How to fix the cable when installing wiring: methods and types. Features of fastening electrical wires to walls of various materials. You can attach the wire to the wall without drilling.

ShVVP wire: technical characteristics, design features and varieties. How to choose the cross section of the ball screw How to decipher the alphanumeric marking of the ball screw wire. Analogs of wire ШВВП.

Selection of the machine according to the cable section: calculation of the load and the maximum section. What data you need to know for the correct calculation of the required rating of the circuit breaker. Regulatory requirements for PUE.

Current stabilizer: circuit, adjustable, switching, design and purpose. Voltage and current stabilization module for 220V LED lamps. Types of current stabilizers for LEDs: on transistors and microcircuits.

Connection diagram of RCD and automatic devices: in an apartment or a private house. The basic principles of connecting RCDs and machines in the electrical panel. How many machines can be connected to one RCD 40a. How to install an RCD before or after the machine.

How to measure voltage: constant and pulse, multimeter and procedure. Devices for measuring voltage in the wiring of a household network. How to prepare a multimeter for measuring voltage in the network.

How to connect an LED to 220V: resistor, capacitor, connection methods. What type of connection of LEDs to the network is better to choose: parallel, serial or mixed. Connection diagram of LEDs to 220V.

Connection of wires in the junction box: circuit, twist and solder. What method of switching wires in the distribution box is better to choose. How many wires can be twisted in a junction box. Exclusion of the junction box.

Relay: purpose, design, designation on the diagram, methods of application and types. Types of electrical relays by the method of exposure and inclusion of the sensing element. The device of electrical and electromagnetic relays.

Wire cross section: concept, area, formula and diameter matching table. What is a cross section of a conductor. Correspondence of the diameters of the wires and their cross-sectional area. The procedure for determining the cross section of stranded wires.

Twisting of wires: devices, caps, copper and multicore wires. How many wires can be twisted in one twist. Is it possible to connect the wires by twisting according to the PUE. How to use a tool to connect twisted wires.