BVR wire (Copper Core Polyvinyl Chloride Insulated Flexible Wire) is a specialized soft wiring solution featuring a conductor composed of stranded fine copper wires. Its core advantage lies in superior flexibility; compared to single-core solid wire, it effortlessly navigates complex installation environments such as conduits and cable troughs. This makes it particularly effective for wiring within distribution boxes or concealed layouts with multiple turns, significantly reducing construction difficulty and enhancing efficiency. Widely used in residential decoration and construction projects for lighting and socket fixed installations, proper termination is crucial for safety. To ensure long-term reliability and prevent overheating caused by poor contact, the stranded conductors must be tinned or crimped with copper lugs when connecting to switches or sockets.