How to ring the connector. How to ring the wires: consider the options

On the subject of integrity lived. The need for such a procedure may arise at any second. Your phone may stop working for a variety of reasons. For example, as a result of land work on the site, the movement of furniture in the house or after a thunderstorm. Also, the need for ringing may arise during electrical installation work - for example, when marking wires and cores, checking insulation. In any of these cases, it is important to know how to ring the telephone cable.

How to check the cable for a break?

You can ring the telephone cable in several ways - for example, using a special transformer, ohmmeter, megohmmeter, etc. However, the handset is best suited for these purposes. Such a device cannot be called either a tool or a device. However, telephone operators most often use just such a handset. It is easy to use and mobile. This special handset can be bought at a store or made independently on the basis of a handset from an old rotary or push-button device. But how to check the telephone cable for a break using such a tube?

Measurement of the capacitance of a telephone cable should be carried out in the following order:

Invite an assistant.
. Determine the common vein. This is any colored core, for example green. From there, you need to start calling. Relative to this vein, all other veins will be called.
. Connect one clamp of the main tube to this green core, and the other to any other core you are looking for.
. Connect one clamp of the auxiliary tube to the green wire (on the other side of the cable). Using the second clamp, switch over all the cores in turn. Find the core to which your assistant is connected.
. When you connect the auxiliary tube clamp to the desired core, you will hear crackling, clicks. This suggests that a closed circuit has arisen between the desired and the green vein.
. Through the tube, talk with an assistant about how you will mark the found vein. It is necessary to put labels with markings on both sides of the core. Prepare them ahead of time.
. Then repeat everything that was described above, as many times as there were lived in the cable.
. If a break is not detected, then press the whole wires with the help of NShVI sleeve lugs and insert them into the terminal block.

What to do if there are no colored veins?

How to check the telephone cable for a break if there are no colored cores? Here you can start measurements from any core. You need to do the following:

With one clamp of the main tube, connect to the desired core.
. Connect the second clamp to ground. If the cable is armored, then its armor can be used instead of the "ground".

All. Now you know how to ring a telephone cable. By making a call, it will be possible to talk with a partner at a distance. You can, for example, specify the color of the veins. The cable can be between different rooms or buildings. You do not have to go from one place to another, which is certainly convenient.

Knowing how to check the phone cable will help you quickly determine what is causing the phone to not ring. This will allow you to take the right action in a timely manner and establish communication.

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When an electrical appliance suddenly stops working, its owner has a desire to independently deal with the malfunction and fix it. To do this, you need to verify the integrity electrical circuit, quality of connecting connecting, serviceability of switches, switching devices and other elements.

Such a test consists in measuring the electrical resistance of the circuit. In the language of electricians, it is called "dialing".

How resistance is measured

Testing the resistance of any electrical circuit is based on the action through which the current is passed and. A stabilized voltage is applied to the input of the circuit under test. Usually, chemical current sources are used for this:

galvanic batteries;
accumulators.

Less commonly used rectified voltage from the AC mains.

If the circuit is intact and there are no breaks in it, then the current will overcome the impedance of the circuit, and its value will be expressed by the ratio I \u003d U / R

The simplest devices used by electricians to test resistance are called "diagnostics". They are made according to the scheme below.

To one end the batteries are soldered from a flashlight, and to the other a flexible electrical wire insulated with a crocodile clip at the end. A copper wire of 2.5 squares is attached to the second contact of the light bulb, which acts as a probe.

If you put a crocodile on the probe, then the continuity circuit will close and current will flow through it. Its value is sufficient to heat the filament and light the bulb. The brightness of the light depends on:

battery condition (with a large discharge, the voltage decreases);
the resistance value of the circuit section.

If a resistor is placed between the probe and the crocodile, then the value of its resistance will affect the decrease in the glow of the light bulb. For example, a filament current rating of 100 mA is generated when connected directly to a new battery. When, when checking the resistor, the current drops to 80 mA, the glow will be clearly visible. With a significant increase in resistance or a break in the circuit, the bulb will go out.

With such a simple method, electricians check the integrity of wires and other sections of the circuit with a resistance value of up to several tens of ohms. During these measurements, there should be no voltage from extraneous sources in the circuit under test, which may be:

charged capacitors;
pickups from neighboring electrical devices;
parallel connected chains with their own power supply.

Attention! The principle of the absence of voltage from an external source on the circuit under test must be carried out when measuring resistance with any device. Otherwise, not only an increased error will appear, but the measuring device may fail.

