The power distribution system at the construction site shall implement hierarchical power distribution, and a general Chongqing distribution box (or distribution room) shall be set. A sub Chongqing distribution box shall be set below the general Chongqing distribution box, a switch box shall be set below the sub Chongqing distribution box, and electrical equipment shall be set below the switch box.

When we design the dustproof and waterproof distribution box, the higher the protection level, the higher the performance requirements of the waterproof distribution box. Sometimes, in order to highlight the protection effect, we specially design some rain caps, which can more effectively prevent the infiltration of water or dust, and it is easy to separate the box cover from the box, so that users can also carry out processing and printing operations conveniently.

The selection of size is the first thing we need to consider when selecting the waterproof distribution box, and it is also an important part of the whole purchase process. Secondly, we should consider the impact of material selection on the function of the waterproof distribution box. In terms of materials, we will provide some information and comparison documents on how to correctly select the waterproof distribution box. The sealing ring plays an important role in the protection function of the waterproof distribution box.

The sealing ring of distribution box is a good protection. The sealing ring plays a very important role in protecting the protection grade of waterproof distribution box. For a long time, the continuity of the protection level depends on the characteristics of the sealing ring. Fix the sealing ring in the correct position. EPDM material plays a good protective role in resisting most of the widely used chemicals because of its excellent chemical corrosion resistance. However, the chemical corrosion resistance of the sealing ring also varies greatly according to its material, so the direct reaction between the chemical composition and the sealing ring is an effective method to confirm the effect.

The performance of waterproof distribution box varies according to the material of different sealing rings, which determines the protection degree of electric sealing box. When selecting the sealing ring, compare the elasticity of each material component, the impact when contacting with many chemicals, and the impact when cold and hot. It is important that the waterproof distribution box and sealing ring can get good results only when they have common resistance to the same chemical substance.