- 1 Grounding in a private home, the ground loop circuit
- 2 How to make ground in a private house, in the country
- 3 The contour of the ground in a private house with his own hands: schemes, calculations, installation
Grounding in a private home, the ground loop circuit
The basis of engineering networks in a private home is electricity. In order to safely use electricity in a private house requires grounding circuit, in a circuit which combines all appliances.
Ground loop, despite the simplicity of its devices, versatile and performs:
- Protect against electric shock when touching the faulty appliance.
earthing device in a private house
The device grounding circuit for the private home due to the rules of the EMP and is simple in the manufacturing process.
Comprising protective circuit directly 3-grounding electrodes dug into the ground and the metal being welded structure escaping bus for electricity.
Using several design of grounding electrodes due to the fact that one area is insufficient to create the necessary space for full protection and several electrodes interconnected in the region compensate.
As a material for the manufacture of ground according to the rules and regulations of the SAE allowed steel coated with different metals or tin-plated and zinc-copper.
Photos ground loop in a private home.
And then the article about the causes creaking parquet and address this shortcoming.
Ground loop for a private home. scheme
Height each ground electrode mounted in the ground according to the regulations must be scheme 2 - 3 meters. Placed electrodes in the ground on the basis of an isosceles triangle at a distance of at least 1.2 meters between them according to the rules of the SAE. As the binder member uses a metal plate, which is applied by welding to obtain a reliable connection between the contact electrodes.
Installation of ground in a private house with his own hands. Video
How to ground a private house? Grounding is in a private home enough easy to make your own hands. This will require metal corners 50x50 mm and a length of 2 to 3 meters and a metal plate measuring 40 x 4 mm.
In a selected area for installation We do the layout of an isosceles triangle with sides of 3m. Drawing on marked dig a trench depth of 70cm, and the corners are hammering the corners, which will include grounding electrodes.
After we join them together by welding the metal strip and with the same plate or a steel wire tightens tire grounding circuit to the home. In place of the distribution of the earthing circuit in the house do the bolted joint with flexible copper wire and distributes it to the electrical engineering. We fall asleep trench land and our grounding in the house ready.
The process of installing the protective grounding in a private home is a simple and does not require specialized skills, it is sufficient to adhere to the rules of the given scheme.
And this video is another way to make the ground connection for a private house in the kit.
Earthing systems for private homes. ground fault
The grounding system of the cottage before the commissioning, should be checked for serviceability. Testing of the system is performed by electric tester Measures resistance, or as it is called in simple language ohmmeter. For a detached house with a connection to the network 220 resistance must not exceed 30 ohms.
The ideal goal resistance index a value of zero, indicating that the full absorption of electricity underground. Since the ideal figure is virtually impossible to achieve, so the existing guidelines for the creation of electronic appliances. The resistivity is calculated based on the structural features of the earthing circuit, and has a standard value of 0.5, 1, 2, 4, 8, 10, 15, 30, 60 ohms.
And here about the installation of plastic windows with their hands.
See our website http://ru-house.net/. And you will learn a lot more informative, useful information.
The estimated cost of the ground in a private house
The estimated cost for the production of ground in the home is calculated based on the cost and the amount of material consumed in the installation, as well as the cost of work on the assembly and commissioning.
To take a standard calculating circuit:
- Cost 9 meters corner 50 x 50 (grounding electrode 3 by 3 meters);
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For lightning rods must be! SEPARATE mount circuit unbound. With protective ground loop! keep this in mind.
Very interesting post. All it sets out very clearly and I really liked your blog. I will wait for the new posts.
A wonderful and very useful article. All would be well =)
Good article that will help many people to protect themselves and their home. I would like to add that in a private home will not prevent the lightning rod, which also can be brought to the contour of the ground. From personal experience I would say that the area can clog and 1.5 meters. And indeed there is no need to call the lab to check your circuit at the end of the article says it can be done independently.
