3 ideas for building a passing light switch
3 ways to make a light through switch do it yourself. How to assemble a loop-through model of a switch from a conventional push-button switch, intermediate relay
What are stray currents and how to get rid of them?
The causes of stray currents, the danger of this phenomenon and measures of protection against it. Methods and devices for measuring stray currents in the ground.
Review of the robot cleaner Cleverpanda i5
Overview of the technical characteristics of the Cleverpanda i5 robot vacuum cleaner. The advantages of the new model compared to competitors.
The right choice of current transformer for the meter
How to choose a current transformer for an electricity meter. Table and formulas for choosing a transformer for load current and power.
How does undervoltage protection work?
What is the protection of the minimum voltage, what is its principle of operation and purpose. Which devices are used to protect against minimum voltage.
RCD connection diagram in a three-phase network
Consideration of schemes for connecting a three-phase RCD to a network with grounding. How to connect a four-pole residual current device.
What is an electric network overload and what is it dangerous?
The causes of the overload of the power grid and the consequences of this phenomenon. Basic measures of protection against overload in the network of a private house and apartment.
Characteristics of heat-resistant wire PRKA
Technical characteristics of the wire PRKA. Section table and interpretation of the marking of the heat-resistant conductor. Scope of a wire of the PRKA brand.
Maximum permissible current in the wire PV-1
What is the maximum permissible current for the PV-1 wire. The wires are marked - PV-1 * 2.5 mm; PV-1 * 4 mm; PV-1 * 1 mm; PV-1 * 0.75 mm. Thank you in advance.
Which PWM speed controller is better?
There is a revolving motor - a DC 12V, 4.3A fan. It works like a hood, you need a PWM speed controller. Which is better to choose?
What are garden colored lanterns called?
Hello! What are garden colored lanterns called?
Damage to the shield on the stairwell
The smell of ozone air is heard on the stairwell. There are no melted wires in the shield. The smell of ozone air disappeared during lunch hours. What is the reason?
How to make heating in a country house?
What are the options for heating systems and what are the advantages of each of them. How is the installation of heating in a turnkey country house.
Tests on artificial and natural lighting
Online tests on artificial and natural lighting, as well as room lighting. Testing knowledge of electric lighting.
Help solve the problem with the generator
I decided to make a reserve, put the ABB circuit-breaker and energized one phase in case of a power outage. How to make zero on the generator?
Duplication of the ground wire from the apartment panel to the floor
To create a DCESS in an apartment, is it necessary to duplicate the ground wire from the apartment panel to the general floor?
Why does the lamp in the spotlight go out after heating?
After turning on the mains, the lamp lights up and begins to heat up, and after heating it immediately goes out and does not turn on until it cools down. What is the reason?
What is a current leak and how to find it?
The causes of current leakage in the apartment and measures of protection against it. What is the danger of current leakage in the wiring and how to find it.
Check with a megger household wiring
What is the minimum indicator in Omaha for home, household wiring? A 500 Ohm number is spinning in my head. I have a megaohmmeter at 2500 V.
How to connect wires with WAGO terminals of different series
Step-by-step instructions on how to use the terminals WAGO 221, 222, 773 and other series. The correct connection of the wires with the terminal blocks of the car.
Choose a dimmer - what to look for?
How to choose a dimmer by power, type of lamp and design. Tips for choosing a dimmer for LED bulbs, incandescent, fluorescent and halogen.
The plug on the heater caught fire
The plug on the water heater caught fire, how do I know if it works?
Why do you need a zero bus in the shield and how to connect it
What is a zero bus and why is it needed. The device, purpose and characteristics of zero tires, which are installed in the shield.
Connect the hob and oven to one cable
How to connect the hob and oven (independent) to one 3x4 cable and is this possible?