If electricians mistakenly connect such continuity to the phase and neutral conductors in the existing electrical wiring, then the filament of the light bulb from the passing current instantly receives a thermal shock, from which the glass balloon explodes and shatters into small fragments.

Similar errors when measuring with ohmmeters and multimeters lead to burnout of the conductive springs of the measuring heads or circuit components in new electronic models. Only expensive devices from leading manufacturers are provided with protection against short circuits that occur in such situations. But is it worth it to check them in this way?

The main disadvantage of self-made dials of this type is the inability to determine high-resistance resistances. Therefore, they are used only when checking current low-resistance circuits.

Multifunctional voltage indicators-screwdrivers

Such devices are now mass-produced by the industry. They allow you to perform 5 basic functions when working with electricity. One of them is the measurement of resistance, which is carried out by connecting the controlled area through a circuit created between the fingers of a person.

In the design of such multifunctional devices used to measure resistance:

batteries with a total voltage of 3 volts;
bipolar transistor amplifying the indication current signal;
LED, the glow of which indicates the passage of current through the tested section of the circuit;
the tip of a screwdriver that serves as a contact pad.

The low-power voltage sources of these devices are capable of delivering only low-value currents to the circuit, which, when amplified by a transistor, reach only a dozen milliamps. This is enough to light up the LED.

However, they can check the integrity of fuses, filaments of light bulbs and similar simple devices. When measuring in complex circuits, multifunctional indicators do not work correctly because they can ring out high-resistance sections created by low environmental resistance. This fundamental flaw often confuses electricians.

Ohmmeters

Their mass production in the USSR began in 1940.

The design of the device includes:

ebonite case with terminal leads for connecting wires to the measured resistance;
4.5 volt battery placed in the power compartment with contact plates;
ammeter calibrated in ohms;
adjusting resistance to calibrate the voltage supplied to the circuit.

On the body of the device near the output contacts, the signs "+" and "-" mark the polarity of the voltage supplied to the circuit.

Such an ohmmeter measures active resistance from 20 to 2000 ohms. In practice, electricians have to work not only in this range, but with higher and lower values. For this purpose, they issue:

megaohmmeters of various capacities, giving out increased voltage to the circuit under test;
measuring bridges that allow you to make accurate measurements of low-ohmic resistances.

Multimeters, testers

For the convenience of performing electrical measurements, combined devices operate on the basis of an ohmmeter, allowing you to evaluate the resistance values on the scales:

ohms;
kiloohms;
megaohms.

They have one precise measuring head, which, with the help of shunts or additional resistances connected by a system of various mode switches, can work as:

ohmmeter;
ammeter;
voltmeter.

Each mode has its own digital graduation in the corresponding units on the common scale. Three combined functions for measuring resistance, current and voltage gave rise to the name of such devices:

multimeter (derived from the words "many" and "measure");
avometer (short for "ampere", "volt", "ohm", "measurement");
tester (indicates the possibility of conducting "tests").

An example of the design of the Ts4324 tester with showing the positions of switching devices for measuring resistance in the 1kΩ range is shown in the photographs below.

Such devices were used in the 80s of the last century.

Modern devices operate both on the basis of processing analog values and using digital technologies. For most models, they are equipped with a display, which immediately displays the value of the measured parameter. This is convenient because:

easier to take readings;
no need to deal with the graduation of the scale;
there is no need to do additional mathematical calculations.

However, the principle of applying voltage to the measured section of the circuit and measuring the amount of current flowing through the resistance remained the same in all devices. An electrician who understands well how Ohm's law works will always figure out the purpose of the switches and how to display information on any device, and will correctly measure the resistance.

How to check the health of the device

The basic rule for accurately determining resistance is the competent preparation of measuring equipment for work and its intended use.

At manufacturing enterprises, all electrical measuring instruments, including ohmmeters, must be checked in a timely manner for:

the integrity of the insulation and have the stamp of the testing laboratory, confirming the permission to operate in existing electrical installations;
correct operation in the declared accuracy class and have the verifier's mark.

For household appliances, the owner should deal with these issues by handing over his tester to the appropriate laboratories.

Before each measurement of resistance it is necessary:

set the pointer device in a horizontal plane and fix it;
check the preliminary setting of the arrow to zero;
calibrate the voltage source;
transfer all switches of the device to the appropriate measurement mode;
evaluate the serviceability of connecting the connecting wires and their integrity, for which close the ends and check the reaction of the arrow or the digital display of the resistance on the display.

And always remember to check the absence of voltage on the test site before starting measurements.

