Replacing electrical wiring is currently needed by half of all dwellings in the country. If the previous replacement was held more than 7 years ago, then the question of changing all wires is very acute. Old materials are simply not adapted for those needs that are characteristic of today’s homeowners in the field of energy consumption. Very often there is such a method of laying wires as their “deaf” walled into the walls. At the same time, it is simply impossible to assess the condition and level of reliability of the wires. If there is a gap (which happens so rarely), you have to break through the wall.
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To properly put the wiring in the walls, you need to know the technology of this work. Competent laying involves outstanding special grooves. The wires are recessed in them. You can make these grooves using a stroborer or perforator. When laying wires in the grooves, metal tubes or corrugated hoses are used. Wiring stretches inside their channels. This approach excludes that the wire will be damaged during operation. Such protection completely eliminates the occurrence of a fire due to the fire of the wires. The use of such additional materials entails and increase expenses. But you can never save safety.