Professional Answer: Many underground cable failures are preventable with proper planning and high-quality equipment. Common causes include moisture ingress, thermal overloading, and excavation damage. Prevention starts with using high-quality cable jointing kits and moisture-resistant insulation. To prevent thermal overloading, cables must be sized appropriately for their load and laid with proper spacing. Our underground cable laying equipment and cable rollers help ensure correct installation depth and spacing, preventing physical damage and stress. We also offer specialized tools and cable locators to conduct pre-excavation surveys to avoid damaging existing utilities. Proper grounding is also essential for safety and to prevent voltage surges. Regular testing post-installation, using our insulation testers, helps detect early signs of degradation.