Can I connect a 12V headlamp from an 18V battery?
Hello, can I connect a 18V lithium-ion battery to a 12V motorcycle headlight? Thank.
2 light switches in 2 different rooms suddenly stopped working
At different times of the day, two light switches in different rooms stopped working. The wiring is old, the lights are in good condition. Where to look for a problem?
GOST 30331.10-2001: Selection and installation of electrical equipment. Grounding devices and protective conductors
Status GOST 30331.10-2001 (IEC 364-5-54-80) for 2019. Electrical installations of buildings. Selection and installation of electrical equipment. Grounding devices and protective conductors.
GOST R 53769-2010: Power cables with plastic insulation for a rated voltage of 0.66; 1 and 3 kV.
The status of GOST R 53769-2010 for 2019. Power cables with plastic insulation for a rated voltage of 0.66; 1 and 3 kV. Download the document in PDF format.
What is a star and a triangle in an electric motor
The star and the triangle are the two main schemes for connecting the motor windings. Find out the difference between the two connection methods and how to choose the right one.
Is it possible to ground in the apartment to the elevator shaft?
Cases of zero burning in the ASU of an apartment building became more frequent. I want to connect the grounding of the apartment to the elevator shaft, can this be done or not?
How to connect a single-phase motor through a 380V chastotnik?
Hello! Is it possible to connect a single-phase motor to a three-phase frequency converter (380V), if so how? Chastotnik of the PR6000-0040T3G series.
How to connect a welding machine to a 220 volt network?
I want to buy a welding inverter for 200A, they write that it needs a 32A socket. How to connect a welding machine to a 220 Volt household network?
GOST R 55706-2013: Utilitarian outdoor lighting. Classification and norms.
The status of GOST R 55706-2013 for 2019. Outdoor utilitarian lighting. Classification and norms. Download the PDF document on the our.electricianexp website.
GOST R 54945-2012: Buildings and structures. Methods for measuring the ripple coefficient of illumination
The status of GOST R 54945-2012 for 2019. Methods of measuring the ripple coefficient of illumination. You can download GOST for free on the our.electricianexp website.
Why is the meter constantly turning off?
The counter itself turns off, the machines do not work. After turning the machine off and on, the light appears, and after a while the counter switches off again. What is the reason?
Can I connect a welding inverter in the country to an aluminum cable?
Can I connect a welding inverter with a rated current of 25A to a cable with aluminum conductors with a cross section of 4 mm²?
What to do if computers often burn out at night?
Often computers burn out, even when running on an uninterruptible power supply, as well as other equipment, such as brains of air conditioners. Most often this happens at night. What to do?
Novelty of the season - panel radiators Royal Thermo
Overview of the new Royal Thermo steel panel radiators. What are the features of the Compact, Ventil Compact, Hygiene and Ventil Hygiene series.
Can a washing machine show an electric shock in a shower through water?
In the next room from the bathroom is a washing machine. Can an electric shock occur in the event of a malfunction if during this time they take a shower and operate the washer?
Why does the light disappear in only one room?
The room has one switch and an outlet, no problems with the outlet! And from the switch the bulb turns on. Periodically the light disappears, what is the reason?
How to connect a three-phase motor for 220 and 380 volts - overview of schemes
How to connect an 380V asynchronous motor to three phases and to a single-phase 220V network. Typical schemes for connecting electric motors and the principle of their operation are described in the article.
How to install an accounting shield on a support without breaking the rules
How to install a metering board on a support according to the PUE. What are the requirements for installation and how to properly ground the shield. Organizational matters.
Overview of the multimeter VAR-M01-083
Overview of the characteristics and operating principle of VAR-M01-083. Connection diagram of the multimeter to the electric network. The scope of this unit.
What is an induction motor and how does it work
What is an induction motor and what types of this type of electric machines are. A simple explanation of the design and operation of induction motors.
How to connect wires in a hotplate?
Hello, the cord (H05RN-F 3G0.75mm²) of the electric stove has damaged insulation. Is it possible to use this type of cable for it and how to connect it to the wiring of the tile?
What cable to pull from the pipe entry into the house?
Assembled a three-phase shield. The question arose of how to lay a line from the pipe rack to the house and cabins. There is a self-supporting insulated wire, I wanted to lay it, how to make a branch to the cabins?
How to connect a group of spotlights in a stretch ceiling if there is no access to the distribution box?
After installing the stretch ceiling, there is no access to the distribution box, so the question is: how to connect the spotlights to a double switch without zero? Can I take it from the outlet?
How to connect the DVR to the rear view camera?
There were problems connecting the rear view camera to the DVR, it does not display an image when reverse gear is engaged. What to do?
