What to do if tension jumps in an apartment or house? The main causes of voltage drops in the network. Where to complain to solve the problem.
Permissible and maximum deviation of voltage in the network according to GOST. The effect of voltage deviation on the operation of electrical equipment. Ways to solve the problem.
What should be the voltage in the sockets according to the norms: 220 or 230 volts? Why is the voltage in the outlet not 220 volts? How many volts do electrical appliances need?
The flow of electric current through the human body is dangerous to health and life. In this article, we will consider why current kills and why high voltage is dangerous.
Learn how to determine power line voltage by appearance, number of insulators, labeling and other parameters. General classification of power lines by voltage.
High-voltage power lines in one way or another affect our health, plants and animals, communication technology, etc. But what exactly is the harm from power lines, read the article.
In simple words, we will consider how to protect yourself from electric shock when using direct and indirect touch in everyday life and at work. Basic measures and remedies.
What rules do PUEs violate most often and how to do it right, without violations. Responsibility for violation of electrical installation rules.
What is a voltage stabilizer, why is it needed and where is it used. The principle of operation of voltage stabilizers of relay, servo-drive and inverter type.
Insulated neutral networks are used to increase the reliability of high voltage lines and in hazardous electrical installations. What is isolated neutral, read the article.
Wind causes vibration of wires and lightning protection cables. This will damage the line. Find out what vibration and dance of wires are and what are the methods of dealing with it.
Why are high-voltage disconnectors needed, how are they designed and where are they used. Classification of high voltage disconnectors. How to do the switch.
How to recalculate electricity in previous years, due to a meter malfunction or in the absence of residents. What you need to know about light allocation.
What is unconditional electricity consumption and what responsibility is provided for it. Calculation of the cost of electricity bills without a contract.
What is an existing electrical installation in accordance with the rules of PTEEP and MPBEE. Definition of the concept and examples of the correct answer to the question in different situations.
What protective means are completing electrical installations with voltage up to 1000 V and higher. Overview of KSZ-1 and KSZ-2 kits that comply with the regulations.
How is the procedure for resuming power supply to disconnected subscribers and how much it can cost. Why can disconnect from power supply.
What to do if a high voltage is observed in the network of a house or apartment. Causes of increased voltage and ways to solve the problem.
What can be connected with the excess of the maximum power of electricity by the consumer, what are the consequences for this. Grounds for lifting the restriction.
How is lightning protection verification of buildings and structures performed. The methodology of the work, the necessary devices and the timing of testing lightning protection systems.
What is the maximum current protection, what is its principle of operation and purpose. Types and schemes of maximum current protection (MTZ). Unlike current cutoff.
What is the bounce of contacts, what are the causes of this phenomenon and why is it dangerous. Software and hardware methods for suppressing contact bounce.
Why arcing of contacts of relays, circuit breakers and magnetic starters occurs. Ways to eliminate and prevent sparking of the contact system.
Why did the phase disappear in the socket, switch or on the chandelier. The reasons for the situation when there is no phase in a single-phase or three-phase network.
What to do if appliances burned out due to a power surge in an apartment or house. Where to contact in case of emergency and how to recover damage.
The concept of power supply means a set of measures aimed at providing consumers with electricity. To do this, they use, in fact, the power supply system — engineering structures that perform the indicated task — the transportation of electric energy from a source to consumers.
In this section we will tell you about what the power supply system of private houses and apartments consists of, what equipment is used for this, and of course, how repairs and maintenance of engineering structures are made. We paid special attention to the topic electrical safety, which contains information about the most famous dangerous situations, both on high-voltage lines and within your own home.