Install power outlet is not a big deal. However, the nuances of this process largely depend on the surface material. This article describes in detail, how to install power outlet in wall in plasterboard partitions and concrete walls. Recommendations for choosing products and step-by-step technology for their installation will help to understand this process and do the work yourself.
Why is the installation power outlet in the house so important
Connecting wiring devices to the power cable must be safe. The rules stipulate that each outlet is mounted together with a protective housing – a power outlet box. This mounting box or glass provides protection against electric shock.
Hinged power outlets, as well as street models, are already equipped with a protective housing that meets safety requirements. It is advisable to equip built-in type devices with power outlets for installation.
The main functions of the installation boxes for outlets:
- Structural – glasses reliably fix and hold the power outlet in the wall.
- Protective – the box prevents dust, moisture and foreign objects from entering the wiring device.
- Protection against electric shock – glasses for installing outlets in concrete walls and partitions are made of dielectric materials, so that the supporting structures are protected from current from the contacts.
- Aesthetic – a seat made of plastic or metal provides a flat surface around the outlet, so the entire installation area looks neat.
- Fire safety – if a fire occurs inside the outlet, the flame will not be able to leave the box.
Useful advice! If the glass jumped out of the wall or was simply poorly fixed, it can be fixed using a self-tapping screw, which should be screwed into the base. For concrete surfaces, you must also add a dowel. An alternative to this method is a glue gun. When working with drywall, the power outlets are fixed with a plaster solution. First, the surface must be treated with a primer (PVA glue is suitable).
Product Selection and Installation Recommendations for power outlets
The material of the walls is the first thing to consider when choosing a power outlet. According to this criterion, existing types of products can be divided into two categories: for solid walls and for thin partitions.
Solid walls include bases made of solid materials. Among them are aerated concrete, brick, concrete and reinforced concrete. power outlet without additional clamps are used for such materials. To fix the product in the wall, a building mixture (alabaster or gypsum) is used.
In such glasses mounting holes for wires are provided. They are placed in the bottom or in the walls. Before you install the power outlet in a concrete wall, you just need to break the jumpers and squeeze out the plug to clear the hole.
Thin partitions are made of composite materials. These include plastic plates, plasterboard and plywood sheets, chipboard, etc. For such surfaces, mounting boxes are used, equipped with mounting tabs made of metal or plastic. They cuddle, securely fixing the glass in the hollow wall. The paws are held inside the box with screws that adjust their position.
To install triple outlets, glasses are used, in the side of which there is a special mechanism for fasteners. Products of this type can be combined into whole blocks, fastening them by the method of groove joints.
What are the requirements for glasses for the outlet
The material from which the box is made must have a sufficient margin of safety. Quality products can easily withstand the force that is applied to remove the plug from the outlet. In this case, the mounting box should remain in the wall, and not be pulled out after it. To ensure these conditions, manufacturers equip the glasses with special grooves, ribs and hooks. All these elements are located on the outside. This rule applies to glasses that are fixed in the wall with building mixtures.
Technological openings perform two functions: they provide access to wires to the outlet and increase the degree of fixation of the box inside the wall. After installing the power outlet in concrete, it will not be possible to pull out the glass. We’ll have to break the plastic or destroy the wall section around it.
As the material for the manufacture of most boxes, plastic is used. In production, several types of this raw material are used. There are also metal power outlets for wood. But still it is worth giving preference to plastic. This material, unlike metal, has dielectric properties. In addition, the purchase of a plastic power outlet will cost less.
Important! Before buying a glass, you need to make sure that there are ribs necessary to fix the outlet. Manufacturers mold them on the inside of the products.
Metal power outlets have another drawback. Inside they have a perfectly smooth surface. The mounting brackets on outlets simply have nowhere to hook, so wiring devices may fall out.
