In this article we will analyze in detail all the subtleties of the process of the device in the apartment of the new wiring. This work can be successfully carried out independently. But, before starting work, it is very advisable to objectively assess your real capabilities before starting, since installing electrical wiring in an apartment is a complex process and certain knowledge and skills are necessary for its successful completion.

Cable brand selection

1. Each core of the wire must be rigid (single core), because all sockets and switch are designed for installation with a hard wire.
2. The choice of brand of occasion. Three types of wire are mainly used: NYM, VVG, PUNP.
NYM cable is a cable with copper single-wire conductors with reliable triple insulation.
The first layer is PVC, the second layer is a rubber sheath, the third is each copper core in PVC. But this wire is not without flaws. It is not recommended to be placed in raw concrete and carried out outdoors, it has a large diameter and is quite expensive.
But, if you do wiring in the apartment and want something more reliable, then take, of course NYM.
VVG cable - a cable with copper single-core conductive conductors, with insulation from PVC plastic - value for money. It has double insulation: common PVC and each core in PVC. VVG can be laid anywhere: both on the street and in concrete. Isolation is slightly worse than NYM, but better than PUNP. If you do not need extra expenses, we select the simplest and most commonly used PUNP wire ...

The loss of performance of capacitors may occur due to:

i) a short circuit inside it;

b) a chain break inside it;

c) increase in leakage current;

d) decrease in capacity.

An inoperative capacitor can be determined using an ohmmeter, a special device for measuring capacitance, or a test circuit.

For a rough check of the suitability of capacitors, it is recommended to control them using resistance meters (ohmmeter, combined device - multimeter).

The verification procedure is as follows ...

Safe operation of the washing machine is paramount. To ensure this, it is necessary to organize the connection from the switchboard of a zero or ground bus with a cross section of at least 3 mm. In this case, the outlet should be replaced with a three-wire. The connection diagram is shown in the figure.

Often in apartments with a gas stove there is also a socket for an electric stove that is not used. It can be used to connect the washing machine, since the grounding wire is already in it. To do this, replace the socket for the electric stove with a standard socket with a grounding contact.

And we use an extension cord with a grounding contact.

I draw your attention to the fact that the ground wire must be insulated, it is strictly forbidden to connect it to heating radiators, water supply systems, gas supply systems ...

Loss of thyristor performance may occur due toand:

a) open circuit inside the device (combustion);

b) loss of controllability (combustion of the control electrode circuit);

c) loss of locking ability in the forward or reverse direction (breakdown);

d) breakage of conclusions.

An inoperative thyristor can be detected using an AC voltmeter, an ohmmeter, or a test circuit.

An inoperative thyristor in a circuit under AC voltage can generally be determined using ...

In the city of Livermore (California, USA) there is a unique light bulb, which was screwed in in 1901 and has since been on without interruption. This is an absolute record that entered the Guinness Book of Records. A webcam is installed in front of a unique light bulb at Fire Station No. 6, so the light bulb can be seen on the Internet. How was this possible?

It is known that the main face of light bulb burnout is the gradual wear of a tungsten filament. This filament is heated almost to the melting point of tungsten (3300 ° C), otherwise you will not receive intense light flux. At this temperature, the tungsten atoms in the crystal lattice vibrate intensively and some of them come off and go into space, settling on the walls of the flask. Gradually, the thread becomes thinner, and in the thinnest place the temperature goes beyond the melting point, the thread burns out.

Obviously, to increase the life of the bulb, it is necessary to install a thicker thread. But at the same time, to maintain the resistance of the thread, it is necessary to increase its length. A twofold increase in the diameter of the filament leads to an increase in the mass of tungsten by 8 times. And tungsten is an expensive metal, so current light bulb manufacturers are trying to save it.

But there is another reason for lamp wear, which almost no one knows about. The thing is...

Static electricity arises from the inequality of charges (negative and positive) between two objects. When discharged, a spark arises. This process causes an irritant effect on the human body, sometimes quite noticeable.

How to minimize this shock? We must not forget and adhere to the following rules:

1. Limit contact between moving bodies. The body is a static charge collection point (initially blocked, with no exit), free electrons are collected. This is especially observed with friction (feet on the carpet, etc.).

2. Place a layer of cotton between materials prone to conduct static electricity ...

The most common failures in the electrical circuits of electrical appliances and household appliances:
1) open circuit (resistance of an electric circuit is equal to infinity);
2) a significant increase in resistance;
3) a significant decrease in resistance;
4) short circuit (electrical resistance is close to zero).
Common causes of these malfunctions:
- breakage due to the aging of the elements, the passage of high currents, shock, vibration and corrosion;
- a significant increase in the resistance of electrical circuits compared to the nominal value caused by the aging of the elements, worseno contacts and contact connections, deviation of the parameters of individual elements;
- a significant decrease in the resistance of electrical circuits compared to the nominal value due to an increase in surface leaks and aging of the elements.
Short circuits are the result of breakdown of insulation, short circuits of conductors and elements on the housing and between each other (for conductors of different polarities and phases).

When troubleshooting, you need to know and be able to use the signs of proper operation of electrical equipment.
They can be divided into two main groups ...

Aluminum is one of the most convenient materials in construction practice. A little inferior in the strength of steel, it is much easier to process, has good electrical and thermal conductivity, and a beautiful appearance

However, the main problem that arises among amateurs when working with aluminum is its soldering. Just because aluminum does not solder. The reason for the impossibility of brazing aluminum by conventional methods is the ability in air to form oxide films very quickly (in fractions of a second).Therefore, previously developed technologies require either special mercury fluxes or special replaceable tips for soldering irons.

Most often, the need for soldering aluminum occurs when repairing resonant voltage stabilizers. In order to save, all windings of industrial network stabilizers are made of aluminum wire ...