Redevelopment of an apartment, installation of additional sockets, transfer of the doorway - all this requires knowledge of the location of the old wiring, which is "closed" into the wall. There are several ways to understand where the wiring passes. Some of them are less accurate, but cheap, others will determine the place of passage of the wire with an accuracy of a centimeter, but they will have to wake up. Let us discuss the effective ways and dispel myths for some.
Search for a radio receiver
If you have not yet threw your old radio, but keep it like rarity, then you can find the wiring hidden in the wall in the wall. To do this, you will need to adjust it to the frequency of 100 kHz. It is also necessary that the network is voltage. Then pull the antenna to the maximum and lean it against the wall (it is possible without an antenna). Slowly lead an antenna along the wall (without touching not to create friction) - the closer you will be to the wiring, the more you will hear the characteristic crackling. Try to keep silence to clearly hear the change in the tonality.
The radio receiver allows you to find a wire with an accuracy of 10 cm - this is certainly a big error, but if you just need to understand where to score a nail for the picture, then this method is suitable. For "opening" walls, we do not recommend using this method.
We are looking for wiring hearing aid
Hearing apparatus of the old sample will allow the "medium" accuracy to determine the location of the wiring. In some hearing aids, for example, at the AK-1 model, there is a "phone" mode, which allows weighing people to talk on the phone without outsiders. In this mode, the device will be sensitive to oscillations of electromagnetic waves. Now you just need to lead along the wall in the place where you think the wire should lie. As soon as you hear a characteristic crackle, then you came across the wire. His error is about the same as the radio receiver.
Indicator screwdriver to help
This is the most effective of "cheap" ways. The issue price is 100 - 150 rubles, but using it you can determine the wire under the plaster with good accuracy. So, to determine the wire you need to pinch the slot (tip), and the back side of the position of the alleged wire. When the LED is detected, it will turn red (well, or in any other color). Please note that the screwdriver is capable of detecting the wire at a depth of no more than 2 cm, and it must be energized. Therefore, if the wiring lies deeper, then the screwdriver is unlikely to notice it.
In any case, each electrician in arsenal must have an indicator screwdriver. For example, an inexpensive version of the Robiton VT-005 indicator screwdriver, which allows you to determine the voltage contact and contactless way.
To search for wiring Multimer, you will need a device and an ordinary transistor, for example, 2SK241. Test on the device measurement of resistance to the position of 200 com, and both crocodiles put on the left and average conclusions of the transistor. The extreme right conclusion that remained without a crocodile will be an antenna. For additional measurement accuracy, it is possible to attach a copper wire with a length of 5 cm to the extreme right output.
Now it is enough to drive a transistor with an improvised antenna on the wall. When the transistor falls into the electromagnetic field, its resistance will change, which will be displayed on the multimeter. This method more accurately all the others, but also gives an error to 7 cm to each of the parties (the indicator depends on the depth of the wire). By the way, a multimeter can be used by any, even inexpensive, such as Elitech MM 100.
The work of the metal detector is based on the principle of the induction balance between the transmitting and host coil. It works in the range from 2 to 20 kHz, and fixes the phase shift when bringing the coil to the conductor. We carried out measurements using the cheapest and simple PIRAT Pro Metal Detector for 2500 rubles, which is mainly designed to detect the "Cherme". The illustration below shows the result of the search for wiring.
As can be seen, the metal detector clearly defines the location of the wiring. Its main advantage is that the wire is detected, even if there is no voltage or load on it. Also in the panel houses you will see the reinforcement in the plates, and in wooden - nails. But more expensive models allow to cut off ferrous metals and find only copper or aluminum. However, the area of finding is increasing the size of the coil, so the error can be up to 5 cm. In this way it is worth using only if you like to hunt coins and you already have a metal detector.
Detector of hidden wiring
This device is directly designed to detect hidden in the wiring wall. Detectors on the principle of operation can be electrostatic, electromagnetic and combined. The first is quite simple in work and inexpensive. They allow you to detect hidden wiring and torn wires that remain under voltage. However, with high humidity in the room they give false responses.
Electromagnetic detectors allow you to very accurately determine the cable in the wall. However, for this you need to submit a load on the phase at least 1 kW - for modern household appliances it will not be much difficult. Naturally, no voltage in the network will not find the cable.
The combined devices combine electromagnetic, electrostatic and metal products. In essence, it is a manual metal detector, which allows you to find a wire in different ways, and even in the absence of voltage on the network. The maximum detection depth of most devices is 7 - 8 cm, which is quite enough for wiring in the apartment. Additionally, it can see fittings in the walls and other metals. The ADA Instruments Detector Wall Scanner 80 is a bright Representative of "Detectives" for wiring, allowing you to define a cable at a depth of up to 5 cm.
"Folk" ways that do not work
Some mistakenly suggest that if you bring a compass to the intended place with a cable, then the magnetic arrow will indicate it. However, at home, it is simply impossible to create magnetic induction of such force so that the compass showed the cable. Maximum, this you can find out the location of the sides of the light, well, or find the hidden treasures of the captain of Flint :)
Search for smartphone
Some developers propose to turn your smartphone into a metal detector using their "miracle" applications. To do this, in the phone, a magnetic sensor must be installed on the phone (we have such a thing). Ichip decided to freeze and check out popular apps to search for metal. Tested in the same place as the metal detector. That's what happened:
As you see the readings of the "detector" in the empty place and at the venue of the real passage of the wiring almost did not change, although the figure should have become 0.02 - 0.03 MT. The same thing happened with other applications. From this we conclude that the search for wiring with a smartphone using the applications a fairly dubious occupation.
Perhaps you know more ways to detect wiring or vice versa, that some methods are already irrelevant. Share them in the comments!
Sometimes such an elementary effect is like, for example, the installation of a wall shelf or the picture can be a real problem. This is due to the fact that the Contractor is simply unknown, and does the electrical cable goes out in this place. Such a situation may occur if you have acquired a new housing, and previous owners did not bother to provide you with an electrification plan of the room. Yes, and if there is a layout plan, you should not rely on the decency of the people who were performed, because in order to save electricians, they often neglect the established norms. For their own security, we categorically do not recommend hope for good luck. In this article we will tell how to find hidden wiring In the wall, both with the help of special devices and without their use.
1. The most elementary ways to detect hidden wiring
Masters who neglect the activities associated with the detection of the exact location of the electrical cables may face close Unpleasant consequences. Starting from damage to the cable itself, which will lead to a short circuit and, accordingly, the failure of the item, which felt from this cable itself, up to electric shock. Follow the search must be required if you have needed:
perform installation of a new outlet or switch;
perform other installations related to the drilling wall;
partially replace the electrical cable;
eliminate various malfunctions with an electrician (break or short circuit);
when redeveloping a room related to the making of new openings;
When redeveloping the electrical wiring diagram itself.
