it might be the edge of a gable. It can also be placed on the ridge. This lightning rod element is secured close to a private house, but with a slight offset of 20 cm.
If the house has a roof made of materials that are easily flammable, then in this case a gap is all the more necessary. To secure the down conductor special fasteners must be used: nails and staples. For greater reliability of fastening this element, you can use clamps.
Ground electrode
It is necessary to divert a current strike from lightning to the ground. When choosing a material to create this lightning rod element, it is necessary to use one that conducts electrical charge well. It is also necessary that the material has minimal resistance. If we talk about its location, then this lightning rod element is placed not far from the porch of a private house, at least 5 m. It is not recommended to install the ground electrode in the immediate vicinity of paths, as well as in places where people may be. After placing it, you can create a fence around it to make sure it doesn't cause harm.
When installing a fence from the ground electrode, it is necessary to make an indent of 4 meters, and the fence itself should be arranged along a radius. If the weather is good outside, it will not do any harm. But if it’s cloudy, and especially if a thunderstorm has begun, then standing in close proximity to it can be dangerous to your health. The ground electrode is installed in the ground. The decision regarding the depth of the depth of this element is made by the owner of the house himself. The following points must be taken into account:
- soil type;
- availability of groundwater.
For example, if the site is dominated by dry soil and the groundwater level is low, a ground electrode consisting of two rods is installed. The length of each of them should not exceed 3 meters. Components of this element must be secured to the jumper, whose cross-sectional area should be 100 square meters. m.
When this is done, the grounding conductor is secured to the down conductor by welding. After this, it is immersed in the ground to a depth of 0.5 meters. In the event that the soil on the site is peaty and has high humidity, and groundwater is located close to the surface, then there is no possibility of grounding half a meter. Therefore in this case metal corners must be used, which will act as a grounding conductor. They are immersed to a depth of 80 cm.
If a multi-storey building is being built, then in this case the work on installing a lightning rod is carried out by specialists. These structures have their own protection zone radius, which makes it possible to place them on every building. Before installing this structure, it is checked whether the already installed lightning rods are capable of providing lightning protection to the constructed building or whether it is necessary to construct a new one.
In the case of individual houses, the issue with the lightning rod is decided by the owner himself. There are a number of factors in the placement of buildings that can minimize the risk of lightning striking a house:
- if a house is located in the lowest place on the site, the probability of lightning striking it during a thunderstorm is small;
- if there is a building next to the dwelling high altitude, then when lightning strikes it is more likely to be hit by lightning. This way your home will be safe;
- If a lightning rod is installed on a neighboring house, then its protective zone may extend to your house. And in this case there is no great need for a lightning rod.
Thus, it cannot be said that a house that does not have a lightning rod is at high risk of being struck by lightning.
Options for creating a lightning rod
If you have inspected your and neighboring houses and as a result discovered that nearby buildings do not have such protection as a lightning rod, then in this case the most reasonable thing is to do the work to create it yourself. Particularly dangerous are buildings whose roofs are covered with metal tiles or steel sheets. Although such a roof looks attractive, the lack of grounding increases the risk of lightning striking such a house.
In most cases, installation of this roofing is made on a lathing made of wood. This ensures charge accumulation. Discharge of such a device can only occur after a thunderstorm. A person touching it can receive a current discharge of several thousand volts. In addition, do not forget that a spark may occur after a lightning strike, from which a wooden house can easily ignite.
If you want to avoid such unpleasant situations, then you need to think about grounding, which should be located every 20 cm. If your home has a metal roof, then in this case you can refuse to create a lightning rod. The roofing material itself will be an excellent lightning rod.
To save your home from lightning strikes, you can install a lightning rod on its roof. However, other options are also possible. If there is a tall tree next to your home, then you can install a lightning rod on it with your own hands, but provided that it is located at a distance of three meters from the building, and its height is 2.5 times greater than that of your house.
If you find this lightning rod option attractive and decide to arrange it, then you will need 5 mm wire. First you need to prepare it, then one end needs to be buried in the ground, having previously welded it to the ground electrode. The other end will act as a lightning rod. It must be placed at the very top of the tree.
If there is no tall tree on your site, you can use an air-termination mast with two metal rods instead. Their installation is carried out at opposite ends of the roof. The drain in this case will act as a down conductor. Great importance has the material of its manufacture. It must be metal. In this case, you should also not forget about the device of the grounding electrode.
Conclusion
Regardless of which method you choose to install the lightning rod, you must remember that by properly installing this structure, you will ensure comfortable living in your wooden house. But it is necessary to periodically check the condition of the lightning rod created with your own hands. Special attention must be paid to its connections. There should be no violations in them. Only in this case you can not be afraid of lightning striking your house.