The 3 Core Solid Copper Cable 2.5mm² (BV Wire 3*2.5) is a core cable specially designed for house wiring and general electrical installation. With three 2.5mm² solid copper conductors as the core, matched with high-quality PVC insulation layer and in a 100m roll form, it combines stable conductivity, safe insulation, and convenient construction characteristics. It is compatible with most low-voltage residential power distribution systems and can be used as the main wiring for circuits such as lighting, sockets, and small household appliances. Through the multi-core integrated design, it simplifies the wiring process and reduces the number of wall conduits. At the same time, relying on the mechanical strength of the solid copper conductor and the protective performance of the PVC insulation, it ensures the long-term safe operation of the residential electrical system, making it an optimal choice for electrical installation in new houses, old house renovations, and small commercial spaces.​ In terms of specification parameters, the "3×2.5mm²" structure of the cable accurately matches the multi-circuit power supply needs of residences: the three independent solid copper conductors all have a cross-sectional area of 2.5mm². The rated current-carrying capacity of a single conductor complies with low-voltage power distribution standards, which can stably support 16A-20A current, meeting the electricity needs of residential lighting, ordinary sockets, and small household appliances (such as rice cookers and microwave ovens). The 3-core design integrates the live wire, neutral wire, and control wire (or ground wire, which can be flexibly allocated according to wiring needs), eliminating the need to lay multiple separate cables. This greatly simplifies construction processes such as wall conduit threading and ceiling wiring, reducing installation complexity and labor costs. The overall rated voltage of the cable meets the requirements of low-voltage power distribution systems (usually 450/750V), among which 450V is the normal working voltage, compatible with the 220V single-phase power supply network of residences, and the 750V insulation withstand voltage value provides an additional safety margin. It can resist electrical stress caused by voltage fluctuations and avoid the risk of insulation breakdown. In addition, the 100m roll specification is suitable for the wiring dosage needs of residences. It can meet the partial or overall wiring of small and medium-sized residences (such as two-bedroom and three-bedroom houses), and is convenient for cutting according to needs, reducing cable splicing and the risk of joint faults. At the same time, the roll design is conducive to storage and transportation, preventing the cable from being knotted or damaged during construction.​ In terms of material and structural design, the cable uses high-purity solid copper (purity ≥99.95%) as the conductor core. Solid copper material has three core advantages: First, it has excellent electrical conductivity with extremely low resistivity (about 1.72×10⁻⁸Ω·m), resulting in little energy loss during current transmission. It can reduce electricity waste in long-term use and at the same time reduce conductor heating, avoiding insulation aging caused by overheating. Second, it has high mechanical strength, which is not easy to deform during fixed installation such as conduit threading and wall embedding in house wiring. It can maintain a stable wiring shape and make closer contact with terminals and sockets, reducing contact resistance and preventing local heating. Third, it has strong corrosion resistance, and its surface is not easy to oxidize, so it can be used for a long time in humid residential environments (such as kitchens and bathrooms), extending the service life of the cable. The insulation layer is made of flame-retardant PVC material, which has good electrical insulation, temperature resistance, and flame retardancy: Electrical insulation can effectively isolate the current conduction between conductors and between conductors and the outside world, preventing short circuits or electric leakage. Temperature resistance ensures that the cable works stably in an environment of -30°C to 70°C, adapting to temperature changes in different areas of the residence (such as stuffy ceilings in summer and cold balconies in winter). Flame retardancy complies with relevant national standards, and it can self-extinguish when exposed to fire, avoiding the spread of flames and adding a guarantee for residential electricity safety.​ In terms of application scenarios, relying on the advantages of 3-core integration and 2.5mm² specification, this cable fully covers the needs of house wiring and small electrical installation. In new houses, it can be used as the main wiring for lighting and ordinary sockets in living rooms and bedrooms. The three cores correspond to the live wire, neutral wire, and ground wire respectively, meeting the safe electricity use specifications. In areas such as kitchens and bathrooms, it can be used to connect the power supply circuits of small and medium-sized household appliances (such as dishwashers and electric water heaters). The combination of solid copper conductors and flame-retardant PVC can cope with humid and high-temperature environments. In old house renovations, it can directly replace old cables. Through the 3-core design, the number of wall grooves is reduced, and damage to the original decoration is minimized. In addition, this cable is also suitable for electrical installation in small commercial spaces (such as convenience stores and small offices) as the power supply line for lighting and cash register equipment. The 100m roll can flexibly adapt to the wiring length needs of different spaces.​ In terms of construction and safety characteristics, the solid copper conductor of the cable is easy to strip and wire, compatible with common terminals, sockets, and switches. Installation can be completed without special tools, improving construction efficiency. The 3-core parallel arrangement structure is not easy to entangle when threading through conduits, and can easily pass through narrow wall pipes or ceiling gaps. The surface of the insulation layer is smooth, with little friction with the inner wall of the conduit, reducing the resistance of threading. In terms of safety, in addition to flame retardancy and insulation performance, the cable also passes strict quality inspections (such as conductor resistance test, insulation withstand voltage test, and flame retardant test) to ensure compliance with national electrical safety standards. During use, problems such as insulation aging and conductor breakage are not easy to occur, providing long-term and reliable protection for the residential electrical system.