Today, there are many specialists of various professions for whom the chair is an invariable attribute of effective and high-quality work. If you are engaged in such activities that force you to spend the whole day at the computer, you need to purchase a comfortable chair, since you will have to be in it a lot of time. In order not to cause spinal deformity or other diseases, you need to choose chairs responsibly and very seriously.
It is not necessary to take lightly on this issue, because your health largely depends on it. In no case can you save on a working chair, because treating diseases is always much more expensive. Continue reading
If we consider the load breaker in more detail, we can make an important conclusion that it is just an ordinary disconnector that is equipped with the simplest arcing chamber.
As statistics show, load switches began to be used approximately sixty ago in an electrical installation from 3 to 10 kV when using an expensive switch is generally uneconomical.
In those days, this unit was made in the form of the simplest mechanism for separation and high-quality fuse, which is designed for high loads. This combination was intended to turn off and on the idle currents, as well as turn on the load currents, as a result, the fuse served an important role in protecting the electrical installation from overload current and sudden short circuit. Continue reading