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In order to find the wire under the plaster (or wallpaper), it is not at all necessary to call the master, sometimes it is enough to make a little effort and all the hidden electrical wiring will be known to you. Next, we will look at the best devices for detecting hidden wiring in the wall, as well as several methods that will solve the problem without the use of special devices!
Main reasons for searching
There are many reasons to look for hidden electrical wiring in a concrete wall yourself.
Most often, the problem occurs in such cases:
- Apartment redevelopment. For example, you decide to cut a doorway in another place, but do not know where exactly the current-carrying wires pass.
- Chain break. One of the most painful reasons, because. in this case, you will need not only to find the electrical wiring in the wall, but also the place where the neutral or phase wire is broken.
- The need to drill a partition. Suddenly you have to connect a wall sconce either.
- Interest in existing communications. If you have just bought a new home and have no idea which cable and how it passes through the walls and ceiling, where the junction box is installed, etc.
In all these cases, you can call a wizard who will give you an accurate idea of \u200b\u200bthe power line, or you can try to independently search for wiring in the wall. Do you prefer the second option? Then look further on how to determine the location of the wire under the tiles, drywall and other types of finishes.
Devices to help!
So, if you just need to find the wiring in the apartment, then it’s enough. A simple homemade product is made from improvised means and will allow you to detect a live conductor up to 10 cm under a decorative finish. On the Internet you can find many schemes by which you can make a simple detector, we have provided you with one of them in the article to which we referred.
An example with a homemade metal detector
If the issue of money is not particularly important for you, then it is better to choose a special device for detecting hidden wiring in the wall, which will allow you not only to determine with high accuracy where the cable is located, but also the exact location of the fault if there is a burned out or punched area. The best in terms of price and quality is a device called "Woodpecker" or signaling device E-121. Using this detector, you can not only track the exact location of the electrical wiring in the wall, but also find the place where the electrical conductor is broken. The depth of work is 7 cm, which is quite enough for amateur use and detection of a broken core even under a plasterboard wall.
Device "Woodpecker" in action
Another, no less suitable device for detecting hidden wiring in the wall is the MS signaling device. Chinese testers have their own characteristics and features of work, so you need to get used to them. The problem is that the products react equally to both metal parts (for example, a nail) and a current-carrying core. To properly operate the tester, you must learn to distinguish signals from each other. That is why professional electricians bypass them, although for home use the option is pretty good. Another important drawback of the devices is that if the cable is protected by a foil screen, it will not be possible to detect it. Such signaling devices have a lot of negative reviews on the Internet, only for the reason that they are difficult to use, otherwise this is a good option for determining electrical wiring. 
How to use a probe?
Also, to detect hidden wiring in the wall, devices such as: POSP-1, GVT-92, Bosch DMF 10 zoom, GVD-504A, VP-440 are used. All of them have proven themselves well for finding a broken conductor, as well as detecting electrical wiring under plaster. 
Video instruction manual for the detector
I would like to pay special attention to thermal imagers. These devices allow you to track not only where the broken core is located, but also to find and the quality of the wiring itself in the panel house. Of course, their cost is prohibitively high, but there is a service for calling a master, for which you will pay about 2,500 rubles. In this case, you will be given a full report on what the existing power line in the rooms is like and whether there is a burnt conductor somewhere.
In addition, you can find out where the wire is in the wall using an indicator screwdriver. This method of searching for wiring is only suitable if the conductors are energized shallowly in concrete.
Turning on the logic
Any electrician knows what is carried out strictly in a vertical and horizontal position. In other words, the conductors run parallel and perpendicular to the floor.
Based on this, the following observations can be made for yourself:
- Above the sockets and switches, the line runs straight up, it is strictly forbidden to drive a nail here.
- Usually the line is pulled at a distance of 15 cm from the ceiling (or floor), here, too, it is not worth doing various kinds of work.
- Based on all the installed electrical points, you can visually present the picture and sketch where the wire is located in the wall.
We draw your attention to the fact that such visual representations are an extremely unsafe option. All your sketches on paper will have to be confirmed at least with a do-it-yourself metal detector, but it is better to use special devices and indicators.
grandfather methods
Of course, earlier, to detect wiring in the wall, they did without devices, while safely finding the entire power line under wallpaper, tiles and plaster. How did our grandfathers and great-grandfathers do it?
We bring to your attention the three most simple options that will allow you to find the wiring yourself:
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