﻿ Power supply

Why are there power surges in the network and how to deal with them?

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.

What voltage deviation in the network is considered the maximum permissible

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: 220 or 230 volts?

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?

What still beats: current or voltage?

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.

How to determine the voltage of power lines: simple methods

Learn how to determine power line voltage by appearance, number of insulators, labeling and other parameters. General classification of power lines by voltage.

Are power lines harmful to human health and the environment?

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.

Measures and means of protection against electric shock

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 are the rules of the EMP most often violated and what responsibility for violations

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 regulator and what is it for?

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.

What is isolated neutral and where is it used?

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.

What is vibration and dance of wires, what do these phenomena depend on

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.

What are high-voltage disconnectors for and what types of they are

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 for electricity and what is important to know about it

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 threatens it

What is unconditional electricity consumption and what responsibility is provided for it. Calculation of the cost of electricity bills without a contract.

Which electrical installation is considered valid - the correct answer

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 equipment should be equipped with electrical installations

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 does the renewal of power supply occur

How is the procedure for resuming power supply to disconnected subscribers and how much it can cost. Why can disconnect from power supply.

Why there is a high voltage in the network and how to deal with it

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 threatens to exceed the maximum power of electricity

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 and by whom is the lightning protection test of buildings and structures carried out

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 overcurrent protection and what is its purpose

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 contact bounce and how to fix it

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 spark contacts and how to fix it

Why arcing of contacts of relays, circuit breakers and magnetic starters occurs. Ways to eliminate and prevent sparking of the contact system.

Why does the phase disappear and what to do in this case

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.

Where to go if home appliances burn out due to power surge

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.

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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.