Some differences of power distribution box

1、 What is the difference between power distribution box and lighting distribution box?

A: it's mainly the difference between power and lighting; The simple difference is: the power supply without zero line is the power box, and the power supply with zero line is the lighting box.

2、 Under what circumstances is the distribution box regarded as the power box?

Answer: the power box can only be equipped with three-phase power lines, not lighting (single-phase socket, single-phase exhaust fan, etc.) lines, because there is no zero line. The power supply and outgoing line are four wire system, in the form of 3 + 1 (L1 phase, L2 phase, L3 phase, PE grounding wire, such as YJV-3 * 70 + 1 * 35). The outgoing line of power box can only be equipped with power box, not lighting box.