Only if you are planning Full replacement Wiring, you do not need to know the location of the cables. With overhaul, old wires can simply be pulled out of the wall. It is not hard to do this, as it hides them only a small layer of putty. And if the new layout will be held on the ceiling, which is very in demand lately, the old wires can be left in place at all.
Consider Simplest ways Detection of hidden wiring:
Visual inspection. This method is very good. Especially if you plan to change the wallpaper. After all, he implies their complete removal from the wall. You need to get to the plaster. Therefore, the base layer also needs to be twisted and removed. Now you just need to carefully examine the walls. Hidden installation is made by laying wires in shallow shoes, which then simply close the layer of plaster. It does not always manage to do perfectly smoothly. Often there will be small bulges in these places or vice versa, small recesses. It is these places that need to be detected. To be confident by 100%, spend your hand on the wall in the intended place. You will definitely feel these nuances. Now you need to bargain the wire, that is, to save it from the masking layer of the solution. To do this, use a small plumbing hammer. Carefully catching up along the entire length of the ships and the putty will split.
With the help of old Radio reception This simple method is described in many sources, because it really works. You will need a receiver to configure clearly percentage of 100 kHz. There should be complete silence in the room. The receiving enabled must be leaning as close to the wall as possible, but do not scratch them over the surface, and spend along the appearance of a characteristic crack or an increase in noise level. If there is a retractable antenna, it is necessary to led along the wall with its tip. This signal will notice the availability of the wire. The only one condition In which this method works, is the presence of voltage in the claim. The closer you will approach the stroke, the more crash will be strengthened. This method cannot boast of particular accuracy. But I can easily determine the corridor in the range of ± 10 cm. Often this is quite enough in order not to get a nail to the wire.
Via Indicator screwdriver. This thing definitely has most owners. This device is characterized cheap and easy operation. The indicator screwdriver works on the principle of response to the electromagnetic field, which emits an electrical cable. It has three degrees of sensitivity - "O", that is, determining the supply phase, "l", that is, the contactless determination of the presence of electrical wiring with a low degree of sensitivity and "H", which means the contactless determination of the presence of electrical wiring with an increased degree of sensitivity. The indicator screwdriver is equipped with a light indicator. When you find a hidden wire, a small diodion at its end will light up. Using the device is very simple. It is necessary to touch the screwdriver sting and just drive it along the wall. TO disadvantages associated with the use of this method, you can attribute a greater error and a small depth of action. If the cable is hidden under the layer of plaster, a thickness of more than 2 cm, the indicator screwdriver will not help you. Yes, and the width of the channel in which the cable presumably passes, will lie in the range of ± 10-20 cm.
Via Humorcraft. A very unusual way, for the embodiment of which the hearing aids of the old sample are ideal, for example, the AK-1 brand. With it, you can definitely determine where the wire passes. This device has a "phone" mode, which helps weighing people without obstacles to carry out telephone conversations. To detect hidden wiring, you must translate the machine to this mode. Now he will perceive only electromagnetic oscillations. It remains only to bring the sensor to the place where you think the cable must pass and listen carefully. When you find yourself in the right place you will hear the characteristic noises.
According to established standards All wires from the dilution must be laid strictly vertically or horizontally and have an angles of rotation equal to 90 degrees. Laying the cable diagonally is strictly prohibited. Perhaps this knowledge slightly simplifies your searches. If you see a socket or switch, it is logical to start searching the cable leading to it directly above this point or on the side of it, if it comes to parallel connection.
2. Overview of the most applied search devices
Not always "folk" ways, given their greater error, give the desired result. In this case, you will have to resort to the help of special devices. Before we consider the most popular of them, you need to deal with Principle them actions. Three varieties of seekers distinguish:
Electrostatic - The principle of their action is based on the capture of the electromagnetic field, which radiates the current passing through the electrical cable. Instruments based on such principle are among the easiest and most affordable costs. They are most common both among professional electricians and homemade masters. The accuracy of determining them is quite high. You can use the electrostatic device only if the walls are absolutely dry and not sent and there are no extraneous metal inclusions. This is primarily about the reinforcement, which is often found in the rebounds of panel houses.
Electromagnetic The devices are based on the same principle of operation as electrostatic, but with one difference. The desired wires must be under load of at least 1 kW. That is, before being taken for looking for a wire leading to a specific outlet, you need to include something in it. It can be an electric kettle, microwave or something else.
Metal detectors - differ from previous devices in that they are emitters of the electromagnetic field. When metal, which is located in the middle of the cable, will fall into the zone of action of the magnetic field created by the instrument, it will cause its changes. It is on these resistance and reacts a metal detector. Advantage The instruments of this type are that the load on the wire is not mandatory. And explicit disadvantage It will become that the metal detector will react not only on metal in the middle of the electric cable, but also on all sorts of wires of the wire in the wall, old nails and fittings. Therefore, purchasing such a device, it is better to buy a more professional model that allows you to determine the type of metal detected. This function will significantly simplify the search.
There are appliances with Combined principle of action. The region of their use, as well as their accuracy, is much higher. With their help, you can not only identify the location of the wiring, but also determine the location of the cliff or ground, detect the phase wire. Such a device will become indispensable if working with electrical wiring is your specialization.
Now consider in more detail individual Models Search Devices:
Device "Search" Based on the electrostatic principle of operation. It is equipped with 4 modes of different sensitivity, with which you can determine the location of the cable, which lies at a depth to 7 cm. Light and sound indication is used as a signaling device. This device is very simple in circulation and has a number of additional functions. To search for wiring, you must select the appropriate mode, in this case the fourth, and simply drive along the wall. For home use "Search" is very good and has an affordable cost. But for professional work it will not work.
Another popular model of domestic production is the device called "Woodpecker". It can be used both homemade craftsmen and specialists. It is both a tester and alarm. With it, you can detect an electrical cable under the layer of plaster up to 8 cm inclusive. The device can monitor the operation of the fuses, perform the search for phase cables, check the phase of the electricity meter, search for electrical faults. The principle of its action is based on the electrostatic of an alternating field. When the device antenna approaches the wire, the electrodynamic force begins to work and the equipment reproduces the signal.
Tester Sem La-1014 It is a proven and high-precision device. With it, it is possible to detect even de-energized wires under the layer of plaster. A characteristic feature of this device is that it is capable of finding faulty and damaged sections of cable, having a melting, location or cliff. Disadvantage Tester is his response to other metal items that may be in the wall.
