Answer: Cable joint failures are often caused by improper installation, poor workmanship, environmental factors, or using low-quality jointing materials. The most critical factor is the installation process itself, which can introduce voids or moisture. To prevent this, it's essential to use a qualified jointer and the correct tools for crimping, compression, and splicing. Our professional equipment, such as hydraulic crimping tools and cable cutting tools, ensures precise and secure connections. We recommend using high-quality jointing kits, such as heat-shrink or cold-shrink types, that provide a robust seal against moisture and environmental contaminants. Regular maintenance and testing, including insulation resistance and partial discharge (PD) tests, are also crucial for early fault detection.