Plastic glasses should not support combustion. This requirement is of particular importance if it is intended to install a wall power outlet in drywall and other composite partitions. With brick and concrete walls, the risk of fire is much lower. However, a short in the outlet may cause a fire in the wallpaper or furniture nearby.
Installation distances between power outlets and other electrical installation standards
Before you install the outlet in the wall, you need to choose the best place to place it. According to the standard, the mounting distance between the centers of the glasses is 71 mm. This value is used in cases where you need to organize several outlets in one place at once. Wiring devices are classified as sources of increased danger, so the points for their installation are selected taking into account safety requirements.
Basic rules for the placement of electrical installations:
- between the gas pipe and the outlet – at least 0.5 m;
- It is advisable to install electrical installations from the side where the handle is located on the door and at a height of not more than 1 m from the floor;
- in the bathroom, installation of power outlets with an indent of at least 0.6 m from the bathtub, shower and washbasin is allowed to prevent splashes;
- the distance from the floor depends on the purpose of the outlet. If the electrical installation is necessary to connect large household appliances, its installation is carried out at a height of 1 m from the coating. This rule applies to dishwashers and washing machines, electric stoves, refrigerators. For universal outlets, a height of 0.3 m is sufficient;
- in the kitchen, where small appliances are located on the table, outlet blocks under it are installed at a height of 0.1 m above the level of the work surface;
- parameters for power outlets for wall-mounted TV in the kitchen are selected individually;
- the correct installation of the power outlet also provides for horizontal placement of boxes. There should be at least 0.15 m between the outlet and the door frame. The same applies to the floor, corners and ceiling of the room;
- the electrical installation is mounted with an offset of at least 0.5 m from the heating radiator.
Important! It is strictly forbidden to install power outlets above gas and electric stoves, as well as heating appliances. An exception is the “warm floor” system. Installation of electrical installations in the rooms of saunas and baths is not allowed. In addition, the regulations prohibit the use of walls that open onto the street to organize wiring and placement of outlets.
Tool for mounting power outlet: what core drill bits are needed for concrete and brick
The choice of crown depends on the installation technology and the material of the walls with which you will have to work.
For domestic purposes, several options are used:
- Carbide-tipped crowns – cutting edges are coated with solders from Pobedite or other hard alloys. Suitable for dry impact drilling.
- Tungsten carbide crowns – designed for work with concrete, brick, stone. Can be used to install undergrowths under a tile or shell rock.
- Diamond crowns – cutting edges coated with diamond spraying. Suitable for drilling concrete walls in a shock-free manner (wet and dry).
The shank of the crown must be suitable for the chuck of the tool that will be used for drilling.
The shape of the shank and the type of fastening distinguish these types of crowns:
- with a hexagonal tip;
- with a trihedral shank;
- SDS Plus and SDS (suitable for most household drills and rotary hammers, their diameter is 10 mm);
- SDS Top (for semi-professional rotary hammers, diameter – 14 mm);
- SDS Max (for professional rotary hammers, diameter – 18 mm).
To install the power outlets in a concrete wall with your own hands, you will need the following set of tools and supplies:
- electric rotary hammer with a cartridge that meets the SDS Max or SDS Plus standard;
- concrete drill (length more than 6 cm, diameter within 5-8 mm);
- hammer and chisel (an alternative is a steel blade for a perforator);
- crown for concrete of the appropriate size with a shank under the hammer drill (SDS Max or SDS Plus);
- respirator and safety glasses;
- container for preparing gypsum mixture;
- putty knife;
- gypsum powder;
- mixer nozzles on a drill for mixing the components of the solution.
Note! Do-it-yourself installation of power outlet can be started only after the wiring is fully organized in the room. In some cases, an additional cable is allowed.
Pobedite and carbide-tungsten crowns for brick and concrete for power outlets
The decisive factor in choosing a crown is not only the drilling method and wall material. The size of the holes, their number and the budgetary capabilities of the buyer also matter.
