This single-core building wire is engineered exclusively for indoor power transmission in diverse building environments, with core technical specifications that align with global low-voltage electrical standards while addressing practical construction and usage needs.
Rated Voltage: Set at 600V, this parameter complies with the IEC 60227 and NEC 310 low-voltage power distribution system requirements. It is not only compatible with 220V single-phase circuits (the standard for residential and commercial lighting, sockets, and small appliances) but also adapts to 380V three-phase power systems commonly used in small industrial workshops (e.g., for powering small air compressors, water pumps, and 1-3HP motors). This wide voltage range eliminates the need for separate wire purchases for different power systems, enhancing its versatility across scenarios.
Cross-Sectional Specifications: The product covers three industry-standard cross-sectional areas, each precisely calibrated to match specific load demands. The table below details the key parameters of each specification:
Temperature Rating: The insulation layer is rated for 90°C continuous operation, with a short-term overload temperature resistance of 130°C. This exceeds the 60-75°C rating of ordinary PVC-insulated Building wires, making it suitable for installations near heat sources (e.g., kitchen ovens, server racks in computer rooms) without compromising safety.
The conductor is the "heart" of the wire, and its material and structure directly determine conductivity,
Flexibility, and durability.
High-Purity Copper Material: Made from electrolytic copper with a purity of ≥99.95%, this conductor ensures minimal electrical resistance. Compared to copper-clad aluminum (CCA) or low-purity Copper Conductors, it reduces energy loss during current transmission. For instance, when powering a 10-meter LED light strip (20W) with a 2.0mm² wire, the voltage drop is only 0.03V—negligible enough to maintain stable lighting brightness and avoid dimming. In long-distance wiring (e.g., 50 meters for commercial building corridors), the low DC resistance (≤8.21Ω/km for 2.0mm²) ensures that the voltage at the load end remains within the safe operating range of electrical devices.
Multi-Strand Twisted Structure: Unlike single-strand solid conductors (which are rigid and prone to breaking in tight spaces), this wire uses a multi-strand design. The 2.0mm² and 4.0mm² specifications use 19 strands, while the 6.0mm² uses 37 strands—all twisted in a uniform pitch to enhance flexibility. The minimum bending radius is only 6 times the wire’s outer diameter (e.g., a 2.0mm² wire with an outer diameter of ~3.5mm has a bending radius of ≤21mm). This allows easy routing in narrow or complex spaces, such as wall gaps (often ≤50mm in residential construction), ceiling interlayers, and behind furniture—significantly reducing construction time and the risk of conductor breakage during installation.
The insulation layer acts as a "protective shield" for the conductor, and its material properties are critical for safety and longevity.
Modified PVC Formulation: The insulation is made from modified PVC resin, enhanced with high-temperature stabilizers (calcium-zinc composite stabilizers) and halogen-free flame retardants (magnesium hydroxide). This formulation ensures structural stability at 90°C continuous operation—preventing insulation softening, cracking, or melting that could lead to short circuits. In short-term overload scenarios (e.g., the 1-2 second heat surge when a 3kW electric water heater starts), it can withstand 130°C without degradation.
Electrical Insulation Performance: At room temperature (25°C), the insulation resistance is ≥10¹⁴Ω·cm, and the dielectric strength is ≥20kV/mm. These values far exceed the industry minimum (insulation resistance ≥10¹²Ω·cm, dielectric strength ≥15kV/mm), effectively isolating the conductor from the external environment and preventing electric leakage. For example, in humid bathrooms (relative humidity ≥80%) or basements, the insulation remains intact, avoiding leakage risks that could cause electric shocks or equipment damage.
Environmental Resistance: The PVC insulation also has moderate acid and alkali resistance. It can withstand exposure to mild cleaning agents (e.g., the sodium hypochlorite-based cleaners used in commercial buildings) or slight moisture without peeling or degradation. This extends the wire’s service life to 25+ years in typical indoor environments—twice the lifespan of ordinary 60°C-rated wires.
To ensure consistency in performance, the wire undergoes a strict, multi-step production process with rigorous quality checks at each stage.
Copper Wire Drawing and Annealing: High-purity electrolytic copper ingots are drawn into fine copper wires of specific diameters (0.37mm, 0.52mm, 0.46mm) using a continuous wire-drawing machine. After drawing, the copper wires are annealed in a nitrogen-protected furnace at 400-450°C. This process softens the copper (reducing brittleness) and restores conductivity—critical for maintaining the conductor’s flexibility and electrical performance.
