Thunderstorm discharge is very dangerous, since its value can reach several hundred thousand volts. After each thunderstorm, the equipment fails, the power lines are damaged, and people can also be injured. It is impossible to determine where the lightning strikes, so it is a mistake to assume that this phenomenon will bypass your home. Lightning may never get into a particular section of the power grid and, accordingly, the danger of a thunderstorm can be underestimated. If lightning for several years has never hit a particular section of the power grid, this does not mean that such a possibility is excluded.

The occurrence of lightning overvoltage in the household electrical network in the absence of appropriate protection will lead to the failure of household electrical appliances that were included in the network at that time, and there is also a danger that residents of the house will suffer. Therefore, care must be taken to protect the wiring ...

A broken ground wire in a three-phase electrical network is a dangerous phenomenon that can lead to various negative consequences for household electrical appliances, as well as for people who operate them. In this article, we will consider the consequences of a zero wire break with a specific example and the corresponding methods of protecting home wiring from a zero break.

As an example, consider an apartment building, powered by the most common TN-C-S grounding system. A system of this type provides grounding of the neutral of a power source - a substation transformer. From the substation to the consumer, in this case, the house, electricity is supplied through four conductors - three phase conductors and a conductor, which combines the functions of a working neutral and protective grounding conductor. After entering the building, the combined conductor is divided ...

Replacing home electrical wiring is one of the most expensive stages of major repairs in an apartment or house. Against the backdrop of constantly rising prices for cable products and other components, the question of how to replace the wiring with minimal cash investment is becoming increasingly relevant.

In this case, you can’t just unreasonably remove certain elements or underestimate the cross-section of the wires, as this can lead to the fact that the installed wiring will be unreliable and will not provide full power to home electrical appliances. Therefore, we need to consider how to save money when replacing home wiring without compromising reliability, which we will discuss in this article. The process of replacing wiring can be divided into three main stages: drafting a future wiring, selection and acquisition of components ...

People build buildings mainly for two purposes: for living or for solving technical issues. When creating the power supply system in these rooms, special attention is paid to the reliability and safe operation of the equipment. In residential buildings, much attention is paid to the design of rooms. The electrical wiring in them is usually hidden inside the walls or created in an open way from exclusive expensive components that emphasize the individual style of the owner.

Buildings for technical needs, of which the garage belongs, are designed, as a rule, with a simple and open wiring diagram. Hiding it inside the walls does not make much sense: it’s easier to maintain and modify.For the vast majority of garages designed to contain one or two cars, single-phase power supply of 220 volts of industrial frequency is used. To create work lights and power outlets group ...

Home wiring is the heart of an apartment or private house. Wiring must be reliable and safe, and also fully meet the needs for the inclusion of household electrical appliances in the network. Very often, a number of errors are made during the installation of electrical wiring, which in the end can lead to various negative consequences.

In this article, we will consider the most common mistakes that are made during the installation of home wiring and the consequences that these errors may entail. The very first stage is the preparation of a power supply project. This project involves drawing up a wiring diagram taking into account the loads of electrical appliances, the desired locations of sockets, switches, lighting elements. In this case, the calculation and selection of protective devices in the electrical switchboard is also carried out.k, cables for electrical wiring lines...

When deciding on the power supply of a newly built building, its owner is faced with numerous tasks that need to be solved by technical and organizational methods. In this case, you should initially decide on the necessary number of phases required to power electrical appliances. Usually people are satisfied with a single-phase power supply, and a certain category selects a three-phase, guided by the tasks they face. When choosing a circuit, one should take into account its effect on the wiring design and operating conditions created by different systems.

There is a hope among individual homeowners that switching to three-phase power can increase the allowed power consumption and use electricity more intensively. However, this issue must be addressed in the sales organization ...

A power limiter is a device designed to limit the amount of power consumed. This device monitors the load and if it grows above the established level, it deenergizes the consumer. The operation of the power limiter is carried out with a time delay of several seconds to several minutes. That is, if the consumer includes electrical appliances in the network whose total power exceeds the set limit, then the relay will trip after the set time.

There is an LED on the power limiter that signals overload. Depending on the type of limiter, there may be a digital indicator on the current limiter, which displays the current power value, and if the set power limit (overload) is exceeded, a countdown occurs, after which the wiring will be de-energized ...

The metering of consumed electricity is carried out by measuring instruments that take into account the power passing through them for the estimated period of time. In order to correctly install and connect an electric meter, it is necessary to understand the principle of its operation, which consists in constantly monitoring such parameters as: the magnitude of the load flowing through the current measuring organ, the value of the voltage supplied to the input of the controlled electric circuit, and the connection time.

Any electric meter, regardless of its design, has: a terminal block on which electricity is supplied and simultaneously removed (input and output circuits), an internal circuit. When connecting the wires to the terminal strip, it is important not only to switch the phase and neutral conductors to their places, but also to observe the polarity: incoming and outgoing circuits ...