Wiring in the bathroom requires professional knowledge and skills, so if you are familiar with the electrician only at the household level, it is better to entrust all the work associated with it to professionals who know their business well. However, even if you entrust the organization of electrical wiring to professionals, it will be useful for you to know about the most important aspects and main stages of this work in order to be sure in the future of your own safety and the safety of your family. After all, electricity in case of any malfunction can cause a breakdown of household appliances, and in the worst case - cause serious damage to health. If you want to make wiring yourself, study this issue in detail. In this article we tried to generalize all the information on this topic.
In the bathroom due to close proximity to water, the danger of electricity increases tens of times. That's why it's so important to organize the wiring in the bathroom according to all the rules.
All the norms and recommendations for the arrangement of electrical wiring in rooms with a high level of humidity are prescribed in the "Rules for the installation of electrical installations", "Building codes and regulations", and also in the State Standard "Electrical installations of buildings".The documents are publicly available, so anyone can easily read them.
How to start the installation?
Begin the installation of electrical wiring, as a rule, with the layout of the room. With this work you will be able to cope on your own. Specialists use special computer programs to create wiring diagrams, but for novice masters it will be more convenient to do it in the old fashion: with a simple pencil on paper. Using the construction roulette, make all necessary measurements and draw a simplified drawing of the bathroom, remembering the location of doors, sewers, etc.
Next, you need to think about the location of furniture and sanitary equipment, because with respect to these elements of the interior we will choose a place for the sockets.
Calculate how many indoor appliances will be powered by electricity. At least - it's a washing machine. Plus one outlet is needed for small household appliances, such as a hair dryer, electric shaver, hair iron, etc. Another outlet is desirable to provide for the reserve - in case of connecting new equipment, for example, a shower cabin or an electric towel warmer.
To ensure that the walls of the bathroom are not entirely covered with rosettes, it is better to purchase double ones. Such an approach will not only save space, but will also require less physical effort, since it is necessary to pierce the strobi for each socket in the wall, and this is a heavy and dirty work.
Lighting should also be considered: determine how much lighting will be in the bathroom and where they will be located. There are many options: it can be classic ceiling, wall and floor lamps, LED lighting or something else. The light source can be one or more. The main condition is that all of them are moisture resistant. In addition, provide space for ventilation and choose how to connect it.
Required Materials
The next stage is the selection of materials and equipment. We make the list of purchases( the number of components will depend on the dimensions of the bathroom and the number of electrical appliances installed in the room):
- Power three-core cable from copper. For different equipment, the cross-section of the wiring must be different. So, to connect household appliances you need a cable with a cross-section of 4 mm. Wiring, for outlets - 2.5 mm., And for lighting fixtures - 15 mm.kv. Experts recommend stopping the choice on the imported NYM cable or on domestic VVGng;
- A set of anchor bolts. These fasteners are used to mount electrical wires to a wall;
- Sockets and switches. When buying, pay special attention to their characteristics: they must have an appropriate class of protection against moisture and dust, they are indicated by the IPXX marking, where the first digit is the dustproof class, and the second is the moisture protection class. Sockets should be equipped with a special lid.
- Waterproof luminaires. The protection class is marked with the same marking as on the sockets.
- Power cable PV-3 , necessary for the organization of the equipotential bonding system.
Safety precautions
Wiring laid in the bathroom must meet several important requirements. You do not have to worry about safety if:
- electrical wires are held in a hidden way;
- for wiring installed RCD;
- all electrical devices are grounded;
- in the bathroom there are no switches and switchboards;
- sockets have a class of protection against moisture penetration not lower than IPX4;
- sockets are installed at a distance of at least 60 cm from water sources;
- all connections and wiring connections were carried out outside the premises, without the use of terminals,
- in the bathroom, in which there are powerful electrical appliances( for example, a washing machine or a boiler), a circuit breaker is installed.
Special attention should be given to the organization of grounding. If your house was already built in the XXI century, then this point, most likely, was taken into account by the builders. If you live in an older house, then you will have to take care of the grounding of the devices yourself. This is done very easily - through an electric flap located on a staircase.
Some ground the equipment in a very risky way - through the batteries or the riser pipe. Such an ill-conceived decision can cost lives, because we do not know the condition of the pipes outside our apartment. Installation of electrical wiring - this is the case where it is better to go through a proven path, rather than look for original solutions.
Sequence of work
- To begin with, it is necessary to prepare in the walls grooves for laying electrical wires and sockets. For this, using a perforator hollow out the grooves under the wires( shtroby) and jacks for sockets and junction box. Do this in accordance with the plan, drawn up at the initial stage of the work.
- Next, the jigs and the junction box are installed in place. Strokes are laid with wires and fixed with dowel-clips or cement mortar. The ends of the electrical wire are connected to the receptacle, without forgetting to protect against insulation first.
- The next step is the installation of outlets. Specialists recommend fixing the visible parts of the sockets after finishing the finishing works, so as not to stain them with building materials. The
- is then connected to the wiring by an automatic machine and a residual current device. The correctness of the installation is checked with a multimeter - an instrument that is able to detect the presence of a short circuit.
- If everything is in order, you can seal the stitches with plaster mix or .
Separately it is worth mentioning the organization of the system leveling potentials. For this purpose, a special power cable is used, through which a washing machine, a bath, a sink and pipes with hot and cold water are connected. All this is connected to the grounding bar, which is mounted on the lead-in shield.
Recommendations and tips
- When buying electrical cables, pay attention to the material from which they are made. Preferably use copper rather than aluminum cables, since they will last you much longer. It is inadmissible to combine copper and aluminum wires. It is also recommended to check the cable cross-section area before purchase - the dimensions indicated on the package do not always correspond to reality.
- You should choose quality equipment. Automats and RCDs from proven manufacturers using good materials are usually more expensive, but in the process of operation they fully justify their price. Specialists advise to avoid electronics and purchase mechanical protective shutdown devices. They are safer, since they do not need their own power source.
- If you are updating the wiring in the whole house, it is better to connect the meter to the energy company. First, it is safer, and secondly, it will save you further from the problems associated with sealing the counter.
So, the installation of electrical wiring is a very important stage of repairing the bathroom, so the safety of people living in the apartment depends on how well the work is performed. Therefore, it is so important to choose the right materials and equipment, take all necessary safety measures and act in compliance with all recommendations.