How to make ground in a private house, in the country
Operation of modern appliances and computer equipment without grounding it is fraught with failure. In large parts of the country, especially in rural areas, the old model of power system. They are a protective grounding is not provided, or they are in such a state that simply does not meet the electrical requirements. Because the owners have to do themselves grounded private house or villa.
Protective grounding is necessary to ensure electrical safety in the home. Correctly adapted current, occurrence of leakage, it leads to an immediate trip an RCD (insulation damage or contact with live parts). This - the main and the main task of this system.
The second function of the ground - to ensure the normal operation of electrical equipment. For some electrical wires in the presence of a protective outlet (if any) is not enough. You must be connected to the grounding rail directly. To this end, there is usually a special clip on the housing. If we talk about home appliances, it is microwave, oven and washing machine.
The main task of the ground - to ensure electrical parts of the house
Few people know, but the microwave oven without a direct connection to the "earth" during operation can substantially fonit, receiving radiation levels can be life-threatening. In some models, the rear wall can be seen a special terminal, although in the instructions usually only one phrase: "you must ground" without specifying exactly how it is desirable to make.
When touched with wet hands to the body of the washing machine is often felt tingling. It is not dangerous, but it is unpleasant. You can get rid of connecting the "land" directly on the body. This situation is similar with the oven. Even if it is not "nibbling", a direct connection is more secure, as the wiring inside the installation work in very difficult conditions.
the situation is even more interesting with the computer. By connecting directly to "ground" wire to the body, many times you can raise Internet speed and minimize the number of "lags". That's simply because of the direct connection to the grounding bus.
Do I need to ground in the country or in a wooden house
In suburban towns do grounding it is necessary. Especially if the house is made of combustible material - wood or brick. Case in thunderstorms. Dachas so many elements that attract lightning. It wells, wells, pipelines lying on the surface or buried to a minimum depth. All of these objects attract lightning.
Dachas high probability of lightning
If there is lightning protection and grounding, lightning hit nearly equivalent fire. Firehouse near there, so that the fire spread very quickly. Because a pair of grounding and lightning conductor do another - at least a couple of meters in length rods attached to the roof ridge and connected by means of steel wire to ground.
private house grounding system
All six systems, but in the individual building is used, basically, only two: TN-S-C and TT. In recent years, recommended system TN-S-C. In this scheme, neutral in the substation gluhozazemlena and equipment in direct contact with the ground. To the consumer earth (PE) and the neutral / zero (N) being a single conductor (PEN), and again divided into the entrance of a house two separate.
Earthing system TN-S-C
In such a system a sufficient degree of protection provided by automata (RCD not mandatory). Drawback - when burning-off or damaged wires PEN in the area between the house and the substation on the ground bus in the house phase voltage appears, which does not turn off. Because SEP imposes stringent requirements for such a line: should be mandatory mechanical protection of conductors PEN, and periodic back-ground on poles across the 200 m or 100 m.
However, many power lines in rural areas do not satisfy these conditions. In this case, it recommended to use TT system. Also, this scheme is to be used in stand-alone open economic annexes with a dirt floor. In them there is a risk at the same time to touch ground and the ground, which can be dangerous when the system TN-S-C.
private house earthing system TT
The difference is that the "ground" wire on the panel is on the individual ground loop, rather than from the transformer substation, as in the previous scheme. Such a system is resistant to damage the protective conductor, but require installation of RCD. Without them, the protection against electric shock, do not. Therefore, the EMP defines it only as a backup if the existing line does not meet the requirements of the TN-S-C system.
TT grounding system in a more understandable picture
The device is a private home ground
Some of the old power line does not have a protective earth. All they have to change, but when it happens - an open question. If you this is the case, you must make a separate circuit. Option two - grounding is in a private home or at the cottage on their own, with their own hands or to entrust the execution of the campaign. road service campaigns, but there is an important plus: If during operation there are problems caused by the improper functioning of the grounding system, indemnify campaign, which makes installation (should be spelled out in the contract, read carefully). In the case of self-fulfillment of all of you.
earthing device in a private house
The system consists of a private house of the ground:
- metal strips, they are united in one system;
- line from the ground loop to the switch board.
