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 ...

In the vast majority of cases, when installing a hidden electrical wiring, one can not do without such a dirty and noisy procedure as gating.

Wires and cables must be hidden, but how to do it without a gate, if we just have a plain wall of concrete or brick? Moreover, the harness of these wires is sometimes more than impressive, especially in places connected to the apartment switchboard.

Strobing and laying of cable harnesses must be taken care of long before the final decoration of the room: it is when the apartment does not yet have a trace of furniture, no items, no wallpaper, no linoleum, nothing at all. In a word - bare walls, as in one famous TV show. On these bare walls, we determine and mark the route along which cable lines will run through us. Marking can be done with a construction pencil and level ...

Theoretical calculations and practical comparisons of various light sources, the use of LED lamps.

The issue of energy saving is still one of the first places in the family budget. One of the areas of economy is the economy of lighting. And here some progress has been outlined.

The news is associated with lower prices for LED lamps. Now these devices can be bought at a price of less than 300 rubles apiece, i.e. they came close in price to energy-saving fluorescent lamps that became popular among the people.

Compare different light sources. In order to understand what LED lamps can and cannot do, you need to compare how much light different types of lamps give out per watt of energy consumed, i.e. light output. The starting point for us will be an incandescent lamp, as the most famous standard ...

The device (in a few words), advantages and disadvantages. Lead-acid, nickel-cadmium, nickel-metal hydride and lithium-ion batteries.

Battery technology quietly and firmly entered our lives. Cordless phones, cell phones, cordless power tools, cameras, a variety of toys ... If all this received electricity only from ordinary acid or alkaline batteries, then a significant share of the budget of every Russian family would be spent on batteries. Therefore, you often catch yourself thinking: how did we even live without household batteries before?

Batteries are electrochemical devices capable of storing and delivering electricity. However, behind such a simple definition lies a wide variety of designs and principles of operation of various batteries ...

It should be noted that there is simply no clear and unambiguous separation of electrical wiring into hidden and open. There are two different opinions: some consider hidden only that wiring, the route of which is not visible, it is impossible to trace. At the same time, others believe that the wiring in the pipes and cable channels should also be hidden, since the cable is not visible, and it is mechanically protected.

We will not break copies on this subject. Let's talk only about the wiring, which everyone considers hidden. According to the method of laying the cable, it can be divided into wiring laid in the strobes, and wiring mounted under any sheathing. In one room, these methods of cable laying can very well be combined.

Well, and, of course, a number of requirements are imposed on hidden electrical wiring, each of which we will try to dwell on in detail. The first and most important requirement is the fire safety requirement ...

For those who often spend their holidays outside the city or live in the countryside, the problem of constant voltage drops in the power grid has long been known. She is very annoying because often leads to failure of both lighting and large and expensive appliances such as refrigerators, microwave ovens, air conditioners, etc.

There are many ways to deal with the unsatisfactory quality of the voltage in the mains, but probably the easiest is to install a voltage stabilizer. Such stabilizers are common house (high power) and local, i.e. low power for a specific device. If you have enough money, then an all-round stabilizer is preferable, because It protects your entire home, not just a specific appliance.

The first thing to do before choosing a stabilizer is to determine its power. Ideally, it should be 30 percent higher than the total power of all your electrical appliances ...

In previous articles, we looked at how to automate the process of starting gasoline diesel or gas generators. Generators are most often placed indoors. One of the important, and for someone rather complicated moments of installation of mini-power plants, is the problem of exhaust gas exhaust. In this article, we will demonstrate step-by-step how to remove exhaust gases from the generator.

So what we have. Generator gasoline KAMA (KIPOR) KGE 6500 E. As already noted, a very successful model. Value for money is just super))). Corrugation. As a corrugation we use a bellows to connect hot water. As practice shows, three years of successful work are provided, the corrugation easily tolerates high temperatures and vibration of the generator. The paste is a sealant. In this case, asbestos-cement paste was used ...

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

It is likely that 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 too 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? ...