Three-pole circuit breaker: field of application. Rated breaking capacity of three-pole machines. Features of the use of three-pole circuit breakers. Time-current characteristics.

Voltage stabilizer for the apartment: in the dashboard, selection criteria and parameters. Varieties of apartment voltage stabilizers. How to choose a voltage regulator for power, accuracy or range.

How to test the relay: the procedure for checking the tester. Features of checking the four-contact relay for operability with a multimeter. Abnormal values ​​on the multimeter. Testing contact groups of a five-pin relay.

Tips for crimping wires: types of sizes, marking and pin. Why do I need ferrules for crimping wires. How to crimp lugs for wires: crimping rules. Pin lugs for wires.

How to make wiring in the bathroom: scheme, combined bathroom. Safety requirements when installing electrical wiring in the bathroom. The sequence of work when laying the wires in the bathroom with your own hands.

25 amp machine: marking, operating principle, device and application features. Characteristics of 25 amp three-phase circuit breakers - designations on the case. Where is the c25 rifle used.

Day-night sensor: device, technical specifications and principle of operation. Features of setting an automatic time relay for lighting on the street. Connection diagrams of the day-night sensor for street lighting.

DIY generator: advantages and disadvantages of a home-made device. Types of home-made electric current generators and features of their application. The order and assembly diagram of the generator.

Power supply for LED lamps: classification and design features. What is the difference between the power supply for LED lamps and the electronic transformer for halogen lamps. Schemes of power supplies for LED lamps.

LED strip power: calculation for transformer and safety factor. How much energy the LED strip consumes. How to determine how much power an LED strip consumes per meter.

What AWG stands for in cable marking: a history of occurrence and distribution. In which countries is the AUG caliber used. How to convert cross-sectional area from AWG to mm. Features of the use of AWG cables.