We often see all kinds of wire boxes in our daily life. How many specifications are there?

1、 How many specifications of wire box

There are three types of common boxes in the market, namely 118, 86 and 120, but the sizes of different types of boxes are also different. For example, the size of 86 type has two types, one is 86 times 86 square, the other is 146 times 86 rectangle. 120 type of box is more common in Japan, which can be divided into 74 times 120 and 120 times 120. 118 type is divided into 156 times 74 and 200 times 74.

2、 What are the types of junction boxes

1. Ordinary junction box has simple structure but poor corrosion resistance. It can only be used in places with excellent environment, and its junction base needs to be firmly connected with the protective tube, so as to ensure excellent contact performance.

2. The plug-in junction box is characterized by convenient disassembly and can avoid dust damage to the body of construction workers. Because of its special structure, in a dusty and dry environment, it can prevent dust from entering the junction box and affecting its normal operation.

3. The splash proof junction box is fixed on the box with screws, and the cover needs to be fixed with a chain. When in use, the cover can be opened, but it will not fall off. Therefore, it is usually used in a humid or humid environment, and according to relevant experiments, it can withstand 5 mm of precipitation per minute.

4. Explosion proof junction box can be divided into two types, one is explosion-proof type, and the other is increased safety type. Its interior is equipped with a wiring base made of special materials, which can play the effect of sealing and isolation after connecting wires.