One of the amateur devices based on the combined principle of operation is called Mag-2. The device combines electrostatic and electromagnetic principles. It has two modes of operation that allow you to detect a cable under load or without it. When the cable is found, the device will notify this with the help of light and sound indication.
Signalizers of Chinese MS series manufacturers. For example, device MS-58M, which refers to the category probe tester, easy to detect both electrical wires and other metal objects. Given this, it is necessary to be extremely attentive when working this device and learn how to distinguish the signals that it submits. For example, a signal coming down when a conventional screw in the wall is detected, will be different from the signal coming from the power cable. You just need to get used to the device. An interesting fact is that he will not be able to detect an object that wrapped in aluminum foil. It serves as a screen that prevents the detection of metal particles.
Using any of the above instruments, you are pretty quickly and accurately cope with the task.
3. Methods that do not work
We reviewed the effective ways to detect hidden wiring with both professional instruments and remedies. Now let's look at a couple of ways that contrary to repeatedly mentioning the Internet, do not cost you to spend time on their embodiment:
Wiring with compass. Despite the fact that most of the craftsmen recommend this method, you must understand its principle of action. It is based on the fact that at home you must create a load of such a force so that the arrow of the compass, approaching the cable, reacted to it, and also pointed out in the right direction. In fact, you just can not create a magnetic induction of such force so that the compass has reacted to it. And considering the considerable layer of plaster, it is at all the failed matter.
Wiring with magnet. It makes it possible that if you give a single-barked magnet on the thread and you will not led them along the wall, then in the place where the electromagnetic cable is laid, a magnet as a pendulum will start fluid. Making these oscillations, the ability to schedule a corridor appears, within which the cable will pass. Perhaps, but it is very doubtful that this method will work in brick houses. In the panel houses, or when trying to detect the power wire on the ceiling, this method is absolutely useless.
Smartphone, As a device for finding hidden wiring. For smartphones on the Android or OC Mac platform in the application store, you can find many programs that are called to cope with the search. The most popular is the application called "Metall Detector", but there is a lot of its analogues. Inside the phone there is a built-in magnetic sensor, which in the complex with this application turns the smartphone to the metal detector. First, the device will react absolutely to any type of metal that is in the wall. And secondly, you should not perceive this idea more seriously than an ordinary toy. Especially, it is not necessary to rely on such a dubious way as on the main one before the start of performing any work.
4. Fans of electrical engineering: Masters Search device with your own hands
Those who are somewhat disassembled in electrical engineering can independently make a small device from the elementary details. For the manufacture of you required:
The box should not be too large. A plastic box is suitable from a regular light bulb. One of its sides it is necessary to stick a small piece of aluminum tape. It is necessary as an antenna. Set 4-5 W batteries. Do one of the faces hole and wind the light bulb. Now it is necessary to install a super-sensitive transistor and attach the batteries and an antenna to the scotch. Wire can be used as an antenna. When all parts take their place inside the box, close the lid. Drive the antenna received appliance on the wall. When you touch the location of the cable, the light bulb will light up.
Another simplest device can be collected from:
Paying attention to the fact that this device is one of the elementary for understanding people, its accuracy will be appropriate. Collect the chain is necessary according to the scheme below. Ommeter is better to use the arrow type. For convenience, you can make all the components in a small box. The speaker is suitable from the old stationary phone. The device will react to the presence of wires in the wall with appropriate noise.
Find wiring with special devices, task Not to say complicated. It all depends on the quality, the cost of the device, as well as from the correct setting and the ability to use it. And what to do if you do not have the devices, from the word in general, and the wiring is necessary right now.
There must already be remembered by old effective methods that often help, but rely on them with 100% probability is still not worth it. Moreover, some Chinese wiring indicators are worthwhile penny, but allow you to narrow the space to search to several centimeters.
Dismantling of wallpaper
If you spend the house overhaul, and the current state of the walls and wallpaper does not bother you too, it is possible to simply construct everything over the wall, right up to the base (brick or concrete). The old shoes after that can be visible visually, or to feel the touch, thanks to the discharges or on the contrary, characteristic deepening. If the wall is not plastered at all, and under the wallpaper naked concrete, then cable shoes will be 100% visible even with a naked eye.
Search for wires in the wall of the radio
Another way is the involvement of an ordinary radio. Configure it to the frequency of a hundred kilohertz and as much as possible as possible to bring it to the wall in the place where the wire should be supposedly undergo. The wire must be energized.
To create significant noise and interference, turn on a razor in a rosette, or a high-speed grinder, drill, vacuum cleaner.
If you guess with the cable location, the receiver will start cracking. The closer to the stroke, the stronger. Instead of a radio receiver, you can still use the coil microphone, connect it to the tape recorder with speakers, to play audio interference.
Search for wiring multimeter
This method is suitable for radio amateurs. Special search testers are not needed here, but it is required to have a simple Chinese multimeter and field transistor. The chewfather can be one of the following marks: KP103A, KP303 or 2SK241.
Include a multimeter for measuring the resistance (200kom), and its probe attach to the left and medium output of the transistor (stock + source). The right output is used as an antenna. The principle of operation of the device lies in the fact that when the field of field transistor in the electromagnetic field, its internal resistance changes its internal resistance. A multimeter just fixes it.
Where the change in resistance is maximally - there is a center of marching wiring.
If you attach an additional antenna (piece of copper wire), then the sensitivity of the device will increase dramatically.
Video on the entry search by multimeter:
Correct diagram of emital art
This method is applicable when the wiring in your home did professionals of their business. According to the rules, it is possible to lay an email and wires only by vertical and horizontal directions. Laying of wiring diagonally is prohibited. At the same time, the minimum distances from the short to the ceiling, doors, etc. should be held. You can get acquainted with these distances in the article as an end of the walls under wiring.
Knowing the arrangement of the distribution unit, you can take it for a landmark and virtually paving the lines under 90 and 180 degrees, allegedly determine the locations of the wire. After that, be sure to use the above methods to confirm your assumptions.
With the help of a hearing aid
Using old hearing aids, such as the brand AK-1, you can find the hidden wiring with quite great accuracy. Test on the device "phone" mode - it is needed that a bad hearing person can freely talk on the phone in a noisy setting. In this case, the device becomes only susceptible to electromagnetic fluctuations What we need. Take the sensor to the intended place of the hidden wiring, and lock noise.
A flexible cable is soldered to the player head (you can take from the USB cord). Turn off the motor motor in the player (less noise, and the batteries save). Connect the load in the wiring. We press the Play button and putting the player's head we are looking for the place of formation of the greatest hum. The truth is the sensitivity of this device is pretty small. When removing wires from 1 cm and further, the more under the plaster, the device almost does not react.