How to call the main elements of the electrical circuit

When monitoring the resistance value of any section of the circuit, the component under test is connected to the output terminals of the measuring device, switched to the ohmmeter mode.

Wires and cables

A serviceable metal core has a resistance close to zero, and the insulating layer on it tends to infinity. This rule is taken as the basis for checking wires and cables.

Inside the wiring there are cable lines and wires connected in various ways. Before starting the measurement, each cable and wire must be disconnected from both sides, otherwise errors may occur due to additionally connected chains.

If it is necessary to evaluate the assembly of the electrical circuit, then check:

integrity lived;
the absence of extraneous chains that may occur during insulation violations.

In the first case, they work with an ohmmeter, and in the second - with a megohmmeter of a certain voltage and power.

When voltage is applied to one core from an ohmmeter, the measuring head on a working wire will show “0” Ohm.

Operating cables that are subject to continuity can be laid in the ground and stretched for several hundred meters. This removal of opposite ends complicates the measurement. The way out of this situation is to lengthen the measuring wire due to:

use of a pre-checked and marked core;
connecting one end of the ohmmeter and the opposite side of the wire to ground loops to create a current path through ground.

When looking for damage to the insulation that led to short circuits in the network, it is better to work with a megaohmmeter and sequentially measure the resistance of each core relative to all the others and to the ground.

For cables of various purposes, the normalized insulation resistance can vary from 0.5 to several megaohms. If places of insulation violation are identified, the wires are rejected and decommissioned.

Fuse

Since this element is a short piece of wire placed in a dielectric case, its good condition will correspond to 0 on the ohmmeter scale, and broken - ∞.

Resistor

It is made to work in circuits with various values of electrical resistance, which can be from fractions of an ohm to several megaohms. Therefore, when checking resistors, all modes of an ohmmeter are used.

Diode

The main purpose of this semiconductor element is to pass current in one direction and block it in the other. Since the ohmmeter, when connected to the circuit, produces a current of a certain polarity, then a working diode will have 0 Ohm when the device is connected directly, and ∞ when it is reversed.

If, with forward and reverse switching, the ohmmeter shows 0 or ∞, then the diode is broken or burned out. It needs to be changed.

Light-emitting diode

In practical electrical engineering, there are both single and complex LED designs. They work on the principle of a conventional diode, which additionally emits light when current passes through it. When the current is blocked, there will be no glow.

At first glance, the LED test technology is no different from the previous method. But there is a peculiarity here: the nominal glow current of most LEDs is about 10 mA. If the ohmmeter gives a much smaller value, then the glow simply will not be visible. This is most often inherent in modern economical and expensive multimeters.

It is also not recommended to significantly exceed the current through the LED with a home-made continuity. The semiconductor layer may not be able to withstand the increased thermal conditions. Therefore, during such checks, it is necessary to know the technical capabilities of the measuring device and limit the test time.

The best way to test an LED is to use a regulated source with the ability to smoothly increase the current up to 10 mA.

Inductor, transformer, electric motor, choke

These devices are performed by winding an insulated wire onto a coil, which is placed inside the magnetic circuit. Each turn of the winding during the passage of current creates an electromagnetic field around itself, which is added to the fields of the remaining turns.

If the insulation of the wires between the turns is broken, then an electrical contact (inter-turn short circuit) occurs, which sharply reduces the total inductance. When such windings ring, their active resistance changes so slightly that it is impossible to detect such a malfunction by measuring with an ohmmeter.

Interturn closures determine:

switching on under load in alternating current circuits;
removal of the current-voltage characteristic.

Using an ohmmeter, you can only determine a wire break or a broken contact connection in the winding.

heating element

Heating elements work in electric kettles, electric heating boilers, heaters. They are made of nichrome wire placed in a metal case and connected to the contact legs.

When measuring a working heating element, the resistance reading on the ohmmeter will have a small value, which can range from several units to tens of ohms (depending on the design). Thread breakage will be indicated by ∞.

For powerful heaters, several heating elements are used, which are connected in parallel, and the terminals are located side by side. In such cases, it is necessary to carefully deal with the belonging of the terminal leads.

The wiring must be fully checked and called if the apartment is being renovated and when the wiring has been completely or partially replaced with a new one. In addition, the continuity of the wiring is done if there are suspicions of its malfunction.

In order to check the wiring in your home, the easiest way is to contact electricians. But the whole problem is that a municipal electrician will have to wait a very long time, and a private one will come right away, however, and his prices are high.

