The power distribution box incoming and outgoing line structure is configured as the following manners that: the box body of the power distribution box is divided into an independent incoming line switch room, an independent watt hour meter room and an independent outgoing. The power distribution box incoming and outgoing line structure is configured as the following manners that: the box body of the power distribution box is divided into an independent incoming line switch room, an independent watt hour meter room and an independent outgoing. Check electrical parameters: First understand the basic electrical parameters of Distribution box so that you can have a general understanding of the capacity and performance of the distribution box. Analyze the incoming line part: Determine the incoming line source of the distribution box and. The utility model discloses a power distribution box incoming and outgoing line structure. Power supply is received from LT panel and distributed to the outgoing feeders for utilization. Single Phase Distribution Box generally consists of Double Pole MCBs, Single Pole MCBs, and RCCBs. It is the first step in preparing a critical response plan, allowing you to become thoroughly familiar with the electrical distribution system layout and design in your facility.