Voltage transformer: classification, design and device. Features of the operation of voltage transformers in networks with isolated and grounded neutrals. Why do we need a voltage transformer.

How to connect LED strip to each other: connection methods and tools. Connection of LED strips with plastic connectors. Advantages and disadvantages of various types of LED strip connections.

Lighting in the bathroom: with a stretch ceiling, the number and arrangement of lamps. Fixtures in the bathroom on a stretch ceiling. The principles of the organization of lighting in the bathroom. The effect of lighting on the functionality of the bathroom.

Stretch ceiling with bulbs: lighting options in the hallway, hall and other rooms. What lamps can be installed in a stretch ceiling. Criteria for choosing bulbs for suspended ceilings in different rooms.

Pliers for stripping wires: device and purpose of the tool. Which wire stripper is best to choose. Technical characteristics of strippers. How does a stripper differ from a crimper.

Lighting in the kitchen: design, dining area, bar and island. Rules for the organization of lighting in the kitchen. Extra light design in the kitchen. What lamps are better to choose for lighting the kitchen.

How to connect the Legrand switch: with one and two keys, with backlight. Step-by-step installation instructions for Legrand circuit breakers. Wiring diagram for outdoor Quteo and Plexo light switches.

Phase control relays: circuit diagram, purpose and device. Advantages and disadvantages of the bias relay and phase rotation. Typical wiring diagrams for phase monitoring relays. Instrument setup steps.

Thermal relay: device, purpose, specifications and varieties. Design features of electrothermal relays. How to connect a thermal relay to a magnetic starter. Why do we need thermal relays.

Voltage stabilizer 220V: single-phase, automatic, switching and compensation. The purpose of voltage stabilizers 220V for the home. What is a double conversion voltage regulator.

Voltage converter: purpose, functions and applications. What is an inverter voltage converter. Classification according to the nature of the transformation, control method and type of circuit.