A distribution box, also known as a distribution board or panel, is the central unit that distributes incoming electrical power to various circuits. Each outgoing line can be individually. But here's the thing many people overlook: the incoming lines feeding the distribution box are just as important as the box itself. Get this part wrong, and you're setting yourself up for all kinds of troubles down the line. Each. The Distribution box system diagram mainly includes the following parts: Incoming line part: Displays the incoming line source of the distribution box, which may be a single-line incoming line or multiple-line incoming lines (such as normal power supply and backup power supply), and marks the. 1) Generally, the incoming line of power distribution box adopts five wire system, that is, a, B and C three-way phase line (the general color is yellow, green and red), one way zero line (the color is light blue) and one way ground line (the color is yellow with green stripes).