That is why it will not hurt you to master the simple skills of working with electrical wiring. After all, it is quite possible that one day this knowledge will be useful to you in life.

First of all, when working with electrical wiring - compliance with safety regulations.

How to check the wiring at the laying stage

Let's figure out what potential problems an electrician can expect while laying a new electrical wiring.

Usually, new wiring is laid either in special strobes or along bare walls. Then the walls are plastered and further finishing is performed. Therefore, the first check is carried out before the start of plastering. Otherwise, it may be that in order to fix the problem, you will have to open the plaster.

At this stage, problems can be for two reasons: due to the mistakes of the builders (concrete workers or finishers) or due to the mistakes of electricians.

To avoid wiring problems, which can be caused by builders' mistakes, you need to be very careful and vigilant. And in order to avoid the mistakes of an electrician, you need to lay the wiring according to a pre-drawn scheme, as well as carefully check and ring the wiring before starting finishing work.

You need to check the wiring for short circuit, that is, make sure that there is no contact between the phase, zero and ground.

At high voltage, the quality of the wire insulation depends on the quality of the cable, so you should not save money when buying a cable and purchase the cheapest option.

If you have any doubts about the insulation of the wires, then they can be checked with a megohmmeter.

Visually inspect the wiring for mechanical damage. Any damage must be repaired prior to plastering or other finishing work.

If you made sure when checking that everything is in order, then you can proceed to the continuity of the wiring. Below is an algorithm on how to ring the wiring, which can be used for both new wiring and the one that is already in your apartment.

Most often, the wiring is called with a multimeter. A multimeter is a special device that is designed to record various parameters of an electrical connection, such as current or resistance.

Since a simple multimeter is quite inexpensive, find a place for it in your tools, because it can come in handy more than once.

A multimeter that is set to dial mode will help you in many situations. Using a multimeter, you can easily check whether there is a contact, the operation of a switch or outlet, as well as the integrity of all wiring. In addition, this device will help you figure out which wire goes where (this is a common problem in apartments).

There are two types of multimeters:

analog;
digital.

But they work on the same principle.

To ring the wiring using a multimeter, you need to do the following:

Set the dialing mode on the device. This is easy to do as it is often indicated by an LED.
We approach the junction box. There appears a picture with a large number of unmarked wires.
We need to find a phase. This can be done by turning on the machine and checking all the wires indicator screwdriver. The wire that was found must be marked with insulating tape or window tape.
Then you need to find zero. We take a multimeter, which we turn on the voltage measurement mode. By the way, if you need to find 220 V, then we set more on the multimeter, for example, 600 V. One tentacle of the device must be attached to the phase, and the second in turn to all the wires. If 220 V appeared on the multimeter, it means that the wire you were looking for was found. It also needs to be marked.
By the same principle, you need to check other pairs of wires.

In addition to the fact that with the help of a multimeter you can deal with the wires in the junction box, this device will help determine whether there is a break in the cable.

How to check the integrity of the conductor

First you need to completely disconnect the conductor from the current source. If the conductor is a stranded cable, then you need to disconnect all the wires that are included in it.
The multimeter must be turned on either in the continuity mode, or in the resistance measurement mode. If the resistance measurement mode is selected, then you need to set the maximum limit.
It is necessary to connect the probes of the multimeter. If the device is in ringing mode, it will emit a sound signal, and if in resistance measurement mode, zeros will appear on the display.
Then you need to open the multimeter probes and attach them to the conductor. If the conductor is intact, then it will show zero resistance.
If the conductor is stranded, then the actions are the same. The only difference is that if the cores of the conductor do not differ in the color of the insulation, then they must first be marked.

If the cable test showed that the conductor is intact, then the cause of the problem must be sought in some other place.

You can find a cable break or find a short circuit, as well as ring the wiring in the apartment yourself. Actually, it's not that difficult. The most important thing is not to neglect the safety rules, even if you are an experienced electrician.

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Many have encountered such a circumstance when there is no voltage at the outlet. The reason for this in most cases can be a broken wire. In this case, you need to ring the cable that feeds this outlet. Continuity is a check of electrical conductors for integrity, for an open and for the absence of short circuits between them. Such an action will help determine where the breakdown occurred in the electrical network. Next, we will tell you what devices can be used to dial wires and cables.

Dialing methods

There are several ways to ring wires at home:

With light bulb and battery. This is the easiest and fastest method. In order to construct such a device, it is necessary to have a light bulb and a battery (several batteries can be connected together), as well as connecting conductors and a probe. In addition, do not forget that the voltage of the light bulb and the battery should be the same, or the battery has more, but not vice versa. The connecting wire must be long enough to ring the wire from a distance.

