How to pass wires through walls?
How is it necessary to pass wires through walls?
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How is it necessary to pass wires through walls?
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The passages through the walls are made of materials that do not support combustion. Their purpose is mechanical protection and ease of maintenance and replacement of wires during further operation. It can be metal pipes, asbestos, special self-extinguishing plastic pipes.
You can learn more about laying cable through the wall from our article: https://our.electricianexp.com/en/kak-provesti-kabel-cherez-stenu.html