The pins can be used as a metal rod with a diameter of 16 mm or more. And you can not take the valve: the surface she Hardened that changes the current distribution. Also, red-hot layer in the earth is destroyed faster. Second Embodiment - metal angle with shelves 50 mm. These materials have the advantage that they can be soft ground to score a sledgehammer. To make this easier to do, one end sharpened, welded to the second platform on which is easier to beat.
The rods can be used as a pipe, a corner, a metal rod
Sometimes the use of metal pipes, one end of which is flattened (welded) into the cone. In their lower part (about half a meter from the edge) are drilled holes. When drying of the distribution of ground leakage current is significantly deteriorated, and such rods may be cast brine, restoring work grounding. Less of this method - you have to dig under every rod / drill wells - to hammer them with a sledgehammer to the desired depth will not work.
Pins-grounding should go into the ground below the freezing depth of at least 60-100 cm. In regions with dry summers, it is desirable that the pins are at least partially in the wet ground. Since corners are used mainly rod or 2-3 m in length. These dimensions provide sufficient contact area with the ground, creating normal conditions for dispersion leakage currents.
Work protective earthing is to scatter over a large area leakage currents. This happens due to the close contact of earth metal - pins and bands - with the ground. therefore ground elements never paint. This greatly reduces the current conductivity between the metal and the earth, the protection becomes ineffective. To prevent corrosion in the field of welding can be corrosion resistant composition but not paint.
The second important point: the earth must have little resistance, and this is very important good contact. It provides welding. All compounds boil, the weld quality must be high, without cracks, voids and other defects. Once again I draw your attention: grounded in a private house can not be made on the threaded connections. Over time, the metal is oxidized, destroyed, increases resistance to many times, protection worsens or does not work.
Use only welds
Very unwise to use as earthing pipelines or other metal structures that are in the earth. For a while, this grounding in a private home runs. But over time the pipe joints due to electrochemical corrosion, leakage currents activated, oxidize and break, grounding is inoperative as line. Because these types of earth is better not to use.
First deal with earthing form. The most common - in the form of an equilateral triangle whose vertices scored pins. There is a linear arrangement (the same three things, only in-line), and a loop - the pins are hammered around the house with a pitch of about 1 meter (for the area houses more than 100 square meters.). The pins are connected by metallic strips - metallosvyazyu.
The most popular model of the earthing
From the edge of the blind area of the house to the place of installation of the probe shall be not less than 1.5 meters. In a selected area digging a trench in the form of an equilateral triangle with a side of 3 m Depth of the trench 70 cm, width -. 50-60 cm - it was convenient to cook. One of the peaks is generally positioned closer to the house, the house is connected with the trench having a depth of at least 50 cm.
The triangle vertices are sacrificed pins (round bar or area of 3 m length). Above the bottom of the pit is left about 10 cm. Pay attention to the earthing lead out to the surface. It is located below ground level at 50-60 cm.
By projecting part of the rod / metallosvyaz welded parts - the strip 40 * 4 mm. Created earthing the house connect the metal strip (40 * 4 mm) or a circular guide (10-16 mm 2 section). Band created with metal triangle is also welded. When all is ready, the weld area is cleaned of slag cover anticorrosive (not paint).
After checking the earthing resistance (in general it should not exceed 4 Ohms), trenches covered with earth. The soil should not be large stones or building debris, compacted earth layers.
At the entrance to the house of the metal strip are welded by earthing bolt which is attached to a copper conductor insulation (traditionally coloring earthing conductors - with green yellow stripe) conductor section not less than 4 mm 2.
Ground output to a house wall with welded at the end of the bolt
The switchboard is connected to grounding special bus. Moreover, only in a special area, polished to a shine and grease. From this bus "ground" is connected to each line, which is bred in the house. And the layout of "ground" of individual conductors of the SAE is not allowed - only a part of the overall cable. This means that if you have a two-wire wiring is divorced, you have to change it completely.