In order for the dialer to work correctly, it is necessary to mark the cable in any order. The method of operation of such a device is as follows: a wire is connected to one core, which comes from a battery, and a light bulb is attached to the probe. With this probe, touch the conductors at the opposite end of the cable in turn. If the light is on, then this wire is connected to the battery.

You can learn how to ring the wires with a light bulb and a battery from this video tutorial:

Using a multimeter. This device measures various parameters of the electrical network (for example, voltage, current, resistance). In the house, such a device will be indispensable if you need to check the socket or switch, the presence of a break, or find out where the wire goes.

You can ring the cable with a multimeter using the following method:

The call function is set. Depending on which model of the device is used, this mode is designated differently. As a rule, it is indicated by a diode.
Then you need to find the phase in the junction box. This is done as follows: turn on the power and check each cable with an indicator screwdriver. We mark the required one with adhesive tape or electrical tape and after that we determine zero.
After that, you should find the voltage. To do this, set the multimeter to the "voltage measurement" mode. Using a probe, check each wire. If the next time you touch the probe, it lights up in the region of 220 V, then the right one has been found.

To check the wiring in the wall for integrity, you must disconnect the cable from the power source. Set the multimeter to resistance measurement mode. When the probes are closed, zeros should appear on the screen.

The video below clearly demonstrates the technology of cable continuity with a multimeter:

These two methods are convenient if the dialing is carried out at a short distance and one person can do it. If the cable is long and its ends are in different rooms in the apartment or outside it, then a different method is used.

Using handsets. Dialing with telephone headsets is carried out as follows: the capsules in the tube are connected to each other and a battery is connected to them, the voltage of which does not exceed two volts. Thanks to this technique, employees can talk to each other on the phone and coordinate their actions.

Scheme of cable continuity using handsets:

You can ring as follows: the cable on one side is connected to the tube conductor, and the other conductor to any core. On the other hand, the cable connects to the tube conductor, and the other to each core in turn. If the workers hear each other in the handset, then they are connected to the same conductor.

You can see the whole technology of work in this video example:

With the help of a transformer. There is another way with which you can ring cable lines - this is a continuity using a transformer, in which several taps extend from the secondary winding. The technique is as follows: the beginning of the winding is connected to the grounded conductor sheath, and the transformer taps are connected to the cores and feed each of them. If you measure the voltage that exists between the sheath at the other end and the cores, you can determine whether the end belongs to a particular conductor. The dialing will allow you to identify and mark the necessary cores. You can find out about that from our article.

Cable phasing

Phasing is the ability to determine in what order the phases alternate when connected in parallel. This is necessary in order to avoid. Indeed, in order to increase the reliability of the power supply, sometimes one conductor is not enough (or if the consumer's power is too high). In order for the electrical installation to work normally, another wire is placed in parallel. In this case, the phase sequence must be taken into account. The phasing diagram is shown below:

Phasing can be done in several ways: using a voltmeter or an incandescent lamp. A voltmeter is used for 380/220 V installations. The technique is as follows: cable 2 in the first installation is connected thanks to a knife switch, and in the second installation, thanks to a voltmeter, it determines the voltage between the core and the bus to which it is planned to connect.

If the voltage is linear, then the core and bus have different phases, so it is forbidden to connect them. If the voltmeter shows zero, then this indicates that the wire and bus have the same potential, respectively, they have one phase and can be connected. Other conductors are checked by the same method.

If there is no voltmeter, then phasing can be done using two incandescent lamps, which are connected in series and have a nominal voltage of 220 volts. If the lamps do not glow, then the wire and bus belong to the same phase.

You should also take into account the fact that after such actions, a certain voltage is stored on the cores of cable products, which is associated with a residual capacitive charge. Therefore, the cable should be discharged after the next passage of voltage. This is done by connecting the conductors to ground.

So we examined the main methods of ringing wires and cables, as well as devices that can be used for such work. We hope that the information provided was useful and interesting for you! 0 )

A complete check, as well as continuity of electrical wiring, is a mandatory stage in the repair of any apartment. In addition, ringing the wiring is also required if there are doubts about its serviceability. Naturally, the most in a simple way to check the serviceability of the electrical wiring of the apartment is to contact a specialist, i.e. to the electrician. But municipal services in this regard do not work quickly, and private specialists charge a lot for such services.

