Welding place is not full, solder treatment is not clean, leakage brush antirust paint.
Should be welded in time, the medicine skin knocked off, brushed on the antirust paint. The needle body bends and the vertical degree of installation exceeds the allowable deviation.
The needle weight should be newly straightened, meet the requirements before installation. The protection distance between the independent lightning rod and its grounding device and the entrance to the road or building is not in accordance with the regulations.
The distance should be greater than 3m, when less than 3m, should take the uniform pressure measures or the laying of pebbles or asphalt land.
If the lightning rod is not grounded, it will be a lightning needle, so care must be taken.
The role of lightning rod is not as good as the average person thinks, whether the building is struck by lightning there are many factors, there is no lightning rod is just one of them. Many ancient buildings were built on top of the mountain and did not suffer lightning strikes, but were prone to lightning strikes in nearby valleys because of different soil resistivity. There are many gravel on the mountain, the soil resistivity is large, there are many rivers in the valley, the soil water is large, the soil resistivity is small.