1. Garden lights with poor construction quality
The proportion of failures caused by construction quality is relatively large. The main manifestations are: first, the depth of the cable trench is not enough, and the sand covering bricks are not constructed according to the standard; second, the production and installation of the aisle pipe do not meet the requirements, and the two ends are not made into a mouthpiece according to the standard; third, when laying cables Dragging on the ground; Fourth, the pre-embedded pipes of the foundation were not constructed according to the standard requirements, mainly because the pre-embedded pipes were too thin, and with a certain degree of curvature, it was quite difficult to pass the cables, and a "dead bend" appeared at the bottom of the foundation; It is because the crimping of the wire lug and the thickness of the insulation wrap are not enough, and it will be short-circuited after a long time of operation.
2. The material is not up to standard
Judging from the failures dealt with in recent years, the low quality of materials is also a big factor. The main performance is: the wire contains less aluminum, the wire is relatively hard, and the insulation layer is thin. This situation has become more common in recent years.
3. The quality of supporting projects is not too hard
Garden light cables are generally laid on the sidewalk. The construction quality of the sidewalk is poor, and the ground sinks, causing the cables to be deformed by force, resulting in cable armor. Especially in the northeastern region in the alpine region, the arrival of winter makes the cable and the soil form a whole. Once the ground subsides, it will be strained at the bottom of the garden light foundation, and when there is a lot of rain in summer, it will burn at the root of the foundation.
4. Unreasonable design
On the one hand, it is overloaded. With the continuous development of urban construction, garden lights are also continuously extended. When a new garden light is built, it is often connected to whichever circuit is closest to the garden light. In addition, the advertising business has developed rapidly in recent years, and the advertising load is also connected to the courtyard accordingly. On the lamp, the load of the garden lamp is too large, the cable is overheated, the wire lug is overheated, the insulation is reduced, and the grounding short circuit occurs; After the cable head is wrapped, most of them cannot even close the door. Sometimes the length of the cable is not enough, and the joint is not made to meet the requirements, which is also the cause of the failure.