Wire PV-1: installation, mechanical and electrical parameters, scope. Features of the execution and modification of the wires PV-1. Design features of the installation wire PV-1. Nomenclature of wires PV1.

Wiring diagram for voltage relays and RCDs in single-phase and three-phase networks. Low voltage relay switching circuit. How to install a voltage relay in the shield with your own hands. Why do I need a voltage regulating relay.

How to connect an LED lamp: mount, network connection diagram. Connection rules and technical recommendations for installing LED lamps in the apartment. What is the best way to connect LED lights to the network.

How to connect the LED strip with your own hands: power supply, cable, circuit. Wiring diagram for the power supply for LED strip 12V. How to cut and join segments of LED strip. Switch for LED strip.

Induction electricity meter: description and principle of operation, pros and cons. Is it necessary to replace old induction energy meters with new ones. Varieties of old mechanical electricity meters.

Socket with grounding contact: technical parameters and types. Two-pole plug sockets with grounding contact for open and hidden wiring. Features of ground outlets.

How to use an indicator screwdriver with LED. How to check phase and zero with an indicator screwdriver. Indicator screwdrivers to detect hidden wiring. The principle of operation of the indicator screwdriver with LED.

PUGNP wire: description and specifications, replacement and design. Why the PUGNP wire is prohibited to use. Operating conditions and service life of PUGNP wires. Mass-dimensional parameters of the PUGNP wire.

Wire for intercom: two-core, connection in the entrance through the shield. Features connect the intercom handset in the apartment to 2 wires. On-door speakerphones with the on and off button. Cable requirements for connecting a video intercom.

Interphase closure: concept and varieties. Methods of protection against interphase circuit in single-phase and three-phase circuits. Causes of interfacial faults. How to prevent interphase short circuit.

Three-phase meter Mercury: description, main and additional functions. Varieties of three-phase electricity meters Mercury: two-tariff, direct connection. Direct and semi-indirect connection.