How is the grade planning of general distribution box carried out?

1. Generally speaking, the distribution box in some enterprise substations can be regarded as the upper level distribution box.

2. In some power distribution cabinet and motor control center, the distribution box is generally called secondary distribution box.

3. If the position of the distribution box is far away from the power supply center, it belongs to the third level distribution box.

The above three points are the planning of the distribution box's own level