The distribution box is divided into power distribution box and lighting distribution box, both of which belong to the final level equipment of the distribution system. Both are strong currents.
照明配电箱进线 220VAC/1 或 380AVC/3 ，电流在 63A 规格以下，负载主要是照明器（ 16A 以下）及其它小负荷，
The incoming line of the lighting distribution box is 220VAC/1 or 380AVC/3, with a current of less than 63A. The load mainly consists of lighting fixtures (below 16A) and other small loads,
Air conditioners in civil buildings can also be powered by lighting distribution boxes. The selection of lighting distribution circuit breakers is generally distribution type or lighting type (with medium or small short-term overload multiples).
动力配电箱进线 380AVC/3 ，主要作为电动机等动力设备的配电，照明配电总进线电流大于 63A 时，也划为动力配电箱。动力配电断路器选择配电型、动力型（短时过载倍数中、大）。
The incoming line 380AVC/3 of the power distribution box is mainly used for the distribution of electric motors and other power equipment. When the total incoming current of the lighting distribution line is greater than 63A, it is also classified as a power distribution box. The power distribution circuit breaker should be of distribution type or power type (medium to high short-term overload ratio).
The main differences are:
The function is different, and the power distribution box is mainly responsible for the power supply or the joint use of power and lighting, such as exceeding the 63A level, non terminal distribution, or the upper level distribution of the lighting distribution box; The lighting distribution box is mainly responsible for the power supply of lighting, such as ordinary sockets, motors, lighting tools, and other small load electrical equipment.
The installation methods are different, although both are terminal devices of the distribution system, the installation methods are also different due to their different functions. The power distribution box is floor mounted, while the lighting distribution box is wall mounted.
The biggest difference between power distribution boxes and lighting distribution boxes due to different loads is that they are connected with different responsibilities. Therefore, power distribution boxes are mostly three-phase load led out, while lighting distribution boxes have single-phase power led out.
Due to different capacities, the power distribution box has a larger capacity and more circuits than the lighting distribution box. The main loads of the lighting distribution box are lighting fixtures, ordinary sockets, and small motor loads. The load is relatively small, mostly single-phase power supply, with a total current generally less than 63A and a single output circuit current less than 15A, while the total current of the power distribution box is generally greater than 63A.
Due to different volumes, the two types of distribution boxes have different internal circuit breakers due to their different capacities, resulting in differences in box volume. Usually, the volume of power distribution boxes is larger.
The requirements vary, and lighting distribution boxes generally allow non professional personnel to operate, while power distribution boxes usually only allow professional personnel to operate.
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