Therefore, today, experts in electrical matters strongly recommend that everyone independently master the most elementary and primary skills in working with. Sooner or later, they will absolutely come in handy in your life!
First of all, you need to know that absolutely for any manipulations that are associated with electrical wiring, you must strictly follow all the rules of the requirement dictated by the safety of electrical work.

Wiring check

Checking the wiring at the laying stage

First of all, at this stage of the test, it is necessary to pay attention and determine those potential problems that there is a real possibility of encountering in the process of laying new electrical wiring. Usually the wiring is laid, as a rule, along bare walls. After that, they are covered with plaster, as well as finishing the walls in the room.

The first time to check all electrical wiring is required before the start of all plastering work, this process applies to any type of building, whether or not in an apartment! If this is not done, then you may expect such an unpleasant surprise in the future, in which, in order to eliminate various kinds of problems with electrical wires, you will need to open the plaster, and after finishing the work, plaster everything again.

Wiring diagram

At this stage, the sources of possible problems that may arise in hidden electrical wiring are conditionally divided into two main groups.

The first of them is the mistakes of craftsmen, such as plasterers, concrete workers, builders, finishers, etc.).
The second is electrical errors.

The first group of problems can be dealt with only by vigilant supervision. But the mistakes of an electrician can be avoided in advance. To do this, it is necessary to carefully follow the traced electrical wiring diagram in the process of laying it, and also carefully check it before starting the finishing work.

Simple check of new wiring

There are a few tips to help you make sure it's working. You need to check it in terms of whether there is a short circuit. That is, there should be no contact between ground and zero, phase.
The level of quality of insulation of electrical wires at high voltage depends directly on the degree of quality of the cable. That is, you need not be stingy and purchase a not very cheap version of the materials, and then, most likely, there will be no problems.

If there is no confidence in the quality of the insulation, then it can be checked with a megohmmeter. Often, in most construction stores, such a service is provided on the spot when buying.

The next stage of verification is a visual inspection of the condition and quality of the cable insulation. All mechanical damage must be removed before the cable is covered with plaster or finishing material.

Checking the socket

In the event that everything is fine at the previous stage, it is possible to proceed to the next stage of verification - you need to perform a wiring check (this stage is also very important when). Each owner of the premises does not fit to get acquainted with the description of the dialing procedure in as much detail as possible. According to a certain algorithm, it is possible to check not only new wiring, but also one that is located in a residential apartment or house.

We call the wiring

Ringing tools

Wiring continuity, as a rule, is carried out by a special device - a multimeter, which is designed to register all kinds of electrical connection parameters (voltage, current, resistance, etc.). Today, multimeters are analog and digital, but the principle of operation of these devices always remains the same.

Checking wiring with a multimeter
Checking Connections

First of all, it is necessary to set the dialing mode on the multimeter - it is often marked with an LED.

Then you should go to the place where the electrical wiring is called, i.e. to the junction box. As a rule, there, a bundle of unmarked wires appears before your eyes.

You need to find the phase - turn on the machine, check all the wires with an indicator screwdriver. At the same time, the found wire should be marked with an insulating tape, as well as a tape that is intended for pasting windows.

The next step is to find zero. Turn on the device to measure voltage (when we need to find 220V, we should set more - 600V for a number of models). Then, with one probe of the multimeter, you need to touch the phase, and with the other end of the device, you should test the electrical wires one by one. As soon as 220V appears on the device, it means that the wire that was needed was found. It must be marked.

Then you need to check other pairs of electrical wires according to this principle and mark them.

Checking the integrity of the conductor

In order to check the integrity of the electrical wiring, we need to perform the following steps:

Disconnect the conductor from the current sources themselves. If the conductor is a stranded cable, you need to do this for all the wires that enter it.
Then you need to turn on the device either in the continuity mode, or in the resistance measurement mode, but always at the maximum rough limit.
After that, you need to connect the probes of the multimeter. IN this case zeros should appear on the instrument display. At the same time, in the ringing mode, which has sound, the multimeter will emit a squeak.
Next, you need to connect the open probes of the device to the conductor. It is necessary to know that the whole conductor, at the same time, shows zero resistance.

The ringing of electrical wires in the apartment, as well as the search for a violation of the integrity of the cables or a short circuit, can be quite well done and independently - without the involvement of an expensive specialist, and if you don’t even need to call the master at all.

The main thing is to approach this issue consistently and strictly adhering to the above recommendations of professional electricians. And of course, be sure to remember that even if it seems to you that you are already a fully experienced electrician, you should not forget to follow the safety rules!