GOST 15543.1-89: Electrotechnical products. General requirements for resistance to climatic external factors
The status of GOST 15543.1-89 for 2019. Electrotechnical products. General requirements in terms of resistance to climatic external factors.
GOST 8594-80: Boxes for installing switches and sockets
GOST 8594-80 status for 2019. Boxes for installing switches and sockets with hidden wiring. Download the PDF document.
GOST 14255-69: Electric devices for voltage up to 1000 V. Shells. Degree of protection
GOST 14255-69 status for 2019. Devices electric for voltage up to 1000 V. Shells. Degrees of protection. Download the document in PDF on the electro.tomathouse website.
GOST 10434-82: Contact electrical connectors. Classification. General technical requirements
The status of GOST 10434-82 for 2019. Electrical contact joints. Classification. General technical requirements. Download the PDF document.
Can zero burn out due to grounding of the battery outlet?
The management company accuses us of having a battery outlet grounded in the bathroom. Could this affect the burning of “zero” in the driveway?
How to connect wires to the light switch?
Good afternoon, the electrician laid the wiring, I wanted to connect the light switch and the lamp myself, but phase, zero and earth are sticking out of the wall. How to be in this case?
Can I connect a 3 kW oven and a 7 kW hob to one line?
Hello! Is it possible to connect the oven to one cable with an electric stove if its cross section is 6 mm²? Or is it better to connect to the line of the washing machine?
Why did the wire of the new lamp turn green and is it dangerous?
Hello! The sconce worked normally for 2 months, was removed during the repair and found that the sheath of the wire turned green. Why did this happen and what to do?
How to connect Rbuz D25t with RCD and automatic machines?
How to connect the Rbuz D25t voltage relay to automatic machines and RCDs, or first, RCDs, then the machine, and then the relay? The instructions indicate the second option.
What relay is needed to operate the compressor control circuit?
Which pressure switch should be used to automatically turn on the compressor when the drawdown is up to 2 atm, and turn off at 10 atm. If possible, explain the scheme of work.
Wire connection in an electrostatic smokehouse
I make an electrostatic smokehouse with my own hands, I ran into a problem: how to branch the high-voltage wire into 3 and how to connect them to the electrodes of the smokehouse?
What is a brushless DC motor, how is it built and running
What is a brushless DC motor, what is its working principle, types and device. The scope of BDTT, their pros and cons.
Why does the voltage sag when turning on appliances in the house?
I have a 3-phase input of 15 kW. When the heater or the kettle is turned on, the voltage in this phase drops to 140V, on the others within 220-230V. What is the reason?
What power supply to choose for the LED strip RGB 21 and 25 meters?
Hello! I want to order an RGB LED strip, I wanted to know which transformer is needed and which RGB controller. The length of the tape segments is 21 meters and 25 meters.
Can a shunt trip be used instead of a voltage relay?
Hello! Is it possible to use an independent trip of min and max voltage to protect household appliances instead of relays? Or is a voltage relay better?
The two-key switch does not work correctly - what should I do?
Good afternoon. There are 2 lighting groups. They are connected to a two-gang switch. When you turn on any of the keys, both groups light up. What to do, where to look?
How to connect the bath to electricity from home?
I have 3 phase input, built a bath and I want to lay 2 phases on it. You also need to make grounding, tell me how to correctly and correctly do everything?
The correctness of the wiring in a wooden house
I connected the wooden house to electricity and laid the wiring. Check for correct solutions. Installed such machines: input 40A to the AVVG cable 10 mm².
Why does not half of the sockets in the apartment work?
Half of the outlets in the apartment have voltage problems. It is, but when the washing machine is connected, the machine knocks out. In other outlets everything works fine.
Why did the light disappear in the apartment after turning on the iron?
When I inserted the iron into the socket, sparks flew from it, I heard a pop. After that, the light went out. Corks included, but the light never appeared. What is the reason?
Can I connect an electric stove in the country?
Is it possible to install the old Soviet electric stove "NINA" with three burners in the country? Interested in how safe it is and how to do it right?
How to turn on the chandelier and sconces from different places in the bedroom?
The bedroom has a chandelier, sconces and switches at the entrance and near the bed. It is necessary that at the entrance and on both sides of the bed it would be possible to turn on and off both the sconce and the chandelier.
Is it possible to connect a three-phase relay RKN-3-16-08 to a single-phase network?
There is a three-phase voltage monitoring relay RKN-3-16-08. Can it be connected to a switchboard with single-phase input? If so, tell me the correct connection diagram.
Why does the TV turn off when connecting the console via HDMI?
I connect the PlayStation prefix via HDMI, after turning on the TV it works for 2 seconds and turns off, what should I do? Without a prefix, everything works fine.