Tungsten carbide and victorious nozzles are distinguished by the most affordable price. Their resource is designed for a small number of holes. Such crowns are suitable for beginners who want to do the installation work with their own hands. The diameter of the holes for the outlet must correspond to the size of the plastic cup. Given this requirement, a crown with an identical size is selected.
A hard alloy of cobalt, tungsten and carbon is applied to the cutting edges of the victory crowns. Such soldering is durable, therefore, the nozzle can be used for drilling brick and concrete walls by impact. But it will not stand contact with steel reinforcement.
Tungsten carbide nozzles do an excellent job of drilling bricks, concrete and ceramic tiles. These crowns greatly simplify the work when it is required to install the power outlet in a wall that is already tiled. Tungsten carbide nozzles are designed for power tools (perforator, drill), whose power is at least 800 watts. In this case, an unstressed drilling method should be used.
Useful advice! When the crown hits the valve, the soldering is removed from the cutting edges. Therefore, it is advisable to have a diamond-coated nozzle of a similar size on hand to use if necessary.
How to choose a diamond crown for concrete for power outlets
Diamond chips, which are applied over the cutting edges of the crown, effectively cope with the drilling of such hard materials as granite, concrete, stone, reinforced concrete. She is not afraid of armature.
Diamond coated crowns are used for dry and wet drilling. In the second case, the cutting device is periodically cooled in the process using liquid. Dry core bits are used in domestic conditions. They are suitable for working with concrete and brick walls. In this case, an unstressed method of drilling using a drill or perforator is used.
The advantages of crowns for the dry method:
- the possibility of drilling reinforced walls;
- high speed of hole formation;
- large working resource;
- minimum amount of dust;
- low noise level;
- in the process of drilling the walls retain their integrity.
Crowns for wet drilling are used for industrial purposes. In such devices, there is a fluid supply, which eliminates overheating of the tool. These crowns are designed to create holes of great depth when it requires drilling through granite, reinforced concrete or marble walls.
How to install concrete power outlets: installation technology
The installation of power outlet in a concrete wall can be done independently or hired professionals for these purposes. On the network you can find many companies involved in construction and finishing work. The list of their services includes installation of outlets. Specialists will help to cope with the laying of cables and plunge wiring devices (junction boxes, switches, power outlets, etc.).
The installation price of the power outlets depends on the wall material, the scope of the proposed work, as well as the remoteness of the object. In the capital, the cost of connecting one device is about 8.65-10$. This price does not include cable laying and wall decoration. Therefore, many owners of apartments and private houses prefer to independently cut out power outlets.
Work on the organization of outlets is carried out in several stages:
- marking in the installation area;
- cutting out landing holes;
- installation and fixation of the power outlet;
- wall finishing;
- installation of an electrical installation device and connection of power cables;
- installation of the outer cover.
Important! Carrying out any work with wiring, including the installation of power outlets, it is necessary to turn off the electricity.
How to make holes for installing the power outlets in concrete
First you need to decide where the power outlets will be located in the room and how many there will be.
How to make markup correctly:
- To begin with, the height of the future outlet is determined. To do this, use a tape measure to measure the distance from the coating to the intended installation point.
- If there is no flooring in the room, add 5 cm to this indicator.
- Then horizontal and vertical lines are drawn. This must be done so that they intersect at the point where the box will be mounted. To make the lines smooth, it is advisable to use the building level.
- It remains only to attach the power outlet to the wall and circle its outer contour with a pencil.
If it is planned to install several power outlet boxes, first a horizontal line is applied to the wall (taking into account the height from the floor). Having determined the center of the first glass, you need to draw a vertical line through this point. With an indent of 71 mm, the center of the second undergrowth, etc. is outlined.
With the help of a power tool and a victory crown, a hole of the required size is made in the wall. A drill is installed in the center of the nozzle. The tool must be positioned so that it falls exactly in the center. If a standard size power outlet box (67-68 mm) is used in the work, a 70 mm crown can be used for work.
