Electric bell: device and purpose, installation tips and wiring diagram. Features of connecting an electric door wire bell with volume control. The principle of functioning of electric calls.

What is an RCD in electrics: description, varieties and features of choice. In what cases it is necessary to install an RCD in electrical networks. In some cases, the installation of an RCD is impractical. Calculation of the number of RCDs for installation.

PVC pipe for electrical wiring: wall thickness, vinyl, smooth, tough and non-combustible. Advantages and disadvantages of plastic pipes for laying electrical wires. Types and assortment of polyvinyl chloride pipes for laying wires.

Why LED lamps burn out: often, in a chandelier and in lamps. Influence of the quality of the LED bulb on the service life. How to increase the life of LED lamps. How to avoid frequent replacement of LED lamps in the apartment.

Width of the automatic machine 1 DIN: distance between DIN rails in a guard, GOST. What is a DIN rail and what is its purpose when installing differential circuit breakers. Features of mounting circuit breakers on a DIN rail.

LED characteristics: current-voltage, voltage, current and color temperature. How to find out how many volts an LED is. How varieties of LEDs exist. Classification of LEDs. Features of indicator LEDs.

Electricity consumption by household appliances: what consumes the most. How to calculate the power consumption, knowing the power of the device. Day and night time electricity consumption. How much electricity does an apartment consume on average?

Portable grounding: what it is and where it is used, equipment and marking. The procedure for removing portable grounding. What section of wire is necessary for installing portable grounding.

Alternative sources of electricity for a private home: do it yourself. An overview of the best renewable energy technologies for the home. How much can you save on electricity when using alternative electricity.

Why does the energy-saving light blink when the light is off: troubleshooting the mains. Common causes of blinking energy-saving light bulbs in an apartment in the off state. How to eliminate flickering in an energy-saving light bulb.

Electrics in the apartment: new building, drawing up a plan and a step-by-step algorithm. Why is it necessary to draw up a wiring diagram in the apartment. Features wiring electrical wiring in different rooms.