Thhn/Thwn electrical wire is a high-quality wire specially designed for house wiring. It has cross-sectional specifications including 1.5mm², 2.5mm², 4mm², and 6mm², adopts PVC insulation material, and has a rated voltage of 600V. It can perfectly adapt to the household electricity environment and provide stable and safe power support for various household appliances and lighting equipment.​ The 1.5mm² wire performs excellently in residential lighting systems. Lighting fixtures in residences, such as living room chandeliers, bedroom ceiling lamps, and kitchen downlights, usually have low power. The 1.5mm² wire is sufficient to carry their working current, ensuring the normal switching on and off of the lights. Whether it is daily home lighting or night lighting for getting up at night, it can be reliably guaranteed. Moreover, its thin wire diameter is convenient for threading in walls and ceilings without taking up too much space.​ The 2.5mm² wire has a wider range of applications and is suitable for most small household appliances in bedrooms and living rooms. For example, electric fans, humidifiers, and small heaters in bedrooms, as well as TVs, set-top boxes, and stereos in living rooms. These devices have moderate power, and the 2.5mm² wire can supply power stably, avoiding interruption of equipment operation due to line problems. At the same time, this specification of wire can also be used for lighting and exhaust fan lines in some bathrooms, and can maintain good insulation performance in humid environments.​ The 4mm² wire is suitable for higher-power household appliances, such as microwave ovens and electric ovens in the kitchen, and cabinet air conditioners in the living room. Microwave ovens and electric ovens require large power output during operation, and the 4mm² wire can meet their current needs, ensuring the smooth progress of the cooking process. The power of cabinet air conditioners during operation is relatively high, and this specification of wire can ensure the stability of power transmission during cooling or heating, avoiding tripping due to overload.​ The 6mm² wire has the strongest current-carrying capacity and is mainly used for high-power electrical circuits in residences, such as electric water heaters, instant water heaters, and floor heating systems. Electric water heaters consume a lot of power during heating, and the 6mm² wire can bear their large current load. As an important equipment for heating in winter, the floor heating system needs continuous and stable power supply. This specification of wire can provide reliable guarantee for it, ensuring the normal operation of home heating.​ In terms of material, the conductor of this wire is made of high-purity copper, which has excellent conductivity, can reduce energy loss during current transmission, and improve power efficiency. The PVC insulation layer not only has good insulation performance, which can effectively prevent electric leakage accidents, but also has certain temperature resistance and corrosion resistance. It can maintain stable performance under different environmental conditions in residences and extend the service life of the wire.​ In short, Thhn/Thwn electrical wire (1.5mm² - 6mm²) has become an ideal choice for house wiring with its various specifications, excellent materials, and reliable performance, providing a solid foundation for household electricity safety and a comfortable life.

White Black Red Color House Wiring Electrical Cable Summary​ The white, black, and red color-coded house wiring cables, available in 1.5mm² and 2.5mm² with copper conductors, including VOB, H05V-U, and H07V-U variants, are tailored for safe and efficient residential electrical systems. These cables combine high-purity copper conductors with durable insulation, ensuring reliable performance in home environments.​ Color coding (white for neutral, black for live, red for specific circuits like lighting or appliances) simplifies installation, reducing errors and enhancing safety. The 1.5mm² cables are ideal for low-current applications such as lighting circuits and small devices, while 2.5mm² options handle higher loads in power outlets and kitchen appliances.​ VOB, H05V-U, and H07V-U models meet stringent standards: H05V-U (300/500V) suits indoor use, H07V-U (450/750V) for heavier home loads, and VOB variants offer robust insulation for general household wiring. All feature flame-retardant, moisture-resistant PVC insulation, protecting against overheating and environmental damage.​ Compliant with international certifications, these cables ensure safety in residential setups. Their flexibility eases routing through walls and conduits, making them a top choice for new homes or renovations. Reliable, color-coded, and sized for diverse needs, they deliver consistent power distribution for modern households.

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.

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.

The yellow-green electric wire for house wiring sets, specifically designed as flexible ground cables in sizes 6-25mm², plays a critical role in ensuring electrical safety within residential buildings. These cables are engineered to provide a reliable path for fault currents to earth, protecting occupants and equipment from electrical shocks and damage. Their distinct yellow-green color coding, mandated by international standards, ensures easy identification as ground conductors, reducing the risk of misconnection in complex wiring systems. At the core of these ground cables is a high-purity copper conductor, chosen for its exceptional electrical conductivity and flexibility. Copper’s low resistance allows fault currents to flow quickly to earth, triggering protective devices like circuit breakers or fuses to disconnect the power supply promptly. The conductors are stranded—composed of multiple fine copper wires twisted together—to enhance flexibility, making them easy to route through tight spaces, around corners, and within wall cavities common in house wiring. This flexibility is particularly valuable during installation, as it reduces the risk of conductor damage and simplifies connections to grounding terminals in outlets, appliances, and distribution boards. The insulation material used is polyvinyl chloride (PVC), which offers a balance of durability, cost-effectiveness, and electrical insulation properties. PVC insulation protects the copper conductor from physical damage, moisture, and contact with other conductive materials, ensuring the ground path remains uncompromised. It operates effectively within typical residential temperature ranges (-15°C to 70°C), making it suitable for both indoor dry locations and moderately humid areas like kitchens or bathrooms. The insulation is also resistant to common household chemicals and UV radiation, ensuring long-term performance without degradation. The size range of 6-25mm² caters to varying electrical loads and wiring requirements in houses. A 6mm² cable is ideal for smaller circuits, such as lighting or low-power appliances, where the potential fault current is lower. Larger sizes, like 10mm², 16mm², 25mm², are designed for higher-power circuits, including those supplying large appliances (e.g., electric stoves, water heaters) or the main grounding conductor connecting the distribution board to the earth electrode. This versatility allows the same yellow-green ground cable system to be used consistently throughout a house, maintaining safety standards across all circuits. Compliance with international standards is a key feature of these cables. They adhere to specifications such as IEC 60228 (Conductors of insulated cables) and IEC 60446 (Identification of conductors by colours or numerals), which mandate the yellow-green color for protective conductors. This standardization ensures compatibility with global electrical codes, making them suitable for use in residential buildings worldwide. Compliance also guarantees that the cables meet rigorous safety tests, including insulation resistance, voltage withstand, and flame retardancy, ensuring they perform reliably in fault conditions. In house wiring, the primary function of these yellow-green ground cables is to create a low-resistance path to earth for fault currents. For example, if a live wire comes into contact with a metal appliance casing, the ground cable diverts the current to earth, preventing the casing from becoming energized and posing a shock hazard. This rapid fault clearing also minimizes the risk of electrical fires, as excessive current is quickly interrupted by protective devices. Additionally, the ground cable helps stabilize voltage levels in the electrical system, reducing the impact of power surges on sensitive electronics. Installation flexibility is another advantage. The stranded copper conductors and PVC insulation allow the cables to be bent and routed without compromising performance, adapting to the unique layout of each house. They can be installed in conduit, behind walls, under floors, or in ceiling cavities, integrating seamlessly with other wiring components. The yellow-green color ensures that electricians can easily distinguish the ground cable from phase and neutral conductors during installation and maintenance, reducing errors. In summary, the yellow-green electric wire for house wiring sets—flexible ground cables in 6-25mm² sizes—are essential components of residential electrical safety systems. Their copper conductors, PVC insulation, standardized color coding, and size versatility ensure reliable fault current dissipation, easy installation, and compliance with global safety standards. By providing a dedicated path to earth, these cables protect occupants, appliances, and the building itself from electrical hazards, making them indispensable in modern house wiring.