Drilling a hole in the wall to hang a picture, or to attach the bracket to the TV, everyone runs the risk of damaging the wiring, hidden under a layer of plaster. Therefore, even before the electrical installation should prepare its detailed plan.
But hardly anyone is so cautious. Get away with no wiring plan will help a special device - an indicator of hidden wiring. But to buy it for single use hardly makes sense. Therefore it is possible to resort to other methods of detecting the wiring in the wall.
1. Visual inspection of the wall
Carefully examining the wall, can be seen the characteristic convexities on the plastered surface. They are easier to detect if the wall was only painted. The presence of dense wallpaper greatly complicates the task.
We'll have to turn to other options.
2. indicator screwdriver
This inexpensive tool that is used to detect the phase voltage when working with electrical wiring, and can help in the search for hidden wiring.
To do this, you need a screwdriver could move along the wall in the place to drill. If there is a layer of plaster laid electrical cable, screwdriver indicator lights up. But only if the wire is not too deep.
3. Radio
If the house overlooked the old pocket radio, the radio is capable to catch at long wavelengths, it can also help in the search for hidden wiring. It should be set to a frequency of 100 kHz, and then they need could move along the wall, where it is planned to drill a hole.
If this place is really run wires, the speaker of the receiver will start to emit a characteristic crack. To effect was more pronounced, it is recommended to include household electrical appliances. current flowing through the wire will produce higher levels of electromagnetic interference.
General tips and tricks
Approximately assumed where the concealed wiring, it is possible, knowing the characteristics of its mounting. As is known, the cables in the walls is recommended to be laid horizontally from one junction box to the other.
And from them to the line of switches and sockets made positioned vertically. Thus, directly it is not suitable for drilling a wall above or below the outlets and switches.
Chances damage the electrical cable, as well as shock a person. However, to rely on those rules hidden wiring should not be. Often the electrical cables in the thickness of the walls arranged diagonally to save. Therefore, it is better not to risk it and use special instruments to determine the hidden cables in the wall - concealed wiring detectors.