1. When there is a problem with the wiring in the distribution box, we can deal with the wiring of the air switch after power failure.

2. When there is something wrong with the air switch, we can cut off the power supply first and then replace it.

3. When zero row or ground row is damaged, we can replace and repair Zero row and ground row after the power is cut off.

When the power is cut off, we need to replace the box with a new one.

Through the above aspects, the basic problems of the distribution box can be solved.