Construction And Repair

RCD 3-phase: purpose and principle of operation, device and connection of the device to the network Construction And Repair

Residual current device or residual current circuit breaker is an electromechanical device, carrying out automatic shutdown of electricity in the network when reaching differential current a certai...

AC power: formulas, components and application features Construction And Repair

In everyday life, as a rule, phrases such as power consumption or simply electrical power are used. The question of how much electricity a particular device consumes is always relevant. But in phys...

Electric current: what is measured and what it is, types of electric current and its application Construction And Repair

The first discoveries related to the work of electricity began in the 7th century BC. The philosopher of Ancient Greece Thales of Miletsky revealed that when amber rubbed against wool, it was subse...

Electric shock first aid algorithm Construction And Repair

A person can get an electrical injury when exposed to natural phenomena or household electricity. The consequences may be different depending on the discharge passing through the body. Often a pers...

What current is more dangerous and why: constant or alternating current, how to protect yourself from its negative effects Construction And Repair

Despite numerous scientific experiments and theoretical calculations, scientists still do not know which current is more dangerous. The inexplicability of some manifestations of electricity, despit...

Where and what is direct current used for, what it is and how it works, current sources Construction And Repair

Probably, every person learned from childhood that electric current is something from which almost all devices in the house work. Many people associate electricity with a bright lightning in the sk...

A device for measuring current strength: what is the name and classification, principle of operation and scope of application, choice Construction And Repair

In the 19th century, a special electrical measuring device was invented, which serves to record the strength of alternating and direct current in the network. The currently improved device for meas...

Electric shock: how a shock occurs, signs and consequences of electrical injury Construction And Repair

Electrical injuries occur in everyday life and at work quite often, because people are surrounded by a large number of devices. To avoid electric shock, it is necessary to know in as much detail as...

Parallel and series connection of conductors: theory, formulas, connection and calculation of current Construction And Repair

Almost everyone who was engaged in electricians had to solve the issue of parallel and serial connection of circuit elements. Some solve the problems of parallel and series connection of conductors...

Current strength: the unit in which the power will be measured, the electric charge and the theory of determination Construction And Repair

The strength of the current represents the movement of charged particles in a certain direction, in the taken conductor. Many physicists in the past were worried about the question: what is the cur...