(1) The construction power distribution system should be equipped with a main distribution box, a distribution box, and a switch box, which should be arranged in a hierarchical manner according to the "general distribution box" sequence and form a "three-level. (1) The construction power distribution system should be equipped with a main distribution box, a distribution box, and a switch box, which should be arranged in a hierarchical manner according to the "general distribution box" sequence and form a "three-level. Power Distribution Board Design refers to the planning and arrangement of electrical components within a panel that distributes electrical power across different circuits. It involves the placement of breakers, contactors, busbars, terminals, protective devices, and wiring in a structured and safe. You can see many kinds of distribution boxes in homes, offices, and factories. Each type handles different amounts of electricity. They are made from metal or plastic. The distribution box industry helps many users. Also called a distribution board, panel board, breaker panel, or electric panel, it is the central hub in an electrical system that divides incoming power into various subsidiary circuits.