(1) All distribution boxes shall be marked with their names, uses and shunt marks.

(2) All distribution box doors shall be equipped with locks, and distribution box and switch box shall be in the charge of special personnel.

(3) All distribution boxes and switch boxes shall be inspected and maintained once a month. The inspection and maintenance personnel must be professional electricians. During inspection and maintenance, insulating shoes and gloves must be worn as required, and electrical insulating tools must be used.

(4) During the inspection and maintenance of the distribution box and switch box, the corresponding power switch of the previous level must be cut off and cut off, and the power cut sign board shall be hung. Live working is strictly prohibited.

(5) All distribution boxes and switch boxes must be operated in the following order during use:

• Power transmission operation sequence: general distribution box - distribution box - switch box, power failure operation sequence: switch box - distribution box - general distribution box
• Except for emergency measures in case of electrical failure.

(6) When the construction site stops working for more than one hour, the power switch box shall be powered off and locked.