Drywall is appreciated by designers and amateur builders, who found in it an excellent solution for hiding uneven walls. This material, in comparison with others, accelerates the restoration of the most complex premises many times over. In addition, it can be used to mask wiring, and without any strobes in the walls. Performing such manipulations can be dangerous if you do not take into account the specifics of the material and key requirements during operation.
Cable laying in drywall is one of the hidden types of wiring. For it can be used: pipes with a zero level of fire hazard, corrugated hose, duct made of non-combustible material.
All these methods are provided for by the rules of the installation of electrical installations, and if you comply with the technical standards, you will get an electric circuit that is reliably protected from mechanical and thermal influences. You can start working immediately after the profiles are mounted under drywall sheets.
Each wire is supposed to be insulated and fixed in a special way - only then will it be possible to avoid emergency situations.
Corrugated Hose Option
A clear advantage of this approach is the ease of replacing cables if they suddenly fail. The necessary components will be: the corrugated hose itself, the clips that will hold it, distribution boxes, electrical cable, dowels and nails (clips are attached to them), a punch and a drill to it.
Prior to the commencement of all work, it is necessary to evaluate how the devices consuming current are located in the room. Thinking over the configuration of the system, pay attention to the power of each of the target nodes. The diameter of the corrugation is selected in accordance with the thickness of the installed cables. The next stage of work is to attach the corrugation to the wall, followed by closing it with profile frames.
To facilitate mounting, the wall is covered with holes with a gap of 300-400 mm. It is at these points that it is convenient to pin clips with a dowel-nails. During installation, make sure that the cable does not sag anywhere. When marking the future power grid, the points where the junction boxes, sockets and switches will stand are first marked. When it is known that the ceiling will be closed, it is advisable to stretch the wiring from one box to another.
The wiring along the walls passes strictly 0.15-0.2 m below the ceiling, and distribution boxes are placed on the same line. These boxes themselves should be carefully selected - the cover must correspond to a certain level of protection, which is prescribed by the standards for branching electrical wiring in hollow walls.
The launch of the cable into the corrugation begins from the boxes , keeping the vertical as clear as possible towards each of the switches and lamps in the room. The same path should be used when connecting the distributors to outlets.
Specialists recognize the VVGNG fireproof cable as the best option for laying in drywall. It is suitable even in a wooden house. It is also advisable to buy special plasterboards for drywall and terminal blocks that facilitate the connection of wires. It is recommended to use a drill with a milling cutter of 6.5 cm caliber - just such a format will allow you to securely plant the sockets in the gates.
Clips can be replaced when installing wiring with plastic clamps. If you have the skill to handle them, the work will go faster, but you need to be careful not to tear the corrugation with the edges of the profile. In profiles, drill holes of the desired diameter, but you can limit yourself to buying profiles with ready-made clearances. It is recommended to immediately remember where the end of the output wire should be, since then the wall will be sewn dry with a drywall.
If repair is already done
It happens that some time after the installation of sheets of gypsum plaster, there is a need to add sockets or switches under a layer of drywall.
This problem is completely solvable with your own hands, and even without dismantling the main layer, you need to:
take a thread and a heavy nut;
prepare a round gate in the selected place;
the thread is lowered from the open ceiling above the gate (the nut as a weight drops to the level of the hole);
the upper edge of the thread is used to connect the cable (insulation tape is used);
the thread is pulled down, leading the conductor out, and the movement is stopped at this.
Installation of electrical channels
In most cases, the wires are made of copper, covering it from the outside with an insulating sheath. However, the decoration of the premises with drywall requires the use of a metal frame and a large number of self-tapping screws with sharp edges. No insulation material can withstand contact with such products and will break quickly. Therefore, in practice, channel mounting with a corrugated hardened shell has become the de facto standard.
Such tubes are mounted very easily and allow you to further strengthen the protection against liquids and various rodents. As a result, even in the bathroom of a private home, there is no better way to provide power. PVC pipes or plastic channels are not so practical for installation - they are laid worse in hard-to-reach areas.
Cable channels can be fastened with frameless sheathing with drywall only after preliminary preparation of the necessary wall sections. They are ditched and a cable is laid in the gates. To install the outlet and the switch, you should definitely ditch special pits. Connect cables to the walls with special clamps. This technology is not much different from creating hidden wiring under a layer of plaster.
The electric cable in the home network should be directed either vertically or horizontally , distortion of straight lines is not recommended. The vertical sections connect primarily the points of placement of switches and sockets, and the horizontal sections are made next to the ceilings and floors in order to withstand the required distance. When laying grooves, the work pattern is strictly followed. Depth is chosen arbitrarily, only full immersion of the cable in the strobes is achieved.
To install sockets, switches or junction boxes, round holes are prepared, reaching a depth of 35 mm. This work is done with the help of drills and special nozzles (crowns), the diameter of which is strictly selected according to the width of the holes. When such preparation is completed, you can mount the wiring under the GCR through the gates. In places of fastening of cables putty is applied. Completely putty grooves need only after laying the entire scheme.
When plasterboard sheets are mounted in a wooden house, the wiring technology is greatly simplified. The circuit diagram is the same as usual, but instead of a drill, it is worth using a notch that can successfully replace an electric tool. To fix the corrugated hose, use plastic clamps or a copper wire, carefully observing that the wiring cannot “walk” too freely. The more anchoring points (within reasonable limits), the more reliable the configuration.
You can use the same approaches when working with 380 V.
In the next video you can clearly see how to lay the cable in the wall of drywall.