What is the danger of an extension socket built into the wall?

In the modern world, the use of extension cords and tees is due to a large number of equipment. Many owners think about built-in and secret sockets. What are the dangers of such decisions?

The main danger in using extension cords is the possibility of a sudden fire, so you need to understand this phenomenon in more detail.

If there is one single outlet in the wall, then plug something more powerful into the network than it will not work. In this way, the safety function is performed. But if there is an extension cord in the wall, then often people load it with overwhelming tasks, including a refrigerator, a microwave and a food processor in one place. Because of this, the temperature of the case and the extension cord wiring rises significantly, it can melt and ignite.

Ideally, with such overloads in the network, a circuit breaker should operate, in practice this happens much less often. Often its inoperability is the work of the electricians themselves, who, without replacing the wiring, decide to replace the machine from 10A to 16, or even 25A, so that the fuse does not work at all.

Sometimes the circuit breaker even of high-quality companies does not work due to marriage. Typically, about 5% are for marriage from expensive electrical panels, while budget ones increase this number by several times.

Further, there may be such an option in which the circuit breaker once worked properly, but after repeated trips it simply failed. But sometimes the worst thing happens - the switch does not have time to trip before the wiring lights up.

Long-term exposure to high temperatures, approximately 75 degrees, leads to the fact that contact compounds are oxidized and in these places there is an increased risk of overheating and ignition.

Constant heating of the cable insulation leads to the loss of its basic properties, so part of the electricity is converted into heat, which heats the wire itself. There is also the option of short-term but periodic overloading of the extension cable, which inevitably leads to destruction of the insulation. In this case, the machine does not have time to work due to short intervals.

Thus, it turns out that extension cords have more minuses than pluses. Their careless and thoughtless use will lead to a fire or destruction of insulation, which is not immediately noticeable due to a hidden installation.