Methods that do not work
Search for wires compass
At least some recommend this method, in the realities you simply will not be able to create a load at home this electromagnetic induction so that an ordinary compass has reacted to it, and also accurately indicated that it is electrical wiring, and not ordinary fittings. And if you still consider several centimeters of plaster under which the cable lies, then what kind of miracle compass should be and how much will it cost?
Modern programs designed for any kind of iphones and other gadgets, although they assure that with ease can find metal objects and react to magnetic fields, you still need to perceive as expensive toys, and not devices can find a hidden wiring. And they should not trust them in any way.
The exception is an additional device scanner to the smartphone from Walabot. You can get acquainted with it in the article
Wiring Wiring Smartphone - Walabot DIY Scanner
Summing up It is necessary to recall once again that all the above methods have a very greater accuracy of the detection of hidden wiring (often up to several tens of centimeters). And you should not trust.
To accurately determine where the wire occurs under the plaster, it is better to use inexpensive devices (woodpecker, MS 158 detector), which is stated in the article to determine the hidden wiring, but professionals can use the high-quality tool of the Hilti PS 38 multi-instructor.
Read and compare the current prices for detectors from different manufacturers here.
About how to find wiring in the wall, an indigrant Novosel is thinking not only at the moment when a violation has happened in the power grid, and immediately after buying an apartment. Knowing the location of the hidden wire network will be useful when redeveloping, cosmetic repair, furniture placement and installation of attachments for attachments. Of course, it is too easy to find damage to damage quickly.
Detector of hidden wiring
The presence of a power plane is needed to:
Do not damage the wiring when hanging wall lamps, attaching a picture, a dropping of dowels intended for fastening suspended furniture (for example, shelves);
properly organize redevelopment of the interior, for example, move the partition or doorway;
rationally place furniture;
safely perform repairs;
Do not get an electrician when drilling a hole or clogging of a nail;
Quickly determine the place of wiring disorders.
There are devices designed to detect the lines of active wiring, and devices that can find the place of violation without opening the plaster coating.
On the principle of operation, detector devices are:
electrostatic (detect the wires located under voltage, for which the current is not passed);
Detectors (PC - indicators of hidden wiring) differ in power, as well as by the presence of additional functions. In everyday life, there is a need for sensitive devices that are used by professional electricians, and which, besides, the roads. Enough household appliances with a small number of functions less than the price.
Electrostatic indicators are characterized by simplicity of operation, budget, easily detect the location of the cable break in the wall. Cons - sensitivity of the device to the induced interference of electromagnetic nature. Computers, microwaves, routers, TVs are knocked on with electrostatic devices. It is impossible to "adversely" statics, if the wall structures are reinforced, or the plaster typed moisture.
Detectors with the electromagnetic principle of action "pay attention" only on the wires with the current current. Inexpensive copper is less sensitive, able to "see" wires under load of at least 1.5 kW. That is, if the wires provide the chandelier or other lamps, the place of the wiring place does not reveal. The advantage of devices is the ability to identify the location of the electrical cable with millimeter accuracy.
Metal detectors are the same "see" colored and ferrous metals, therefore signalize the presence of hidden fittings, pipes, nails or cables. Therefore, such orackers are rarely used in its pure form when they find the location of the wires.
More often, metal detectors are used as auxiliary equipment, if you need to confirm unsustainable weak signals obtained by other sensors. However, if it is reliably known that there are no other hardware in the wall, you can use to search and these indicators.
Homemade Metal Detector for Wiring Search
Expensive combined detectors are designed for the simultaneous use of several methods, therefore, more efficiently. Professional electrical installations are also appropriate for additional functions that are equipped with combined isp. The wiring runs under the plaster close to the surface, so in everyday life there is often enough cheap statistical devices to search for wires.
The simplest household devices are distinguished by the "simplest" price starting with 5 dollars. The device has one sensor and sound, or the light indicator. The depth of their action is small, and the degree of sensitivity is rarely adjusted.
The devices that are popular are called professional, differ in multifunction and sensitivity. Some models can with an accuracy of 5 mM register the electrocabels lying at a depth of 150 mm. The price reaches 500-600 dollars.
From domestic detectors Popular:
Eltes Woodpecker E121 ("sees" wires that are under voltage (!), Hidden layers of plaster thick up to 2 cm).
Bosch Truvo (with a traffic light-changing color from green through yellow-to-red, pointing metal, flashing over the wires under stress, burning smoothly above the hardware). "Sees" metal, worn up to 70 mm, wires covered with plaster with a layer of 5 cm.
Chinese indicator pumping.
Eltes woodpecker E121
Search for a radio receiver
If it did not turn out to be a factory manufacturing at hand, you can use radio engineering. You need to adjust the radio at a frequency of 100 kilohertz, closer to the wall (as far as possible), drive along the surface. The method is triggered by the location of the wires under voltage.
The creation of a "substantial" noise contributes to the inclusion of a razor, a vacuum cleaner or grinder, then when approaching the wiring, the receiver begins to crackle (the closer to the wire, the cracks louder). Such a method also find a breakdown of wires, over which the receiver ceases to noise.
Another invention of radio amateurs of the USSR is the detector made from an old cassette portable tape recorder. The enhancement of the device consists in an extension of the magnetic head, replacing it with a reel from the starter or relay (solder).
The search is performed when the tape recorder is turned on into playback mode. The coil is etched along the wall, listening to the sounds published by the speaker. To obtain a deckled signal, a couple of chargers that give pulse interference are included in the power outlets. The location of the wiring is recorded with an accuracy of 1 cm.
We are looking for wiring hearing aid
The "phone" mode, when the device is turned on, the device passes to the reception of electromagnetic oscillations, which comes from the telephone dynamics, in most hearing aids. Therefore, you can use to search for hidden wiring and such equipment.
The device sensor sim simply. A shielded high-purple coil having an internal ferrite or metal core is applied. The wiring must be turned on at least 100 watts load, then the accuracy of the localization of wires is 0.5-1 cm.
As the indicator more suitable pocket than the ear modification of the device.
Indicator screwdriver to help
The simplest hidden wiring detector is a Chinese indicator pumping. To detect the wire, closed with a layer of plaster, take the screeching for the slot, pressed the sideline of the arms and lead along the surface.
Once over the wire, the twig is triggered, and the indicator begins to glow. For household purposes (check the presence of a phase or zero in the outlet) such a device is enough. The price is low (starts from 60-70 rubles), so the acquisition of the device for the owner of the housing is easy.
