1、 The manufacture and installation of distribution box and switch box shall meet the following requirements:

1. The distribution box shall be made of iron plate or other fire-proof insulating materials to achieve ventilation, heat dissipation, rain proof and fire-proof.

2. The electrical appliances in the box shall be installed on metal or other insulating plates and fastened in the box. The metal base plate shall be electrically connected with the box body.

3. Rubber insulated cables shall be used for the incoming and outgoing lines, and the incoming and outgoing ports shall be set at the lower end face of the box body, with protective rings added.

2、 The rated value and action setting value of the main distribution box shall be compatible with the rated value and action setting value of the branch switch.

3、 The electrical components and leakage protectors used in the distribution box shall meet the quality requirements of the national standard.

4、 The leakage protector shall be used in strict accordance with the product manual, and shall be tested and recorded regularly.