How to determine the wiring in the wall with the help of an indicator screwdriver
A screwdriver with a transparent handle, in which a simple device is hidden, is home to almost everyone, and if not - for sure there is a neighbor. A screwdriver works by catching an electromagnetic field that is radiated by wiring, in three sensitivity options.
Remember!"O" means the phase in the network, "L" - the ability to determine the wiring with low sensitivity without direct contact, "H" - the detection of hidden wires in the wall with a high level of sensitivity.
The advantages of this method of detecting hidden wiring in the wall are that it is very simple in execution, the device costs a penny and is also suitable for determining the integrity of the electrical circuit.
However, the indicator has disadvantages: even if the wire is successfully detected under the layer of plaster, the device will show a dangerous zone of 20-30 centimeters. On the accuracy of speech can not be( the indicator is rather weak and fully corresponds to its price).In addition, with this screwdriver you will not be able to detect wires with a protective screen or wires without voltage.
Surface Detection Device In modern building stores, you can easily find devices designed to find hidden wires in a thick wall. The most common among them - "Woodpecker", or, more scientifically - "signaling device hidden wiring E121."The device managed to prove itself reliable, accurately identifying electrical wires in the depth of the wall to 7-8 centimeters.
As an alternative to the domestic device, Chinese MS devices can be used: for example, the MS-58M tester is able to accurately determine wiring and even simple metal objects. And it plays both in plus, and in a minus - if not to learn to distinguish a signal from a wire and from a usual nail, you risk to receive many false positive signals for the subject of the latent conducting. But the object, even a large, wrapped in foil, the tester will not notice because of the screening, which creates this thin reflective layer.
There are similar reviews about the devices MS-48, MS-18.On the one hand, it is easy to use them, but on the other hand it will require certain knowledge and skill. For example, in a sufficiently humid room or if the wall is wet, the indicator will glow almost constantly. But following the rules of operation you can get an accurate result with minimal effort.
Interesting! There are also more complex and functional devices that allow you to accurately detect disruptions and damage to the network. As a rule, they are expensive, but in everyday life they are practically not used - they are used by professional workers. A simple version of such a device is used by telephonists to detect damage to their network.
How to find hidden wiring in the wall in a grandfather's way?
Only it seems that, having a large selection of modern technological methods of detecting hidden wires, one can forget about how ingenious our grandfathers were. In fact, it turns out that the knowledge of simple and proven by years can very much help out in a situation where there are no special devices at hand, and it is urgently necessary to find an electric grid.
- Radio. A frequency of 100 kHz will allow you to find the wires if you put a radio on it and guide the receiver along the wall - where there will be wires, there will be a characteristic noise and crackling from the speakers.
- Wallpaper. Brilliant, as they say, simply - if the definition of hidden wiring is needed, at least for cosmetic repairs with the replacement of wallpaper, you can deal with this problem immediately after removing the old wall decoration. Most likely, you will find the putty stitches, but even if they are not there, rough bands will be visible on a flat surface. It is there that the wiring is located.
The breakage of the electrical cable under the plaster layer can be determined by checking the indicator with a faulty switch or socket. A disconnected switch in good working order will show you one contact, included - always two.
Important! The above rule does not apply to switches with illumination.
With regard to the outlet: if the indicator screw does not respond to any of the contacts, the phase is likely to be damaged. If the device, as expected, reacts to one of the contacts, ignoring the second one, but the devices included in the socket do not work - the zero is broken.
On open wires to detect the gap can be a simple way of serifs. After disconnecting the network, it is necessary to make notches on the cable insulation( one near the junction box, the other at a distance of about two meters from it).If the tester shows low resistance, then this section of the network is not damaged.
Determining hidden wiring in a wall with or without devices - the process is somewhat time consuming and will take some time, but it is worth remembering that the safety of the person doing repairs and the safety of housing depend on it. Therefore, do not be lazy, determine all the communications hidden in the walls, and electrical wires will not cause unpleasant surprises.
