By equipping the dacha section, the owners must solve a number of operational issues associated with the new construction. To comfortably live in a country house, you need to think about quality water supply, sewerage, and electricity. The laying of cables in the ground in the pipes is necessary to provide power to lighting devices, heaters and other household appliances. To perform this work independently, it is necessary to study the technology for conducting it. This will create a quality and durable system.
General requirements for work
Not every owner of the site is satisfied with the air conduct of the cable system to the house. More and more turns gain an underground version of laying power communications. They enter the house through the basement. Therefore, this type of work is performed even at the stage of laying the foundation.
A plan for such electrification is being developed even before construction begins. Think of all the ramifications of the cable. At this stage, the soil condition, type of climatic zone and other safety aspects of the system operation are taken into account.
The laying of cables in the ground in the pipes must be carried out in accordance with existing requirements and rules. When carrying out such work, it is necessary to take into account the norms of SNiP and PUE, as well as GOST. Performing all necessary installation operations, they must observe the rules of labor safety.
Types of materials
Laying cables in the ground in pipes (PUE, SNiP clearly regulate this process) requires the selection of the correct materials. First of all, they must be safe. But the cost of them should be acceptable. Today there are communications that do not need to be carried through pipes. These are armored cables. However, their cost is very high. Therefore trenching method of installation assumes the use of cheaper cable in special pipes.
The cable that passes under the ground must be marked with a CIP. This variety allows you to apply all existing standards. However, it must be mounted in a trench way in the pipe. The track can be metal or plastic.
PVC / HDPE pipes are made of plastic. They are fairly solid and have a smooth surface. A DKC-type corrug pipe is only allowed for internal work, for communication under a layer of plaster.
Laying cables in the ground in pipes HDPE, metal or metal-plastic varieties has a number of advantages. This allows you to protect the wire from adverse weather conditions, mechanical damage.
If you need to replace the conductor once, you can easily get the old cable and start a new one along the already existing route. This technique allows you to comply with fire safety rules. This is especially important in wooden houses. The pipe, designed for trench mounting, prevents the appearance of a spark and overheating of surrounding materials.
The advantage of this system is additional cable protection. Thanks to the pipe it will not damage rodents, microorganisms. If the conductor is laid in the ground without such protection, moles can gnaw it.
The laying of cables in the ground in the pipes (pictured below) must satisfy a number of mandatory requirements. The depth of the conductor in the ground should be at least 70 cm. This indicator varies depending on the climatic zone.
You can not run the track under the foundation. From it, the cable must pass no closer than 60 cm. The width of the ditch is selected in accordance with the number of conductors passing along the route. They should be located no closer than 10 cm apart.
The trench is covered with sand and rammed to a level of 15 cm. Before the arrangement of the route, it is necessary to consider the site plan. It is not allowed that pipes with electrical conductors pass closer than 1 m from gas pipes or 2 m from water pipelines.
If a brick is used to strengthen the transmission line (with significant subsidence of the ground), it should not be hollow. Above the route, it is necessary to lay a tape with an inscription about the passage of the power cable here. Then again a layer of sand and earth with a slide is filled.
Features of a bookmark in plastic pipes
The laying of cables in the ground in HDPE pipes has a number of features. They must be studied before carrying out the work. Initially, you have to draw a trace of the route. Fixing the pipe must be made every 60-80 cm. For this, use special clips or clips.
To pull the cable through the pipe, use a special broach or metal wire. All elements of the route are connected with a special soldering iron. The cable inside the joint should be fitted with special couplings.
If the track has a vertical layout, it is made with a slope. So it will not collect condensate.
Features of a bookmark in metal pipes
If you want to pull a conductor in a wooden building, a bath, it is better to give preference to a metal pipe. This is a strong product. It can be galvanized or iron.
It should be noted that laying cables in the ground in DKC pipes is unacceptable. They are used exclusively for laying cables inside the premises. To connect the metal elements of the route, you can use welding or threaded fittings.
When installing such a system, it is necessary to ground. The slope should be in the direction of the junction box. Pipes and joints must be painted to avoid corrosion. For internal works, it is better not to use such constructions. When pouring the floor with concrete, the painted surfaces will not adhere well to it.
The laying of the cable in pipes in the ground, the norms of which are governed by the PUE and GOST, must be carried out responsibly. It is not allowed to make connections in the pipes. This is done only in the most extreme cases and at the same time they use special couplings.
The track can not be bent at an angle of more than 90 degrees. Otherwise, it will not be possible to replace the old conductor. The pipe joints must be further sealed. The input must be leakproof.
Wire cross-section must be selected in accordance with the system load. It is better to give preference to a copper cable. Aluminum conductors are only suitable for interior work.
Several expert recommendations
The correct laying of cables in the ground in the pipes is done by yourself quite simply. However, one should also take into account the advice of experts. They recommend using a route whose width will be 3 times larger than the conductor itself.
If the winters in this climatic zone are very severe, the ground can freeze more than 70 cm. To prevent the pipes from becoming deformed, they should be carefully fixed. But it's better if the route goes deeper.
When developing the plan, it is necessary to avoid laying a trench under the parking lots, a playground or garden paths.
Having familiarized with such technology as laying cables in the ground in pipes, you can do this work yourself. Observing all the requirements of building codes and safety regulations , you can create a quality, durable route. Its operation will be safe.