According to unbiased statistics, more than two-thirds of all sold electric boilers account for accumulative-type units. And these devices, unlike flowing electric heaters, require regular preventive maintenance.

By the preventive maintenance of boilers is meant the removal of sludge that has fallen to the bottom, the replacement of the magnesium anode, and the cleaning of the surface of the heating element (TENA) from the scale that has formed.

As a rule, depending on the individual characteristics of your tap water, the frequency of preventive maintenance of a storage water heater is from one to one and a half years. Nothing difficult in the prevention of the heater is not observed. And now you will see for yourself. ...

Today, the light decoration of a room not only fulfills its main function, but also brings elements of comfort to the surrounding space. The interior will look more vivid and original if you arrange suspended ceilings in the shape of a starry sky. Such a ceiling will be a great alternative to the traditional lighting in your room. The star ceiling will decorate your room.

In addition, with the help of this design it is possible to identify the functional areas of the premises. So, you can separate the workspace from, for example, a recreation area.

Modern and most realistic "star ceilings" are usually made using fiber optic technology and microprocessor control. Consider the process of creating a "starry sky" ceiling using optical fiber and a projector. Tools and materials ...

New Years is soon! Christmas trees, toys, all kinds of lights ... cheer up. But how “happy” the situation is when we take the ingenious invention of mankind - the Christmas tree electric garland, plug it into the network, and it does not fully or partially work. What to do?

The easiest way to solve the problem is to go buy a new garland! But if you don’t want to spend money, believe in your strength and patience, then you can try to become a “resuscitator” of the New Year’s beauty.

Let's start with the fact that we recall: the simplest garland consists of a certain number of bulbs connected in series. With this connection, the operating voltage of the consumers is summed. And we can, for example, turn on 55 light bulbs rated for 6 V each into a network with a voltage of 220 V ...

At one of the facilities where I carried out electrical work on the “inside”, that is, the installation of the internal electrical wiring, I needed to find where the wires pass under the plaster.

The fact is that the client suddenly decided to make a suspended ceiling from drywall and its level was just located in the area of ​​the laid electrical wiring under the plaster. Unfortunately, the “unfortunate builders” have already managed to drill wiring in one place. I had to redo it. And to show them where to make holes for the dowel, I needed a device to detect hidden electrical wiring.

Unfortunately, such an instrument was not in my arsenal and I went to the store, hoping to get it there. The choice turned out to be small, or rather there was no choice at all ... Only a metal detector was available to detect pipe and current conductors ...

In the practice of housekeeping, it is often necessary to connect some devices or structures located near the house. Electricians call this process branching. For example, it can be a garage, a trading stall, a street lamp or just a canopy with lighting (a gazebo in the garden).

Let's try to consider various ways of creating a branch or in an understandable language for laying an additional electrical cable. According to established practice, the power line from which the branch will be made is most often air. In some cases, an underground branch is used. Air lines in most cases are more reliable, because their damage can be detected visually and, if so, they are restored much faster than underground ...

The typical designs of our residential buildings make residents think about the heat arrangement of their home on their own. Poor central heating, which is not enough in winter to heat a standard room, forces us to go for additional heating systems.

There are quite a lot of varieties of underfloor heating systems on the market, all of them have one drawback - the lack of a soft start, that is, an electrical load is added due to the closure of the relay coils, and, as a result, huge starting currents, voltage sagging. From such currents, the wiring wears out faster and, as a result, a fire is likely.

For modern warm floors, a control module is offered that monitors the status of the system and adjusts the floor temperature. Very convenient technology, which is also not without a drawback ...

The low reliability of Russian power grids is the reason for the failure of household equipment. In the system units of stationary computers, after the operation of the operating system is completed, despite the apparent inactivity, the power supply remains permanently connected to the network. In this state, he is at risk of exposure to power surges.

The use of network filters is corrected only by the fact that they have a shutdown button, which is more effective protection than the specified protective and filtering functions.

If you have installed a high-quality power supply of famous manufacturers and power exceeding 400 watts, then it is more reasonable to buy a new one may be an attempt to self-repair a failed power supply. First of all, you need to remember that the power supply is used ...

It is no secret that any wiring series without switches is defective. And although the switches are far from being the most popular mechanisms, comfortable wiring without their use would be more complicated and less interesting.

The main application, which is offered "from the manufacturer" (such schemes are present in many catalogs) is lighting control from several places. Yes, indeed - turning the bulb on and off from different points is very convenient, but the control process is not always straightforward with switches.

And the thing is this: lighting control in the apartment is a comfort function. Management should be clear and inconspicuous. Do not distract attention for simple actions ...