Energy saving distribution box "just know"

Standby circuit concept:

1. The incoming line of the distribution box is often referred to as dual power supply and standby circuit, such as fire power supply, civil air defense power station, emergency power supply, etc. The distribution box is equipped with release and can be switched automatically. It is also called dual power supply automatic switching box.

2. The outgoing line of the distribution box is to empty several circuit breakers in case of adding circuits in the future. The increased capacity has been considered in the capacity of the distribution box.