The 2.5mm² BV single core solid copper conductor PVC insulated cable is a standardized electrical wire specifically designed for low-voltage power distribution scenarios in house wiring and construction. With a rated voltage of 450/750V and packaged in 100m rolls, it has obtained dual international certifications (CE and RoHS), making it a common choice for home improvement electricians, building contractors, and electrical project procurement. It provides a stable and reliable solution for power supply in residential sockets, lighting circuits, and small commercial equipment. In terms of core materials and performance, the cable conductor is made of high-purity electrolytic copper (purity ≥99.95%) with a single-core solid structure (diameter approximately 1.78mm). It features extremely low resistivity (≤0.017241Ω·mm²/m at 20℃), resulting in low current transmission loss and no easy insulation aging due to heating during long-term use. Its long-term allowable current-carrying capacity is about 25A under standard conditions (20℃ environment, single-core laying), which can support a maximum load of 5.5kW under 220V voltage. This makes it suitable for low-to-medium power devices commonly used in residences, such as living room chandeliers, bedroom wall lamps, study sockets (connecting computers, printers, etc.), as well as small POS machines and office desk lamps in commercial scenarios, avoiding conductor overheating or insulation softening caused by overload. The insulation layer is made of modified PVC (polyvinyl chloride) material, optimized to adapt to the characteristics of residential and construction environments. Its flame-retardant grade meets the GB/T 18380.1-2008 Class C standard, with an oxygen index ≥24%. It can self-extinguish within 60 seconds in the vertical combustion test without molten drips, effectively preventing flames from spreading along the cable and reducing the risk of electrical fires in areas such as kitchens and bedrooms. At the same time, it has excellent electrical insulation performance, with a volume resistivity ≥1×10¹²Ω·cm and a dielectric loss tangent ≤0.08 at 50Hz. Even in humid environments such as bathrooms and kitchens, it can isolate the conductor from the external environment to avoid electric leakage accidents. In addition, the insulation layer has a long-term operating temperature of 70℃ and can withstand 160℃ for 5 seconds during short-term overload, coping with local high temperatures caused by equipment heat dissipation or seasonal temperature changes without insulation cracking or hardening. Its smooth surface reduces friction during piping, improving construction efficiency, and its service life can reach more than 20 years. In terms of safety and compliance, the rated voltage of 450/750V accurately matches the common electricity demand in residential and construction scenarios: "450V" refers to the insulation voltage between the conductor and the ground or neutral wire, and "750V" is the insulation voltage between two conductors. It can not only stably carry 220V single-phase power supply (such as residential sockets and lighting) but also reserve a 20%-30% safety margin to cope with voltage fluctuations when multiple devices are running simultaneously in summer, avoiding insulation breakdown. The CE certification ensures it complies with the EU Low Voltage Directive (2014/35/EU), with indicators such as electrical safety, mechanical performance, and electromagnetic compatibility meeting European market access standards, allowing direct use in building projects exported to Europe. The RoHS certification ensures that the content of six hazardous substances such as lead, cadmium, and mercury in the insulation layer and conductor accessories is below the limit, with no heavy metal pollution, making it suitable for scenarios with high environmental protection requirements such as residential bedrooms, children's rooms, and commercial offices, ensuring indoor air quality and human health. In practical application and construction adaptability, the cable adopts standardized color identification (red/yellow/green for live wires, blue for neutral wires, and yellow-green for ground wires), complying with international wiring standards. Electricians can quickly identify the purpose of wiring, reducing the risk of wrong connection (such as avoiding equipment burnout caused by confusing live wires and neutral wires). The 100m/roll packaging specification is convenient for cutting and using in small-area wiring for home decoration and can also meet the local construction needs of small-scale building projects, avoiding material waste due to excessively large packaging specifications. At the same time, the cable can be seamlessly adapted to common electrical accessories such as copper terminal blocks, PVC/metal conduits, and residual current devices, and can be integrated into existing residential and building electrical systems without additional modification, reducing the complexity of project construction. Each batch of cables undergoes multiple tests before leaving the factory, including conductor resistance test, insulation thickness test (standard thickness 0.8mm, tolerance ±0.1mm), and voltage resistance test (1.5kV/1min no breakdown), ensuring stable and consistent performance and laying a solid foundation for safe electricity use in residences and buildings.