Why is it not strictly buried in the wall of plastic insulated wires?
(1) After long-term use of plastic insulated wires, the plastic will age and crack, and the insulation level will be greatly reduced. When the line is short-time overload or short-circuit, it is easier to accelerate the insulation damage.
(2) Once the wall is wet, it will cause large-area leakage and endanger personal safety.
(3) The plastic insulated wire is directly buried in the dark, which is not conducive to line maintenance and maintenance.