In general, the question posed in the title is somewhat provocative. Even in technology, there is practically nothing clearly “right”. But then there are frankly erroneous technical solutions. To avoid them, we will try to consider in detail the air input device with the help of a modern and gaining popularity SIP.

Why SIP? So, SIP is a self-supporting insulated wire. He replaced the usual uninsulated stranded aluminum wire, which to this day can be observed as part of the overhead line of the private sector in many regions of our country. Uninsulated wire was used earlier simply because of the lack of reliable insulating materials that can serve in harsh outdoor conditions ...

The owners of small-sized Soviet-built apartments are hardly familiar with a similar problem. They are used to the fact that sockets are located on the walls. Well, in fact, where else? On the wall it is both accessible and safe - it will not flood with water and no one will kick or step with a foot.

But imagine some room in a luxurious country house with an area of ​​100 square meters or more. Let us suppress the impulses of, of course, white envy (and, perhaps, sincere hatred of luxury?) And imagine, let’s say ... a synthesizer.

Needless to say, the idle extension cord stretched to the instrument from an outlet in one of the walls will completely destroy all the pathos of the interior in such a situation? And how to power this damned synthesizer? The only solution that may come to mind is a wall mounted socket ...

About cases when the lamp constantly burns in the same lamp. On high starting currents in incandescent lamps, on transients and briefly on how to solve the problem.

The flip of a switch: a light flashes in the toilet, momentarily illuminating the modest interior of the restroom, and that’s all. The light was bright, but not for long. Having figured out in the twilight with your natural needs, drag the stool, unscrew the affected lamp. She, of course, can no longer help. We screw in a new lamp, throw the incident out of our head. And the next day everything suddenly repeats: a click, a flash, and the sudden death of a lamp.

What a disaster! Maybe the lamps are unsuccessful, defective? No way - in the corridor it burns exactly the same and without any excesses. Remembering in vain both Ilyich and Edison, we stock up on light bulbs and reluctantly weary our entire supply ...

Getting hit is very unpleasant. And the most painful are blows from those from whom you do not expect aggressive behavior, who, on the contrary, are called upon to create coziness and comfort in your home. For example, how do you like it if your washing machine starts to fight?

Meanwhile, when included in a two-wire line, this is possible even for an absolutely functional washing machine. The reason is the features of the built-in mains filter located at the input of electrical power. The filter consists of two capacitors with a common point on the machine body. One capacitor connects the housing and the phase wire, and the other connects the housing and the neutral wire.

Manufacturers of modern washing machines naively believe that their creations will be included only in a three-wire electric network with a separate ...

A conventional switch is not suitable for switching on a load of 2 kW or more. The article talks about how to solve this problem.

What needs to be done to turn on the light bulb? Just flip the switch. Nowhere is easier. Well, what needs to be done to turn on the five-kilowatt boiler? Also click the switch? Alas, if this switch is connected directly to the power circuit, then it will exist for a very short time. His contacts are designed for a maximum of 10 amperes maximum. Even if you consider that the switched load is purely active and the power factor is close to unity, these 10 amperes will amount to only two and a few kilowatts for a single-phase load.

Not really something and you will run into such a reserve for power. And what to do? After all, power consumers with a capacity of more than two kilowatts are not so rare in everyday life ...

We all know, torn where thin. The same is true in the electric circuit - in emergency conditions, the breakage occurs primarily at the junction of the wires, and not in the wire itself.

This happens due to the appearance of transition resistance at the junction of the wires, therefore, the better the contact, the lower the transition resistance, the more reliable the electrical circuit. In home wiring, probably in 90% of cases, connections were previously made by bundles of wires followed by soldering or welding, but often just like that.

Sometimes used and bolted connections, terminal clamps. But science does not stand still and self-clamping terminals were invented to help electricians, now they are also called Wago clamps. Work has become easier, more fun, when you disconnect in the electrical distribution box, know how to insert wires into the terminals ...

The causes of energy losses in overhead lines and ways to deal with them, based on practical experience.

Probably, everyone who has a house in the village, lives in the private sector in the city or builds his own house, over time, will face the problem of instability of the electricity network. This is expressed in sharp surges, problems of protection of electrical appliances during thunderstorms, long periods of very high or very low voltage in the mains.

Many of these problems are associated with the features of overhead electric lines, others, with the failure to comply with the elementary rules for laying lines and their maintenance. Unfortunately, in our country, the slogan: "Saving the drowning people is the work of the drowning people themselves" is being increasingly implemented. Therefore, we will try to consider these problems and how to solve them in more detail. Where do the losses come from in electrical networks? ...

When planning lighting, we want it to be even. Of course, we want the light not to be too bright, so that it does not cut eyes, does not distort colors, and does not interfere with perceiving the surrounding reality.

All problems are eliminated using spotlights. High-quality and even lighting of the working area of ​​the kitchen, soft and soothing light in the recreation area, lack of darkness and comfort for the eyes - all this is fully possible using this special type of fixtures.

The popularity of spotlights is constantly growing, their diversity is becoming increasingly widespread, and each electrician already has his own specific set of knowledge and skills that help him quickly and efficiently install the so-called “lighting points”. Spotlights are recessed fixtures. This means that they can only be installed on hollow structures ...