Hello! Tell me which cable to use for laying from an outdoor electrical panel to a home? And what section is needed from the PE bus to the ground electrode?
He turned off the light, and the lamps continued to burn, there was a burning smell, what should I do? Why the bulbs do not turn off the light switch.
The wall adjacent to the neighbor is heated. There are no pipes or household appliances. I suspect a wiring failure. Could this be the reason? What to do?
I can’t decide where to connect the zero, and where is the phase on the LEGRAND DX3. There is no marking on it as on other models. What to do and where to connect?
There are three current transformers 2000/5, I want to put 1500/5. Consumption 670kW, 380V. In the energy sales, organizations claim that I will pay more, is that so?
I connected the charger to the outlet, knocked out plugs. He opened a box with a counter and saw smoke, pulled out almost all the wires, had to break the seals. What will we do?
I can’t figure out how to calculate electricity consumption if 300/5 current transformers are installed? If I multiply the numbers from the scoreboard by 60, what do I get?
Knocks out the input machine when turned on. We checked the sockets, one was melted, the wires at the input also turned black. The socket was turned off, but it still knocks out.
I want to replace the wiring in the apartment and make an electrical panel. There were questions with the choice of cable cross-section, wiring diagrams and questions about protective devices in the electrical panel.
Is it possible to put a circuit breaker with an ampere rating at home like in a shield on a support, but should it work in the house earlier? How to ensure selectivity?
Where a direct current DC motor is used. Design, principle of operation and scope of this type of electric motor. Pros and cons of KDPT.
Hello! Is it possible to install a conventional switch on a wired doorbell as for lighting? Is it safe? Or is it better to buy a battery-powered wireless?
Bought an electric knife abroad. But they found that its power supply indicated INPUT 120V. Can it be connected directly to a 220V network? What is needed for this?
Status R.3.5.1904-04 for 2019. The use of ultraviolet bactericidal radiation to disinfect indoor air. Download the document in PDF.
The status of SANPIN 2.2.1 / 126.96.36.1998-03 for 2019. Hygienic requirements for natural, artificial and combined lighting of residential and public buildings.