Indicator pumps are on batteries and without. Devices can also be used for:
Another registration method is based on the peculiarities of field transistors, the current in which changes when the semiconductor device falls into the electric field. Therefore, radio amateurs to find wiring in the wall, easy to dispel a simple detector device from it and a multimeter (suitable arrow old tester).
The transistor is required by this in which the shutter has a small inlet container and low opening voltage. Such a shutter possess the import elements 2SK241 or Soviet from the KP103 series, KP303.
When the transistor is far from the wiring, its resistance is about a few hundred ohms. When the field transistor approaches, an email field is formed to the cable around the semiconductor, and the resistance of the instrument is sharply rising.
Increase the sensitivity of the home detector will help the ship-shown to the shutter of the wiring 0.4-0.5 mm with a diameter, the length of which is easy to pick up an experienced way. Sufficient length - 5-10 cm. This antenna can be collapsed by giving the coil shape.
The multimeter is switched to the measurement of resistance in the range of 200 kΩ;
The probe cling to the conventions of the transition of the stock-source (polarity of any), leaving the shutter hanging in the air (as an antenna);
lead the transistor antenna (shutter) along the wall;
As soon as the semiconductor element enters the electromagnetic field, its internal resistance changes;
The multimeter immediately registers the change, and the change will be maximally on the posting site.
Properties for convenience are wrapped with scotch, then they do not disintegrate when used.
If the metal detector is already available in the economy, the device can be used to detect the hidden wiring. Metal detectors working in the "transmission-reception" mode record reflected from the "target" the electromagnetic signal is exhausted by the transmitting coil.
Removed with a hidden metal signal, falling on the receiving coil, causes the appearance of an electromotive force in it, which is registered with a metal detector. If the metal is not, there is no reflective signal, and the instrument readings are zero.
Such a "seeker" is easily confused, not a distinguishing wire and a metal profile for fastening the drywall, signal, if the nail is "hidden" in the wall. Models are more expensive able to distinguish Cheremet and colormet. Plus such a detector - the ability to detect a de-energized wiring.
Correct email scheme. Wiring
If professional professionals were engaged in the wiring of the wiring in the house, then, knowing the rules of the electric cable laying, it is possible to find out the estimated arrangement of the power grid. Laying wires and cables according to the rules, not allowed to diagonals.
You can only do this vertically (perpendicular to the floor) or horizontally (parallel to the floor). The norms also have minimal distances between the strokes and elements of building structures (ceiling, doors, etc.). Usually it is 15 cm from the ceiling or floor surface.
Over switches, sockets going to them wires go up
If you "dance from the stove" (distribution cutters), moving linearly at 180 and 90 degrees, with a high probability you can calculate the approximate location of the wires. But to apply for accurate location another method will have to. The prediction of the position of the network for the "correct scheme" will help save the search time.
In the wiring mode of any ox, in fact, it is a radio reception, which is capable of finding a background emitted by wires under alternating current. However, on "industrial frequencies" - 50 Hz radiation is not enough.
This forces the manufacturers of instruments to make devices are finely sensitive. In addition, for professional electricians, the device is always multifunction, and their cost reaches 36 thousand. The developers also took care of the creation of devices for life.
Universal WT55 WinTact Detector
You can purchase and use at home by any universal detector, if, thanks to other functions, such a device will be uncompaired in the economy. Modern universal detectors are capable of solving several tasks, for example, perform the functions of a laser rangefinder, laser level, used to calculate the area.
Going to search for hidden wiring, remove your mobile phone from your pockets, turn off the Wi-Fi router.
How to find wiring in the wall: Folk ways that do not work
Along with working methods for finding wiring, which enjoy folk craftsmen to find the hidden wiring in the wall, there are and non-working ways that are also offered on the Internet. In order not to waste time is wasted, do not be upset, it is worth understanding what is the case.
"Clerts", recommending a compass as a search device, apparently, in fact, did not use the magnetized arrow for finding a hidden plaster. To understand this, there is enough knowledge of the principle of the compass, falling into the zone of action of electromagnetic induction.
In order for the compass arrow to react to the cable and unfolded in the right direction, it will take to create a magnetic induction of impressive strength, which is problematic, and with a plastering coating, the problem is failing.
Search for smartphone
This is another "failed" undertaking. Do not trust advertising programs for smartphones that, allegedly, help turn OC Mac or Android to the search device.
Despite the fact that a magnetic sensor is built into the phone's insides, which should turn into a metal detector, to look for wires in this way - wasting to spend precious time. It is rather fun, since the device reacts to any of the types of metal hiding in the wall. When we are talking about solving serious problems, not before the poles.
What to find the wire break in the wall
It can be used to determine the location of the wiring integrity under the plaster. The same radio, which makes a crack over the holistic wiring, shook over the breakdown. The hidden opening is easily detected using electrostatic detectors.
Knowing how to find wiring in the wall can facilitate the life of Novoseli, will help to avoid electricians when drilling the wall, and will also save time in search of the network break points.
During the repair it happens that the unsuccessful hole in the wall leaves an apartment without light. This means that the drill of the perforator interrupted one of the cables under stucco. If you know how to find wiring in the wall, you can avoid similar troubles.
What is looking for hidden wiring
Usually, the search for wiring is engaged when you need to make a hole in the wall. For example, when installing new furniture or disintegration of paintings. A little less frequently stamped cables are looking for during repair work when it is necessary to transfer the outlets or dismantle the walls. Therefore, you should select two common reasons that require the search for the wire:
Simple drilling wall. For installation of furniture and interior items.
Construction works. Transfer of sockets and switches, disassembly walls.
If you do not find the wire hidden under the stucco wire before drilling, that is, the risk of damage them. The cable of inconvenience and unplanned financial costs for repairs in the thickness of the concrete wall. Place of damage will have to open. That is, to take a tool in the hands and drop the wall to get to the damaged section of the cable.
Additional Information. Most cables are laid by right corners. They go horizontally to the sides or vertically up from switches and sockets. This rule allows you to approximately catch in where the wiring passes.
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Professional search devices
There are many techniques that allow you to find out the place of laying cables. They are based on the use of instruments capable of detecting the wire without direct contact. These include the following devices:
Electromagnetic detector of hidden wiring;
Multimeter and field transistor;
Electromagnetic detector of hidden wiring
Electromagnetic detectors are professional devices manufactured to detect wires. Their work is based on the registration of variables of electromagnetic fields coming from the conductor. This type of device requires that a current of 5-10 amps flows during the search for a probe cable. This corresponds to the electrical load in 1-2 kW.
The electromagnetic instrument for searching for wiring has good accuracy. But there is one big drawback. It is able to detect the wire, if the current flows. Find this device the chain rupture will fail. Accordingly, the house should be energized, and the test line does not have a wire break. The detector of this type is perfect, if the cable is in working condition, and you need to make a hole in the wall without unnecessary risks.
