The principle of operation of the LED: white, yellow, cluster, of which the design is made. The history of the emergence and development of LED lighting. How the LED is arranged and what material it is made of. How many volts are LEDs.

Wiring diagram for a two-gang switch: in a junction box, with 3 wires. How to connect a two-gang switch to two bulbs. How to put a double light switch with an indicator. How does the two-key switch work?

Static electricity: means and rules of protection, causes and harm. How to deal with static electricity at home. What to do to not beat with static electricity. The benefits and harms of static electricity.

Wire termination: what is it, PUE, soldering, technology and types of lugs. Why do you need to terminate cable cores. The main mistakes in crimping joints. Preparation and conduction of wires.

Timer circuit: instructions for self-production at home. Advantages and disadvantages of a home-made time switch for turning devices on and off. The principle of operation and device time relay.

Do-it-yourself electric drive for gates: features of choice and installation, elements. Tools and materials necessary for self-installation of automatic swing gates. How to make automatic swing gates with your own hands.

What is an electronic transformer and where is it used. Electronic transformer: circuit, principle of operation, alteration and device. How to convert an electronic transformer for halogen lamps into a power supply.

Wire PV-3 1x6: yellow-green, differences from PUGB, cross-section and marking. The design of the wire PV-3 1x6. Electrical and mechanical characteristics of the PV-3 wires. Current loads of the PV-3 wire. GOST and design differences.

Serial connection of bulbs: circuit, mixed connection, pros and cons. How to connect several bulbs to one wire. Schemes of series and parallel connection of lamps. Types of lamps and wiring diagrams.

Temporary power supply to the construction site: scheme, design, PUE, SNiP. Temporary wiring requirements for a construction site. Sources of energy supply for construction sites. The stage of connecting to the power grid of the construction site of a private house.

How to conduct electricity to the balcony: socket, lamp, electrical safety requirements. What is the best way to lay electricity for a loggia: open or closed. Which wire is better to choose for electricians on the balcony.