BV household electrical wire is a copper conductor PVC insulated cable designed specifically for fixed wiring installations, with a rated voltage of 450/750V. It is widely used in indoor fixed electrical circuits in residential buildings, commercial premises, and small industrial sites. Its core structure consists of a single solid high-purity electrolytic copper conductor, with cross-sectional areas ranging from 0.75mm² to 10mm², catering to the power needs of different electrical appliances. For instance, the 2.5mm² specification can carry a continuous current of 24A, suitable for lighting circuits and general sockets, while the 4mm² version can support high-power devices such as air conditioners and electric water heaters. The conductor is made of 99.95% high-purity electrolytic copper, which, after annealing, combines excellent conductivity (conductivity ≥58MS/m) and mechanical strength, ensuring efficient and stable current transmission with reduced energy consumption. The outer insulation layer is made of temperature-resistant PVC material, with a uniform thickness (0.6mm-1.2mm, depending on the specification). It has an insulation resistance of ≥100MΩ and can withstand a 2kV power frequency withstand voltage test, effectively isolating current and preventing short circuits. The PVC insulation layer also features flame-retardant properties (compliant with UL94 V-0 standards), which can self-extinguish quickly after the removal of an open flame, reducing fire risks. It operates within a temperature range of -15℃ to 70℃, adapting to most indoor environments. As a cable dedicated to fixed wiring, the solid conductor structure of BV wire gives it high rigidity, making it suitable for embedding in walls, threading through pipes, or laying along trunking, without deformation due to long-term fixed installation. The surface of the insulation layer is printed with clear markings, including specifications, voltage rating, certification logos (such as GB 5023, IEC 60227), and production information, facilitating construction identification and quality traceability. It comes in various colors (red, blue, yellow, green, etc.), allowing differentiation between phase wires, neutral wires, and ground wires in line with electrical standards, reducing wiring errors. In practical applications, BV wire is a fundamental wiring material for home decoration, commonly used to connect distribution boxes to sockets, lamps, switches, and other devices in each room, providing a stable main line for the entire electrical system. The product undergoes rigorous quality inspections, including tests on conductor resistance, insulation thickness, and aging resistance, ensuring reliable performance during long-term fixed use. It is an ideal choice for fixed wiring, balancing safety, durability, and economy.