What's the difference between the wires in the south and those in the north? Why is the power cut off as soon as it gets cold in the south?

Generally, when it is cold in the south, there will be no power failure. You mean the freezing disaster in Guizhou, Hunan?

That's because it's not ordinary rain, it's freezing rain, and it freezes when it touches something.

1. It always rains in winter in the south, but it doesn't snow. If it is freezing rain, it will turn into ice if it falls on the wire. If there is too much ice, it is easy to break the power cord. It hardly rains in winter in the north, but it snows. Then the snow doesn't melt all winter, and it falls off as soon as the wind blows.

2. Most of the ground wires are buried in the north, and most of them are open wires in the south, which are easily affected by the weather.