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The cheapest method of detecting hidden wiring. The indicator costs about 20-30 rubles. It has every electrician. Electricians use it to search for phase and zero. If you touch the indicator screwdriver to the cable, it will light up. Dear models are capable of laying a beep. Regardless of the price, the device points to the phase wire, and it is silent to zero.
Transistor modifications of indicator screwdrivers are capable of glowing without direct contact with the cable. Sensitivity allows you to detect the phase wire at a distance of up to 20 mm. Therefore, if the current-carrying vein is at a slight depth, the device will detect it. It is important that the wire is under voltage, and the indicator was transistor.
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This device is often referred to as a metal detector. It is used to determine the presence of metal in the thickness of the Earth at a depth of about one meter. If there are no metal fittings in the walls, it does not interfere with using the metal detector to search for wiring.
The use of metal detector wins in front of other ways to search. To detect the wire it is not necessary that the cable is under voltage. The device is designed to search at high depths, so it is easily able to find the wire in the wall at distances 1-5 cm. At such a depth, the cable is usually paved.
However, it will not work in a metal detector in the building with reinforcement. The device works on any metal, not specifically on the wiring. Metal detectors are quite large in size. They are problematic stored in a standard toolbox.
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Multimeter and Field Transistor
The definition of hidden wiring multimeter is suitable for radio amateurs. The sensitive element for the search will have to be soldered with their own hands. In addition to the measuring device, a field transistor is useful. The main thing is that its shutter has a low discovery voltage and a small input container. For example, Soviet elements of the KP103 series or import 2SK241. As an instrument, it is permissible to use the old arrow tester.
The multimeter is translated into the measurement mode of greater resistance. Usually these ranges up to 200 kΩ or 2 MΩ. The device's probes are connected to the transition of stock source. The shutter remains hanging in the air. To increase the sensitivity of the search to it, a piece of wire should be soldered. Length and shape of the segment are selected by an experimental way. During the assembly of the device, care must be taken. KP103 - not the cheapest transistors. They are easily damaged by static electricity.
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Combined distorters of hidden wiring is a class of devices with several sensitive elements. For example, a metal detector and an electromagnetic detector in one compact housing. Two types of sensor, working at the same time, exclude disadvantages and errors of each other.
Combined devices cost more than their simpler fellows. A person who is looking for a network malfunction may at its discretion turn on or off one or another sensor type or use several simultaneously. It all depends on the experience with the detector and the status of the wiring under study.
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Folk and grandfathers search methods
Good devices for detecting hidden wiring cost big money. Therefore, it makes no sense to acquire them if you need to do a couple of holes in the wall. It is possible to find wiring at home with the help of grandfathers or people's ways.
These methods do not differ much accuracy and reliability of results. But allow you to determine the cable using the screwdriver. For folk detection methods, devices will be required as:
Additional Information. If you need to find the junction box, from which the wires are diverged, you can do without appliances. It will take a screwdriver with a monolithic handle. The box is an empty cavity. If you have a screwdriver with a screwdriver, then where solid concrete - the sound will be deaf, and where the box is ringing.
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Cable detection by a hearing aid
Old auditory models are able to effectively detect cables stitched into the walls. Examples of such devices include AK-1. The device is complemented by the "Phone" function. It is intended to make people with a weak hearing, without any interference to talk on the phone.
Working in this mode, the device is able to feel electromagnetic waves from wiring. To search, the device must be led by wall at the location of the alleged cable. According to the test, the current must occur during the discovery.
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Search for a radio receiver
The method on the principle of detecting the wire is similar to the previous one. The antennas of radio receivers capture the variables of electromagnetic fields with a frequency of 50 Hz. Therefore, the radio can feel the wire with a current, which is 30-50 mm at a distance. Cheap receivers with poor noise immigrability are especially sensitive.
Before searching in the wall, check the operation of the radio on the open wire. For example, on the table that feeds the table lamp. Apply the receiver to the conductor and configure to get the maximum sensitivity. Then, without changing the parameters of reception and volume, it is necessary to proceed with the search for the cable in the wall. It follows both the receiver itself and antenna, depending on what will be susceptible to interference.
Additional Information. The radio is capable of finding a short circuit in the wall. Wire with alleged KZ should be disconnected from the network. Then sue a signal from a powerful low-frequency generator and listen to the route receiver. A short circuit will be in the place where the beep will disappear from the generator. Similarly, it is also possible to find a breakdown between phase wire and grounding. However, the method will not work if the line has a gust. The chain must be closed.
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The method of detection of hidden wiring with a compass has a completely logical physical justification. The cable hidden in the wall creates an alternating electromagnetic field. It interacts with the constant field of the compass arrow and leads it in motion. To do this, the wire should not be punched so that the current creates the fields.
In fact, the method is doubtful. It can be tried, but it should not be seriously relying. The apartment wiring does not proceed quite large currents to create powerful electromagnetic fields. Forces that act on the arrow applied to the compass wall is not enough to displace it.
There is another problem. Household wiring emits a variable field. If the Compass's arrow could deviate from its impact, then it would move to the left, then right 50 times per second. It is hardly possible to notice the eye.
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App for smartphone
There are applications for smartphones, allowing to turn the device into a metal detector. For such a trick, the phone should be equipped with a magnetic sensor. This is a radio metal that is physically connected to the motherboard. Without this item, no application will make the smartphone show where the cable passes.
If the phone filling is equipped with a field sensor, then the method has the right to life. Its efficiency depends on the depth of the cable laying and the talent of programmers who have developed an application.
Separately, additional devices connected to the smartphone via USB are allocated. They contain the electronics needed to search for cables in the wall and output an informative picture on the screen of the phone, but there are significant money, and acquire such consoles in order to hang the picture - a dubious occupation.
Wiring search by a professional device with a fairly accurate accuracy ensures that you do not damage the cable in the wall. The detector must be a good quality, and you need to be able to use them correctly. Such devices are enough on the market, their search will not be difficult.
However, it makes no sense to buy professional equipment if you want to make several holes. In such a situation, it is easier to take advantage of the grandfathers or folk ways to search. But it is worth understanding that they cannot be 100% guaranteed that you will not get a drill to the wire and do not damage it.
The article is told about several ways to detect hidden wiring in the wall of an apartment or another room, an overview of the useful devices for relevant work has been carried out.
The benefits of hidden installation of wiring
Very often, climbing in an apartment or house, there is a problem associated with electrical wiring.
In very old housing, you can still find the external location of the wires, that is, they are simply fixed on the wall.
To track in this case, the location of the wiring will not be difficult because it can be seen.
