1. Poor Construction Quality
One of the main reasons for failures is poor construction quality. The issues are quite common and can be summarized as follows: First, the depth of the cable trench is insufficient, and the sand-covered bricks are not laid according to standard specifications. Second, the production and installation of the ducts do not meet required standards—especially at both ends, which are often improperly constructed. Third, when laying cables, the pre-buried pipes are not installed correctly. These pipes are often too thin and have a slight curvature, making it difficult to pull the cables through, leading to "dead bends" at the bottom of the foundation. Lastly, the crimping of wire terminals and the insulation wrapping are not thick enough, which can cause short circuits after long-term operation.
2. Low Material Quality
Another major factor contributing to failures is the use of substandard materials. Over the past few years, many faults have been traced back to poor-quality cables. For example, some wires contain less aluminum than required, making them harder and more prone to damage. Additionally, the insulation layers are often too thin, which increases the risk of electrical failure over time. This problem has become more widespread in recent years.
3. Poor Quality of Supporting Projects
Courtage light cables are typically installed on sidewalks. However, if the sidewalk construction is poor, it can lead to ground subsidence, putting pressure on the cables and causing damage to the armor layer. This issue is especially common in northern regions, where cold weather causes the soil and cables to freeze together. When the ground sinks, it puts strain on the base of the garden lamp, and during heavy summer rains, water can erode the base area, further increasing the risk of failure.
4. Unreasonable Design
Unreasonable design is also a significant cause of problems. On one hand, many garden lights are overloaded due to the expansion of urban infrastructure. New streetlights are often placed close together, and the load from nearby advertising systems is sometimes connected to the same circuit. This results in excessive current, overheating of cables and terminals, reduced insulation, and even grounding short circuits. On the other hand, the design of the lamp posts often overlooks the space needed for cable joints. After the joints are wrapped, the covers are frequently left open, and the cable length is sometimes insufficient, leading to improper joint connections that contribute to failures.
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