In practice, there are many ways to connect electrical outlets with wiring. During their implementation, different goals can be pursued, from austerity of materials and means to reliable, long-term and safe operation of the equipment.

Given the increasing needs of the population for the use of powerful electrical appliances in everyday life, we should dwell on the most favorable electrical circuit for a home network that provides maximum safety during operation. It should be divided into two components of the system: the power unit, which provides electricity to household appliances through outlets, the lighting system, separated from the operation of the power unit. To create the power circuits of the internal apartment panel, circuit breakers are mounted according to the number of necessary connections. A cable is laid from each machine ...

According to the new current rules, all fixtures must be connected with three electric wires. In cases when the apartment is being repaired and the wiring is done according to a two-wire circuit, modernization and transition to a three-wire power supply system with PE conductor should be carried out. But if the place for connecting it is not prepared on the floor board, then the ends of the protective zero with the yellow-green marking of the insulation are left ready for connection, but they do not commute.

Luminaire connection diagram via a single-button switch. The contact of the switch is connected from phase L. The second end of the cable core is output through the additional terminal of the DC in the junction box on the cartridge to the lighting lamp. The connection of the cartridge must be carried out so that when replacing a burned-out bulb when the switch is on, a person does not fall under the phase potential ...

Installation of cable lines and wires ends with their connection. An electrical connection that ensures the health of the entire circuit. This connection must be reliable, must not allow electrical losses and must be protected from accidental access, that is, it must ensure safety.

It is achieved by using special enclosures and junction (distribution) boxes. And the other two necessary conditions are ensured by the use of special certified clamps or terminal blocks. We will talk about the diversity of the latter. But first, we answer the question: “And why exactly the terminal blocks, in fact?” In fact, why can not do ordinary twisting? After all, you often hear or read that the correct twisting will be more reliable than many terminal blocks ...

Work related to connecting the internal network goes far beyond the elementary electrical connection of the upper terminals of the input automatic machine and the main transmission line network.

The technical nuances and difficulties in this matter are due to the fact that the branches from the power lines and the input itself remain virtually unprotected against overcurrents of short circuits. After all, on a support in the place of branch execution, in the general case, there are no any protection devices.

Therefore, a short circuit in the branch is fraught with an elementary fire, because the hot arc between the conductors in the case of this short circuit itself will stretch to the very destruction of these unfortunate conductors. For equipment in the substation, there will be no emergency operation: the wrong current level. Accordingly, a protective shutdown will not occur. This situation is most dangerous for obvious reasons for wooden houses. And the most dangerous part of the short circuit branch is wall penetration ...

To date, no overhaul can do without a wiring device and electrical equipment. Even if you plan to carry out cosmetic repairs, and at the same time live in an old-style house, then you just need to replace the electrical wiring. This is due to the fact that in the old rooms the installation of electrical equipment and wires was carried out, designed for loads that are considered to be insignificant by modern standards.

In the sixties of the last century, no one could even think that they would need an electric cable that would withstand the load of many simultaneously connected various electrical appliances. A huge TV, a powerful computer, a refrigerator, air conditioning, an electric kettle, a vacuum cleaner - and this is not a complete list of electrical equipment that are today an integral part ...

"Rules for the installation of electrical installations" allow only 3 ways to connect conductors: soldering, welding and clamping in terminals. This also applies to pre-twisted wires in junction boxes. The best electrical characteristics, reliability and durability are uniquely welding. In addition, with a large number of compounds, this method is also the fastest and cheapest. With copper wires, the issue is resolved and closed.

However, despite the requirements of the 7th edition of the PUE on the termination of the use of aluminum wires for electrical wiring (with a cross section of less than 16 sq. Mm.), They are still used and quite widely. For example, during the repair (without complete replacement) of the old aluminum wiring. Combining copper with aluminum is even worse than leaving aluminum. Thus, the question of welding aluminum becomes very relevant, especially since its physical and chemical properties other connection methods make it difficult...

Safety during electrical work must always be extremely responsible. When performing construction work, injuries often result from improper use of various tools and electric shock.

Construction companies, as a rule, provide on-the-job training on safe working methods. Data on the conducted briefings shall be reflected in the safety journal indicating the numbers of the instructions for which the briefing was conducted.

Unfortunately injuries do happen. And when an investigation is carried out about an injury that has occurred, the injured person very often says that he was not instructed on safety issues: “Yes, I signed it in some kind of magazine somewhere, but I don’t know why.” Therefore, it is necessary not only to instruct, but also to give all the required instructions for personal use to all the workers for signature ...

The need to transfer sockets and switches, as a rule, arises after moving furniture in the apartment, or when bringing the wiring to the so-called European standard, according to which the sockets are installed at a height of 20 - 30 centimeters, and switches at a height of 90 - 120 centimeters from the floor.

If you want to lower the socket, and the wiring is done in a coupler, then just install the new installation box in the desired location and shorten the cable to the desired length. The situation is more complicated when you need to increase the cable. Two tasks immediately arise here. How to connect cable cores so that the connection is high-quality and durable, and what to do with the old installation box.

The worst solution to this issue is to connect the cable, for example, twisting the cores, insulating the twist, cover the wires with alabaster in the old installation box and forget where this time bomb is ...