But from the practice of such laying of wires, it was long ago refused to favor the hidden installation, in which the cables are stacked into special shoes, after close.
This is due to banal safety - the invisible wire is impossible to accidentally damage, but only in the case when they do nothing with the wall.
When maybe required information about the location of the posting?
During the repair, the walls are often required, and here the hidden wiring becomes a problem, especially if the cables have fallen a long time and the plan of electrification of the room is simply not.
In order not to damage the wiring during the work, its location should be known.
In general, such information may be required in the case of:
Redevelopment of electrification of the room (change in the location of sockets, switches, etc.);
Redevelopment of the room itself (making new openings - door, window);
The emergence of problems with the wiring (breakdown or kz);
Improving the interior by hiding various devices and furniture on the walls.
In case of replacement to know the location of the wiring and not necessarily, since the old will still be removed, so the network of the house is de-energized, and then the wires are simply pulling out of the strokers (they are usually attached, and to pull them out simple), after which the scheme will be excellent.
And then the owner is already to decide, lay a new cable in old shoes or cut new ones.
Information on the location of wiring within the walls is most often required when carrying out drilling work.
Next, consider what can be done to determine where cables are underway in the wall if there is no room planning.
Turn to the original source
Many know that according to PUE cables are placed only under right angles.
That is, the wiring is not located along the shortest path, it should only pass strictly horizontally or vertically, and the direction of the direction is made at an angle of 90 degrees.
This information is not enough to determine where the cable is laid, but in the future it will help at least understand how to search for wires from the outlet or junction box.
Special devices and their principles of work
To identify hidden wiring, you can take advantage of special electrical appliances - seekers, which are quite enough in the electric goods market.
It is noteworthy that in such devices, various principles of work are used, which is why they have their own advantages and disadvantages.
So, you can buy seekers:
Electrostatic . The operation of such devices is based on the capture of the electromagnetic field, which is formed in cables when the electric current is passed. Instruments that use this principle of operation are one of the most common and inexpensive. They allow you to accurately find the hidden wiring, provided that the walls under study are dry and not dying, and there are no metal structures in them;
Electromagnetic wiring seekers . They have the principle of determining the same as in electrostatic, that is, they determine the presence of an electromagnetic field. But they have one feature - the wiring that needs to be found should be under load, and it should be at least 1 kW. Therefore, before searching, you must first turn on something in the outlet, for example, an electric kettle, and after already determining the location of the cable;
Metal detectors . The peculiarity of such a device is that he himself creates an electromagnetic field. At the same time, the metal that fell into the zone of this field will cause it to change it, to which the device will react. This device is convenient because it does not require wiring. But at the same time, it will react to all metal elements in the wall - nails, screws, wire, etc. Professional models, unlike amateur, can determine what metal is hidden in the wall, which greatly facilitates the search.
Combined devices that use several principles of operation simultaneously are available, which increases the accuracy of the definition.
In addition, such devices often have additional functions that significantly expand their scope.
For example, the seeker can additionally help in determining the place of breaking of wiring or grounding, searching for phase wire, etc.
Below are several types of devices that the market now offers.
The first device is called "Search" and it looks like this.
This device uses the electrostatic principle of detection of hidden wiring.
It has 4 sensitivity modes, it is capable of detecting a cable at a depth to 7 cm. To alert, light and sound indication is used.
It has a number of additional features, it is very easy to use - select the mode (4th) is used to search for wiring and leading the device along the wall.
Note that certain factors may affect its operation (the presence of metal objects, high moisture of the wall).
In general, the "search" is quite acceptable and inexpensive for the detection of wiring, but it does not apply to professional devices.
A large number of analogues of such an appliance are produced - the same "woodpecker", but a number of people.
The second device - Mag-2 looks as follows.
It is combined and for detection uses electrostatic and electromagnetic principles.
It has two modes of operation - to detect the detected network without load, and with a load.
Alarm system is a movement. Refers to amateur options.
The next representative of the seekers is Chinese, he has no name, but there is a denoting index - La 1012.
This is a more advanced device equipped with displays to which all information is displayed.
It uses the electromagnetic principle of search, has a number of additional functions.
It applies to professional devices and is not cheap.
BOSH GMS 120.
Multifunctional professional combined device.
It is a metal detector to determine not only the depth of the cable, but also the material of its manufacture.
Equipped with an information display to output all information. It can also use the electrostatic principle to search. A fairly good and high-precision device.
What else can help in finding hidden wiring
Abovers were considered above, which can be purchased for personal use.
But it often happens that it is necessary to find wiring only once and for this spend on a special device - it is not advisable, but it is necessary to detect the wiring.
In this case, an indicator screwdriver can be helped. It is better, of course, to buy more modern, for example, such is a series of Chinese MS indicator screwdrivers, having a light-sound signaling.
But you can do and the usual probe with the LED indicator.
They work on the electrostatic principle, that is, they can detect the electromagnetic field emitted by the wiring under voltage.
In use, they are very simple - it is enough to make a finger to a special metal window (MS indicators) or touch the screwdriver sting (the usual indicator), and then simply drive a screwdriver over the wall.
In a place where the wire is laid, such indicators will start signaling.
The disadvantages of this method of definition include a relatively small depth of detection (up to 2 cm), as well as a strong error, that is, to accurately detect where the cable is lying - it will not work.
It will be possible only to determine the channel with a width of 10 to 20 cm. But this is often enough to perform installation work related to the drilling wall, you only need to do everything beyond the boundaries of a specific channel.
You can also accommodate the search for the search.
But only the device itself is not enough, the field transistor will still need (a great option - KP103). How to check the transistor multimeter read here https://elektrikexpert.ru/proverit-tranzistor-multimetrom.html.
To get a crawler, you need to connect the correct items correctly. This transistor has three outputs - stock, source, and shutter.
By the first two conclusions, connect the probe multimeter translated into an ohmmeter mode, and the polarity of unimportant.
The shutter will play the role of the antenna (which can be slightly lengthened).
Having built such a device, you can start searching - an antenna driver along the wall and see the readings of the multimeter - any deviations in the readings will indicate the location of the cable.
Help with the definition of hidden wiring can also help the smartphone with Mac or Android OS.
For them, in the application store, you can find the "Metall Detector" program or analog it.
The magnetic sensor built into the smartphone in combination with the specified software allows you to get a metal detector to be detected by the cable hidden in the wall.
But it should be borne in mind that it will react to all metal elements, so you can not apply it everywhere.
The search accuracy of the smartphone is sufficient to determine the channel in which the wiring is laid.
If these devices are not, then you can use alternative methods. And the first one is visual.
In the process of sealing strokers with cables, it is not always possible to do everything very smoothly.
