Categories supply. Reliability and importance.

Reliability and Importance will be given an explanation of this concept for a better understanding of these divisions, groups. It should be mentioned that this classification of the categories contained in the Regulations for Electrical or SEP for short. Why are these groups and what they were invented? First of all, for optimality, safety, economy. And this in the first place, the foundation of the foundations.

After all, electric loads, can be divided by some arbitrary importance. That is, the reliability of power supply, for example houses, will be explicitly different from the hospital, where the availability of electricity depends on a lot of lives (intensive care unit and operating, for example), or the chemical industry, which eventually can turn into a terrible accident.

In connection with this inequality, the reliability of power supply and the importance of electrical load that feed electricity have been developed these categories. They are defined in the design, based on the standard documentation and tech. part of the project. There are only three simple words, and they can be described as very important, just the important and all the rest.