When we buy something, we all want it to last a little longer. No one wants to buy something that hasn't been long. It's either broken here or there, but we can't just rely on its original life. We should also think of some ways to prolong the life of the product. Therefore, the same is true for pro

If the electrical box can be used in a normal environment, users should make the following adjustments when selecting it:1. First, the ambient temperature can not be higher than 40 ℃ or lower than - 5 ℃.2. The surrounding environment can meet the pollution level.3. The place where it is installed ca

Three phase five wire system includes three phase lines (a, B, c) and neutral line (n); And ground wire (PE wire). The neutral line (N line) is the zero line. When the three-phase load is symmetrical, the sum of the current vectors flowing into the neutral line of the three-phase line is zero, but f

1. The whole electrical box is small, too compact, components density is large, lack of some space. Some electrical boxes have components on both sides, which is not conducive to heat dissipation and easy to be disturbed.2. The design layout and component layout of the electrical box are incorrect a