Therefore, it is often possible to detect the location of the wiring along a small protrusion, but for this you need to carefully consider the room, and the wallpaper will have to be removed - the wall should be "bare".
Help in searching can and the usual radio receiver, which is not necessary to redo. It is enough to set the frequency of 100 kHz. And then take the receiver and go to search.
To detect the power of the antenna on the wall. The cable detection signal will increase noise from the speaker.
Accuracy, of course, not high, but to determine the channel with wiring is quite possible.
You can also use the old tape recorder or a cassette player, but for this you need to lengthen the wiring on the magnetic head. It is she who will be an antenna.
That is, we carefully remove the head from the player, we lengthen the wires, and then drive it along the wall.
Popular readers: how to choose a battery screwdriver, pros and cons of the device.
The same one who does not want to use the healthy means and has at least a small experience in electronics, can assemble a seeker independently, and for this it will be required not so many components.
The easiest appliance consists of the same field transistor, an ohmmeter (arrow), dynamics from a stationary phone and power source.
The diagram of the device is such.
After connecting all the circuit components, everything can be "reflected" - enter into the body, set to turn off or increase the number of indicators.
But we note that this device is the easiest, which means that he does not have a high sensitivity, although it will still detect the channel in which the cable is laid.
In general, the schemes for which you can assemble a hidden wiring seeker a large amount, with a different complexity of the design and principles of work.
But we believe that the above mentioned methods are enough to discover the hidden wiring in the apartment without searching for many details and soldering the scheme.
Any repair work related to the drilling and fines of the walls require a clear understanding of where the wires are laid. How to find a hidden wiring?
In order not to spoil the design of the interior with non-psychic wires, they are placed in the stages and are closed with a layer of plaster solution or alabastra, after which the surface is leveling. According to the rules of the electrical installation device (PEU), the cable can only be laid under right angles. The diagonals, intersections or other "degrees" are categorically prohibited. But the understanding that the current conductive lived is connected to the outlet / switch vertically or horizontally, does not particularly help in search. Yes, and attempts to identify the disguised penabile are visually not always completed successfully. It remains to resort to the help of special devices.
1. Indicator screwdriver
Using an indicator screwdriver to search for hidden wiring
A simple and affordable tool that reacts to electromagnetic waves coming from a cable under voltage. To find the wiring hidden in the thickness, you need to learn it close to the wall and take it into different directions. When detecting conductive veins, the LED will turn around.
As a rule, the indicator screwdriver has three modes: "O" - the definition of the phase in the supply network, "L" - the search for electrical wiring with low sensitivity, and "n" - the search for electrical wiring with increased sensitivity. The coverage area of the device is 10-20 cm.
The minus of the indicator screwdriver is that it is rather "weak", and it is unlikely to detect the wiring laid in the wall by more than 1-2 cm. And, of course, find a de-energized or shielded wires.
2. Electromagnetic wiring detector
Electromagnetic wiring detector Wall Scanner 80
This device "sees" the electromagnetic field of the wires under a voltage of 1 kW and above. So, before you look for an electrocabyle, it needs to be loaded. That is, turn on all the bulbs and connect home appliances to sockets. This is a prerequisite. The depth of the search for an electromagnetic wiring detector varies from 1 to 7.5 cm.
In circulation, the detector is extremely simple. There are two LEDs on its building - blue / green and red. The first lights up when the device finds an electromagnetic field, that is, the cable. And the second - when the distance to its source is reduced to a minimum.
The most advanced devices have several sensitivity modes. But it should be borne in mind that the more sensitive detector, the more he is subject to interference, which can cause, in particular, metal objects. The surface humidity also prevents the search for hidden wiring. So, if the wall for one or another reasons otried, the research is better to postpone it until its complete drying.
To accurately determine where the wiring is located, it is advisable to measure the wall several times
3. Metal detector
Metal Detector Handmade Garrett THD
The device reacts to aluminum or copper core inside the electrocable, for which The detector creates its own electromagnetic field, which in turn creates an induced electromagnetic field around the conductors nearby from the detector emitter. And this field is captured by the electromagnetic receiver of the detector.
The metal detector allows you to search for not only a serviceable stress, but also a torn cable, and this is an unconditional advantage. The disadvantage of the device is that it reacts to any metal objects - nails, self-tapping screws and, of course, reinforcement. So look for wiring in concrete walls with it is not worth it.
The most advanced metal detectors can "understand" which metal is detected. This facilitates the process of finding wiring
4. Universal detector
This device is able to find not only hidden wiring (both under voltage and without) but also react to hidden walls of foreign materials - non-ferrous and ferrous metals, wood, plastic, etc.
Universal Detector Bosch Universaldetect
The universal detector is a rather complex device that generates a magnetic field and capturing its changes when passing through various environments. For example, iron enhances the electromagnetic field, and aluminum - reduces. Analyzing the resulting signals, the device brings fairly accurate data.
It is worth noting that in the study of the walls there may be some difficulties. For example, if two cables are laid nearby, the detector can define them as one. But this "sin" only household models. Professional are distinguished by maximum accuracy. True, they stand quite expensive. Buy high-tech device for one-time definition of hidden wiring is irrational.
Before searching for hidden wiring it is desirable to test the detector on the design in which the position of the electrical wiring is already known
Digital Multimeter Fluke 117
The multimeter is a universal device that combines a voltmeter, ammeter and an ohmmeter to measure the voltage, current force and resistance, respectively. To search for hidden wires it will have to be modified by connecting the field transistor. It has three conclusions - shutter, source and stock. The shutter serves as an antenna (therefore it is usually lengthened), and to source and runoff connect the multimeter.
When searching for wiring, the instrument is transferred to the operating mode of the operating system, not paying attention to the polarity. The antenna is brought to the wall and conduct research, tracking the current readings. Any change of their change will indicate the close location of the electrocable.
6. Radio reception
If there is not one of the instruments described above at hand, but an ordinary radio can help to determine the place of wiring at least approximately. Its include and configure the frequency of 100 Hz. The elongated antenna is used as probe. If the wall is discovered in the thickness of the wall, the characteristic interference will appear - crackle, amplifying as the cable approaches the cable. By the way, the same effect will give a working hearing aid.
7. Smartphone / Tablet
For mobile phones and tablets operating on Android or iOS OS, there are special applications that convert the device into a kind of metal detector. For research, you need to run the program and bring the device to the wall surface. With the built-in sensor, it will find a cable ... or any other metal object. As far as accurate will be obtained, it is difficult to say, and yet this method has the right to life.
The best detectors determine the object lying close to the surface. The deeper the cable is closed, the harder it is to determine its location.