When installing the three-phase meter box (split meter ready board), first use the ventilation component to ventilate the box to prevent excessive distilled water. Remember that there are ventilation components at the lower and upper ends of the cabinet door and back plate, and between the top plate, cabinet door and back plate. With the help of the heat generated by the electrical components, the space inside the box can be dehumidified, which can not only prevent the corrosion of the metal parts inside the box, but also prevent the occurrence of leakage current. Secondly, the cable branch box with base can isolate the soil moisture by filling the base with fine sand and burying the base to a certain depth below the ground surface, so that the rising moisture in the soil does not enter the box. Then it can be assembled directly. You know, its combined design makes installation easier. At the same time, the combined design not only makes the installation simple, but also makes it easy to replace the box parts, simplifying the storage of spare parts.