Soon began to decorate the circuit will be a problem, need to change new line, but workers drag along while, broken electricity practice how also! Don't come out. When decorating, and clearly see worker carefully in the electrical practice of the casing outside on, why still pull don't come out?

In the reform of regulating circuit. Construction personnel will be put on the casing outside the wire, so as to change in the future when the old line will be out. If the same root casing in go line too much, or go line turn blind Angle. Will appear when changing, difficult to hauled phenomenon. In addition, the casing itself and poor quality. Buried in inside wall body appears after the crack collapse. Also come to the same situation.