The lifespan of waterproof cables is generally between 10 and 30 years, which is greatly affected by materials, usage environment, and maintenance conditions. ‌

Key influencing factors and differences in lifespan

• ‌Material Type‌：

  • The design life of cross-linked polyethylene (XLPE) insulated cables can reach 30 years and perform stably in standard environments. ‌
    

  • Polyvinyl chloride (PVC) sheathed cables typically have a lifespan of 20-25 years, but waterproof types such as IP68 rated structures have a lifespan of approximately 10 years (such as waterproof connectors). ‌
    

  • Polyurethane sheathed cables have a lifespan 3-5 years longer than ordinary PVC and stronger water resistance. ‌
    

  • YJY cable (polyethylene sheath) has a longer lifespan of 2-3 years than YJV cable (polyvinyl chloride sheath), especially in cold and waterproof scenarios. ‌
    

• ‌Usage environment‌：

• A dry and clean environment (such as an indoor power distribution room) can be maintained for 20-30 years. ‌
  

  • Damp, corrosive, or high-temperature environments (such as coastal areas and chemical plants) may shorten to 10-15 years. ‌
    
    

  • Underwater or high mechanical stress scenarios (such as deep-sea equipment) typically have a lifespan of around 10 years, depending on the armor layer and sealing design. ‌
    

• ‌Load and maintenance‌：

  • The lifespan under rated load is close to the upper limit (20-30 years), but long-term overload will accelerate aging and reduce it to less than 10 years. ‌
    

  • Regular testing (such as insulation resistance testing) can extend the service life; Neglecting maintenance will result in an actual lifespan lower than 50% of the theoretical value. ‌