Why can not we do some ground
Redo the wiring throughout the house, of course long and expensive, but if you want a hassle-free to operate modern electric appliances and household equipment, it is necessary. Separate ground of certain outlets ineffective and even dangerous. And that's why. The presence of two or more such devices sooner or later leads to the exit included in the equipment outlet. The thing is that the contours of the resistance depends on the condition of the soil in each specific location. In some situations between the two grounding devices arises a potential difference, which leads to damage to the equipment or electrical accident.
All of the previously described device - from the slaughter parts, tubes and rods - called traditional. Their drawback - a large amount of earth works and a large area, which is required for the earthing device. This is because the contact area requires a certain ground pins that is sufficient to ensure normal "spreading" current. Complexity can cause and the need for welding - on the other to connect the grounding elements can not. But the advantage of this system - a relatively small cost. If you do a traditional grounding in a private house with his own hands, it is a maximum cost of $ 100. This is if you buy all the metal and to pay for the welding and other work carried out on their own
A set of modular earthing system
A few years ago there were modular pluggable (Dowelled) system. This set of pins which are hammered to a depth of 40 m. That is, it turns out very long earthing, which goes into depth. Fragments pin connected to each other by means of special clamps which not only fix them, but also provide high quality electrical connection.
Plus modular ground - a small square and a smaller amount of work needed. It requires a small pit with sides of 60 x 60 cm and depth of 70 cm, a trench connecting the earthing to the house. The pins are long and thin, to score them in a suitable soil is easy. Here also went to the main minus: the depth is large, and if the meet, for example, a stone on the road, have to start again. A pull rods - it is a problem. They are not welded together, and stand or not the clip - the question.
The second disadvantage - the high price. Together with the installation will cost you a grounding in the $ 300-500. Self-installation is problematic, since these rods to hammer sledgehammer will not work. We need a special pneumatic tools, which have learned to replace the punch with the hammer mode. Another necessary resistance check after each slaughtered rod. But if you do not want to communicate with welding and excavation works, modular pin-jointed ground - not a bad option.
It is necessary to check the earthing of the house about Cuban women. Dishwasher and pulls the gate on the street.
Article instructive, however, some terms cut sluh- "column" (support), "Coke earthing" (grounding electrodes).
The contour of the ground in a private house with his own hands: schemes, calculations, installation
Modern private house is equipped with a large number of household electrical appliances. To connect them to the power supply must perform grounding for safety reasons. In this article you will learn how to make a ground loop in a private house with his own hands.
So it called specially configured earth connection of electrical components. Its main purpose is guaranteed protection from exposure to electrical current in case of failure of the domestic appliance.
On sale you can find special earthing kits that cost about 4600 rubles. You can also purchase individual components for installation, they are reasonably priced. For example, the steel rod (electrode) 1.5m cost 500 rubles, coupler - 200 rubles, the connecting bar - 850 rubles. Each earthing kit has a corresponding installation instructions, which takes into account the specificity of all products.
However, the majority of required elements can be made independently. In addition, the choice of materials is quite broad. We just need to know the requirements that are presented to them.
- Corner 50h50h5 mm.
- The conduit diameter is not less than 32 mm, the wall thickness must be 3.5 mm or above.
These electrodes can be used in electricity consumption is not more than 15 kW.
- section steel wire is not less than 10 mm 2.
- Steel strip 40x4 mm.
The conductors can be used as a metal strip, a steel wire or copper wire. For example, the SIW with cores and the corresponding section without isolation. When laying in a trench - not less than 25 mm 2, with open laying - not less than 16 mm 2.
- Burying electrode - not less than 1.5 m.
- The distance between the blind area of the building and the ground circuit - not less than 1 m.
- The distance between the vertical bars - at least 1.5 m.
Mounting ground loop to be performed closer to the house, taking into account the distances specified above. The length of the connecting "linii9raquo; in this case will be minimal, that will reduce the material consumption. And most importantly, in the future it will not interfere with the administration of economic activity - the laying of utilities, flower beds breakdown.
