Some electrical installation workers often do not pay attention to the installation quality when laying wires:

No bushings are installed where insulating bushings should be used; junction boxes are not installed where junction boxes should be used; even at the wire joints, the splicing method is not used, but the illegal hook-like connection method is used. The contact resistance of this hook-like connection method is very large, and the continuous heating when energized will cause the nearby wooden boards to gradually dry, carbonize, burn, and cause fires.

The heating of wire joints will not only cause a large amount of power loss, but also seriously affect the normal operation of electrical equipment. In the light of the increase in the working current in the line, the life of the electrical equipment will be shortened, and in the worst case, the ongoing production, scientific research, and surgery will be suddenly interrupted. And other activities can cause fires and electric shocks, etc., causing immeasurable losses. In fact, there are two main functions of the terminal wiring block: 1. It is easy to organize the wires. If each terminal is marked, it will be clearer and more beautiful and easy to maintain. Otherwise, a large number of wires are entangled and cannot be distinguished; 2. Used for Control the closing and disconnection of the wiring, which is convenient for use and operation.