Stranding: The annealed fine copper wires are twisted into Stranded Conductors using a high-speed stranding machine. The machine ensures uniform strand pitch (12-15 times the conductor diameter) to prevent strand separation and ensure consistent flexibility. For the 6.0mm² specification (37 strands), a double-layer stranding process is used: inner strands are twisted first, then outer strands are twisted in the opposite direction to enhance structural stability.
Insulation Extrusion: The stranded conductor is fed into an extrusion line, where modified PVC material is extruded around it to form the insulation layer. The extrusion temperature is precisely controlled (160-180°C for the PVC melt) to ensure uniform thickness (0.8-1.2mm, depending on the cross-sectional area) and no air bubbles—air bubbles could weaken insulation performance. After extrusion, the wire is cooled in a water bath to solidify the insulation.
Quality Testing: Every batch of wire undergoes multiple tests before leaving the factory:
Conductivity Test: Measures DC resistance to ensure it meets the ≤8.21Ω/km (2.0mm²), ≤4.11Ω/km (4.0mm²), and ≤2.74Ω/km (6.0mm²) standards.
Insulation Test: Uses a high-voltage tester to verify dielectric strength (≥20kV/mm) and insulation resistance (≥10¹⁴Ω·cm).
Flexibility Test: Bends the wire 100 times at the minimum bending radius to check for conductor breakage or insulation cracking.
Temperature Resistance Test: Places the wire in a 90°C oven for 168 hours, then tests insulation integrity and conductivity—no degradation is allowed.
The wire’s combination of flexibility, high-temperature resistance, and multi-specification coverage makes it suitable for three core building types:
In homes, the wire forms a layered power supply system to match different room functions and appliance powers:
2.0mm² Specification: Used for lighting circuits throughout the house (bedrooms, living rooms, kitchens). It powers ceiling lights, downlights, and small appliances like desk lamps, routers, and set-top boxes. Its small cross-section and flexibility make it easy to route through ceiling interlayers and wall cavities.
4.0mm² Specification: Matched with socket circuits in kitchens, bathrooms, and balconies. It can safely carry medium-power appliances such as washing machines (1.5-2kW), refrigerators (0.8-1.2kW), and electric water heaters (2-3kW). The high-temperature resistance is particularly useful in kitchens, where the wire may be near ovens or stovetops.
6.0mm² Specification: Dedicated to high-power appliances like air conditioners (2.5-5kW) and electric water heaters (3-4kW). It is wired separately from other circuits to avoid overload—for example, a 1.5-ton air conditioner (≈3kW) draws ~13.6A, well within the 35-45A capacity of the 6.0mm² wire.
In commercial spaces, the wire adapts to high-density electrical demands and diverse equipment:
2.0mm² Specification: Powers office lighting (fluorescent tubes, LED panels) and sockets for computers, printers, and phone chargers. Its low resistance ensures stable power for sensitive electronic devices, preventing voltage fluctuations that could damage equipment.
4.0mm² Specification: Used for conference room projectors (0.5-1kW), small split air conditioners (1.5-2kW), and shop cash registers. It is also suitable for socket circuits in retail areas, where it can handle multiple devices (e.g., display lights, small fans) simultaneously.
6.0mm² Specification: Meets the needs of high-power commercial equipment, such as store freezers (1.5-2.5kW), display cabinets with heating functions (2-3kW), and office server racks (3-4kW). The 90°C insulation resists heat generated by server racks, ensuring long-term safety.
In workshops (e.g., metalworking, woodworking), the wire supports both power and control systems:
2.0mm² Specification: Wired for workshop lighting (high-bay LED lights) and control circuits (sensors, switches). Its flexibility allows routing along machine frames without interfering with equipment operation.
4.0mm² Specification: Used for powering small tools (e.g., electric drills, grinders) and auxiliary equipment (ventilation fans, small pumps). It can handle the intermittent load of power tools, which often draw higher current during startup.
6.0mm² Specification: Connected to main power devices such as small lathes (1-2HP), milling machines (2-3HP), and air compressors (3HP). The 600V Rated voltage is compatible with 380V three-phase power, ensuring stable current transmission for continuous machine operation.
The wire’s packaging is designed to protect the product during transportation and storage, while also facilitating easy identification and use on construction sites.
Inner Core Packaging: Each wire is wound onto a sturdy plastic spool (diameter: 300mm for 2.0mm²/4.0mm², 400mm for 6.0mm²) with a cardboard flange. The spool is made of high-impact polypropylene (PP), which resists cracking during handling. The wire is wrapped in a transparent polyethylene (PE) film to prevent dust, moisture, and scratches. Each spool contains a fixed length: 100 meters for 2.0mm² and 4.0mm², 50 meters for 6.0mm² (the heavier 6.0mm² wire uses shorter spools to reduce handling weight).