Make a precise calculation beyond the power of a person who does not have deep knowledge. Since the calculation is based on a complex form, which contains a set of coefficients, characterizing the properties of soil, soil moisture, and the climatic conditions of the zone. These rates are available only through complex additional analyzes and calculations that require specific skills and, accordingly, will cost dearly.
For this reason, we consider how to make a ground loop in a private house with his own hands in a simpler way. Given the fact that domestic equipment is operating in a certain range of resistance circuit, in which it will function normally.
ground loop in a private house with his own hands to do is not so easy. This process is quite time consuming and involves the following steps:
- Work should begin with the digging of the trench. You must retreat to 1 m from the wall of the building and proceed directly to the process. The depth of the trench should be 0.5-0.75 m, take the form of a triangle, a big party is 2.5-3 m.
- When buying a corner is not worth saving, as mentioned earlier, you should choose the area 50h50h5 mm. Since the design of smaller size will last long. A total of 3 meters is required corner. So that it is easier to enter the Earth, you must grinder to cut one of its ends. Then the corners by a sledgehammer slaughtered almost the entire length of the vertices of the triangle, they should protrude approximately 10 cm above the ground.
- Carrying out ground loop in a private house with his own hands, the next step you need to combine into a single chain of three electrodes. This will require the metal strip 50 mm wide and 5 mm thick, as well as electric welding. This band will connect places that are on the vertices of the triangle. It must be welded to them in accessible locations. Seams should boil thoroughly throughout. It is important to cover these areas with paint, so that the impact of stray current corrosion and weld seam is not destroyed.
- Ground loop device at this stage is completed, can only lead him into the room to check.
Circuit ground is connected to the electrical panel through the metal strip, which is used for connection of electrodes follows:
- You need to dig a trench.
- ground loop (scheme below) and the strip are welded to each other.
- Thereafter, the strip must endure to the electrical panel.
- To further connect the ground bus to the electrical panel is allowed to use copper wire.
- Then, to the grounding bus is welded and screw connected with copper wire. By the screw through the two washers and nuts connect the copper cable, which collects all the ground wires to the house.
To accurately measure the resistance of the circuit require special equipment. In its absence, you can take advantage of people's way, which will determine the performance of the resulting circuit.
You need to bring the consumer a powerful (2 kW) and attach it this way: to phase in the apartment - one end of the supply wire to the ground - the other, and the device should work. Followed by a measure of the network voltage when turned off and on equipment. Slight difference voltage (5-10V) indicates that you've made the right ground loop, which is ready for use.
If the test showed a significant difference between the voltage, you will need to add more electrodes. From the triangle vertex to either side dig another trench 2.5 m long and at its end is hammered into the ground additional area that communicates with the strip, and re-inspection is carried out. If all goes well, the ground loop (diagram above) can be considered ready.
- Connect the wires to the metal pipes of any utilities.
- Covering paint compositions circuit elements.
- Used to connect the ground "nulevoy9raquo; the wire.
- Arranged horizontally grounding connectors upstairs (ground pad is used in rare cases).
1. Before the recommended write timing circuit scheme which is desirable to save. Indeed, over time many people forget, and to subsequently wonder where the connector and where electrodes are laid, there will always be at hand loop circuit.
2. Electrodes may be placed not only on the vertices of the triangle. They can be arranged in an arc on the line. It is important that the total resistance of the grounding system does not exceed 3 Ohm (circuit voltage up to 500 V) and 4 ohm (up to 1 kW). If necessary, this index decreased by setting 1-2 rods.
3. If you make a measurement alone is not possible, then the absolute confidence in the quality of installation diagrams, it is desirable to hire a specialist. This service will cost an average of 400-500 rubles.
Very often, this service is literally impose energy, arguing that this type of work are entitled to exercise only licensed organizations. However, none of the standard documentation is no indication of the ban on the installation of an independent circuit.
Naturally, the installation can be ordered from the power industry, take the finished work and pay for it. But if you are confident in their own abilities, why not mount a ground loop independently.