A separate outlet for the washing machine and the water heater at the junction of the aluminum wire with the copper one almost melted. What to do, change the wire from the shield?
In the cable, a weak voltage, the indicator is lit weakly. When the switch is turned on, there is no plus on the lamp in the hallway, but everything is fine in the kitchen. What is the reason?
The light is normally turned on by 1 key in the bathroom, but does not turn on separately in the kitchen - only 2 keys at once, together with the bath. What could be the problem here?
There is an EL-11E relay, you need to redo it so that when a voltage is applied to the relay input, after a specified time, the contacts are turned on and not turned off.
Why, when connecting three single-phase stabilizers to a three-phase network, the input circuit breaker knocks out?
When three stabilizers are turned on, the lead-in in the switchboard and two machines in the runway are knocked out without load. When you turn on one stabilizer, it works, with a load, too.
Moved the outlet on the wall. I bought the same wire, increased the wire, picked up the socket in a new place, I connect the plug - the device does not work. What is the reason?
What is really dangerous voltage at the upper setting, at which ignition of the motor windings occurs, electronic microcircuits, computer and household appliances.
I bought a new Thermex boiler. And on his TEN I found new lettering for phase and zero: not L and N, as usual, but A and B. What do they mean?
What is the resonance of currents and voltages in simple words. Conditions for the occurrence of resonance and the application of the phenomenon in practice. The benefits and harms of voltage resonance.
Hello. I bought an office, a panel room is located under it. Tell me, is it dangerous? And how can you measure electromagnetic radiation?
In the event of a short circuit on any group, the group and introductory automaton is triggered, i.e. the apartment is completely de-energized. Why does the introductory machine work?
There is a block: socket + switches.Is it possible for the kitchen to mount another type of switch (dimmer) in this unit or do I need to look for the whole unit with a dimmer?
Is a luminaire mounted directly on the ground mounted on some formwork? How to protect the junction of wires from water?
Workers offer to connect a chandelier to the 1st switch key, and to connect the spotlights to the 2nd key. How secure is this connection?
If you connect 1.5 V batteries in parallel, will only their total capacity increase or also the current? In theory, the current strength in parallel connection is summed up.
In one phase, a boiler, in another water heater, in the third, kitchen equipment and lighting. In summer, heating does not work. Possible summer phase imbalance?
Is it possible to conduct an electric cable under a concrete path? I understand that there is no ban, everything is at your own risk, but is this installation option allowed?
It is necessary to make ABP from a single-phase generator using a contactor. Which one to choose if the load is 20A? You need 2 normally open contacts and 2 normally closed contacts.
I install a 4.5 kW generator for a country house. Which cable is best used to connect the generator? The distance is about 10 meters.
On one 32A machine, a 3.5 kW oven, a refrigerator and a kettle connected to an outlet hang. Is this allowed or categorically not? thank
How to choose a cable for the current welding machine. The right choice of brand, cross-section and length of the welding cable. Useful tips for choosing a cable.
What classes of protection against electric shock exist in accordance with GOST 12.2.007.0-75. What is the protection of electrical appliances from electric shock.
During a thunderstorm there was a lightning strike in a street post, on it stood my shield at 220 V. Can a lightning strike damage machines and the shield inside the country house?
Simple ways to get 12 volts at home. Learn how to get 12 V AC from a 220 V household network or from 24 or even 5 Volts.