Outer Carton Packaging: Multiple spools (usually 5-10, depending on specification) are packed into a corrugated cardboard carton (thickness: 5mm) with reinforced edges. The carton is printed with clear product information, including:
Product name: Single-Core Flexible Pure Copper Building Wire
Specifications: Cross-sectional area, strand count, rated voltage, temperature rating
Batch number and production date (for traceability)
Safety certifications (e.g., CE, UL, GB)
Handling instructions: "Keep Dry," "Avoid Heavy Impact," "Store in Cool Ventilated Area"
Additional Accessories: Each carton includes a user manual (in English and local languages, depending on the market) that details installation guidelines, load capacity charts, and safety precautions. For bulk orders, a delivery note and certificate of conformity (CoC) are also included— the CoC verifies that the batch meets all technical standards.
To ensure the wire reaches customers in good condition and on time, we partner with leading logistics providers and offer flexible shipping options.
Domestic Shipping (e.g., Within the US, EU):
For small orders (1-10 cartons), we use express services (FedEx, DHL, UPS) with delivery times of 2-5 business days. The cartons are palletized and shrink-wrapped to prevent shifting during transit.
For large orders (50+ cartons), we use LTL (Less Than Truckload) or FTL (Full Truckload) shipping via freight carriers (e.g., XPO Logistics, DHL Freight). Delivery times range from 3-7 business days, depending on the destination. We coordinate with the carrier to ensure delivery to construction sites or warehouses, including liftgate service if needed (for unloading heavy pallets).
International Shipping (e.g., Asia, Africa, South America):
For orders outside the domestic market, we ship via sea freight (primary) or air freight (urgent orders). Sea freight is cost-effective for bulk orders (20ft/40ft containers) with delivery times of 2-6 weeks (depending on the port). Air freight is used for urgent orders (e.g., 1-2 cartons) with delivery times of 5-7 business days.
Customs Clearance Support: We provide all necessary documents for customs clearance, including commercial invoices, packing lists, CoC, and safety certification copies. For markets with specific regulatory requirements (e.g., India’s BIS certification, Australia’s AS/NZS standards), we ensure the product meets local standards before shipping to avoid delays.
Transportation Protection: All cartons are labeled with "Fragile" and "Handle with Care" stickers. For sea freight, the cartons are placed in waterproof containers to prevent moisture damage from sea spray. During transit, we track the shipment in real time and provide customers with a tracking number (via email or SMS) to monitor progress.
We understand that customers may want to test the wire’s performance before placing a bulk order, so we offer a flexible sample policy.
Sample Availability: Samples are available for all three specifications (2.0mm², 4.0mm², 6.0mm²). Each sample is a 1-meter length of wire, packed in a small PE bag with a label indicating the specification and batch number.
Request Process: Customers can request samples via our website, email, or sales representative. To process the request, we require basic information: company name, contact person, shipping address, and intended use (e.g., residential construction, industrial project). Samples are free of charge, but customers are responsible for shipping costs (we can arrange shipping via the customer’s preferred carrier or bill the cost to their account).
Sample Lead Time: Samples are shipped within 1-2 business days of the request. For international sample orders, delivery times depend on the shipping method (e.g., 3-5 days via DHL, 7-10 days via standard post).
Testing Support: We provide a sample test guide with the sample, outlining how to verify key properties (e.g., flexibility, insulation thickness). If customers require third-party testing (e.g., for project compliance), we can arrange testing with an accredited laboratory (additional fees may apply) and provide the test report within 5-7 business days.
Our after-sales service is designed to address customer concerns promptly and ensure satisfaction with the product.
Warranty Coverage: We offer a 10-year warranty on the wire, covering defects in materials and workmanship. The warranty applies to normal indoor use (as specified in the user manual) and does not cover damage caused by improper installation (e.g., exceeding the maximum bending radius), misuse (e.g., outdoor installation without protection), or natural disasters (e.g., fires, floods).
Claims Process: To file a warranty claim, customers must provide:
Proof of purchase (invoice or order number)
Photos/videos of the defect (e.g., insulation cracking, conductor breakage)
Details of the installation and use (e.g., installation date, application scenario)
Our after-sales team reviews the claim within 3 business days. If approved, we offer two solutions:
Replacement: We ship replacement wire of the same specification free of charge (including shipping costs).
Refund: We issue a full or partial refund (depending on the extent of the defect) within 5 business days of approval.
Technical Support: Our team of electrical engineers is available to provide technical support via phone, email, or video call.
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