After a hole has been made in the wall, you need to pull out the crown and knock out the remaining concrete from the base. For this, a hammer and chisel are used. Depending on the layout of the wiring, you need to make a strobe in the wall to bring the power cable to the outlet.
Note! If the wall is made of high-strength concrete and has reinforcement, then you need to use a diamond crown. For work, a nozzle of appropriate stiffness is selected. If reinforcement gets in the way of the crown, it can be cut. To do this, put the tool in unstressed mode.
Installing the power outlet: how to fix the mounting box in the wall
Insert a glass into the hole cleaned of debris. If the seat is formed correctly, the product will freely enter in width. At the same time, a small margin of space should remain – about 5 mm.
In the undergrowth, partitions are removed, with which technological holes are blocked. They start the wires (always de-energized) and the box is inserted into the wall. Alabaster or gypsum is used to fix the undergrowth in concrete.
The pour time of a clean solution of gypsum is from 3 to 5 minutes. Therefore, all work must be carried out as quickly as possible, and the mixture itself should be prepared several times in small portions. In addition, you should regularly clean the container from frozen gypsum. To prepare the solution, a plastic bucket of 3-4 liters is suitable. To make the mixture homogeneous, it is necessary to use a mixer nozzle. In this case, the drill or perforator switches to shock-free operation.
So that the wires do not interfere in the process, they must be folded inside the box with a bay. In 2 minutes Before mounting the box, the seat must be moistened with water. When the liquid is absorbed, the walls of the hole are lubricated with gypsum. To apply the material, use a spatula. The back of the glass with a threaded wire is also treated with a solution and inserted into the seat. The position of the undergrowth is immediately adjusted so that its edges coincide with the plane of the wall, and excess solution is carefully removed.
How to properly install the power outlet to wall plaster
It is recommended to install the power outlet in the already plastered walls when all cables are laid. If you have to work in rough finishing conditions, the thickness of the finishing layer must be taken into account. For this reason, the mounting boxes are deepened by about 1-2 mm with respect to the wall plane. Thus, together with a layer of plaster, the total figure is 5 mm.
If several power outlets assembled in one block are mounted at once, a special pattern is used, which prevents the glasses from moving in relation to each other. This design is set according to the level, after which the pattern is fixed in the hole using wedges-spacers.
The formation of landing holes and the fixing of products in the wall using gypsum mortar is carried out in a standard way. When the mixture hardens, you can begin to plaster the walls.
Useful advice! The stores sell special plugs for power outlet boxes with guiding beacons in the form of antennae.
Plugs are installed on the box before applying the plaster to the walls. They prevent the mixture from getting inside the glass, eliminating the need to clean it. The guiding beacons act as a guideline to determine in which place under the stucco the undergrowth is. By pulling on the antennae, the plug can be easily removed.
How to install power outlets in drywall
Power outlet for drywall have a completely different structure than the boxes for brick and concrete. To fix the products in the wall does not need a gypsum mortar. Therefore, working with them is easier, and the installation itself is cheaper. For the formation of holes, special drywall crowns are used. Allowed the use of nozzles designed for wood.
How to install a wall outlet in drywall:
- By analogy with concrete walls, markings are applied to the partition.
- A hole is drilled with a crown, which in diameter corresponds to the size of the undergrowth (68 mm).
- When installing several outlets between the centers of the products, it is necessary to maintain a standard distance of 71 mm.
- In the glass, the partitions are removed and wires are made in the vacant holes.
- The box is inserted into the hole and the expansion screws in the structure are tightened, fixing the product in the partition.
- It remains only to trim the ends of the wires and install the outlet.
The technologies for installing outlets in drywall and concrete are significantly different. Working with solid walls is much longer and harder. But even a relatively easy to use drywall requires careful attention to all the nuances. The reliability, durability and appearance of the outlet will depend on how correctly the cup installation is performed.