How to choose a lamp when designing lighting?
I am a novice designer, it is difficult for me to choose lamps in different rooms (first-aid post, theater, gym, etc.), how to choose lamps? What to look at?
What to do if wires fall out of the light switch?
The light switch hit, it is a two-key, one of the keys stopped working. I took it off and saw that the wire fell out of the terminal block. Where to connect it now?
What to buy for connecting a single-phase electric motor?
We rewound the three-phase AOL-21-4 motor into a single-phase with a starting winding. To start, you need a capacitor, what else is needed to connect it and use it as a sharpener?
Which frequency converter to choose?
How to choose a single-phase frequency converter for a three-phase electric motor? How to connect the motor with a star or triangle?
What should be the voltage: 220 or 230 volts?
What should be the voltage in the sockets according to the norms: 220 or 230 volts? Why is the voltage in the outlet not 220 volts? How many volts do electrical appliances need?
Is it possible to connect a 6 kW heater to a 110 volt network?
I want to connect a heater for a 6 kW sauna. But when it was turned on, the corks were knocked out. What to do? Is it possible to connect such a heater to a 110 volt network?
Why do remote lifters turn off during remote load disconnection?
There are 4 remote control panels. When you turn on and off the load right in the switchboard, everything is in order. With remote shutdown, the difavtomat works. What is the reason?
Why does the electric meter wind up a lot?
An electric meter winds 900 kWh per month. Installed electric heating, for such indications even if the boiler is operating at minimum power.
How to exclude the simultaneous inclusion of several consumers (how to replace the load priority relay)?
Installed 3 sections of underfloor heating with a total capacity of 8 kW. How to exclude the simultaneous inclusion of all three zones? Relay ABB LSS1 / 2 is very expensive.
Proper grounding of SDR receivers
A portable smoke exhaust must be connected. According to SP 60.13330.2016, it relates to SDR power consumers, and the requirements of the codes of fire safety rules apply to it.
Help make a diagram of the distribution panel
In the summer we are going to build a small house, on a plot of 60 square meters. m. and designed an electrical panel for him. Please help with checking the correctness of the scheme.
What still beats: current or voltage?
The flow of electric current through the human body is dangerous to health and life. In this article, we will consider why current kills and why high voltage is dangerous.
Why does the two-key switch work incorrectly?
I moved to the apartment and the lighting did not work in it, I tried to eliminate it myself, now the light in the bathroom is on only when the light in the hallway is turned off.
How to charge the battery from a motorcycle?
What current should I set when charging the battery at 12 V and 4 Ah? How long does it take to charge and with which charger?
How to deal with low voltage in the country?
The house is in a summer house cooperative, the power supply is weak and the voltage drops very much up to 100 V. The stabilizer turns off. How can you increase the voltage in this case?
Why does the meter wind up kilowatts without load?
Installed light bulbs, when I went to the counter in red division the scoreboard was between 0 and 1, when I arrived - 6. Where did the 500 watt come from?
How to determine how much a neighbor wound on my counter?
The neighbor connected the electric boiler to zero of my meter, I'm going to sue. How to find out exactly how much did his boiler count me on the meter?
How to extend the life of an incandescent lamp using a diode?
In order for the incandescent lamp to last longer, it can be connected via a diode. Which diode to choose from domestic and foreign? Will KD226, KD245, 1N4007 fit?
Can I connect a washing machine to a 15A extension cable?
There is a Japanese connector with the characteristics of 125-220V 15A. It is necessary to make an extension cord with a switch. The question is - will he pull a 2300-watt washing machine?
How to protect cables and wires from UV
The main methods of protecting cables and wires from ultraviolet radiation, as well as methods for restoring insulation. What is said in the PUE.
Where does the gas pipeline come from?
The boiler began to smoke and knocked out an automatic machine, on the boiler, the grounding conductor melted, turned off the gas pipeline - there was no smoke and short circuit. Reconnected the gas pipeline, the situation repeated. What to do?
How to change the cartridge in the chandelier?
The E14 cartridge cracked in the chandelier, I wanted to buy a new one, but there were only cartridges with M10 thread in the store, but I have M8, what should I do in this situation?
How to connect a switch to two lamps?
Tell me how to connect two bulbs to one single-key light switch, how to lay and connect wires correctly?
How to make a digital TV antenna yourself
DIY DVB-T2 antenna manufacturing instructions. Schemes of Kharchenko biquad antenna, homemade wire and beer cans.
