Voltage Rating: 0.45/0.75kV. This rating is standard for low-voltage (LV) residential systems, with 0.45kV representing the phase-to-earth voltage and 0.75kV the phase-to-phase voltage. It is compatible with the 110V (North America) and 230V (Europe, Asia) mains voltages used in most households, ensuring seamless integration with existing electrical grids.
Core Configuration: Single-core. Unlike Multi-Core cables (used in industrial settings), the single-core design simplifies installation in tight residential spaces (e.g., wall cavities, ceiling voids) and allows for easy termination to outlets, switches, and circuit breakers. Each cable carries a single current-carrying conductor, eliminating the risk of crosstalk between cores and simplifying circuit tracing during maintenance.
Cross-Sectional Area (CSA) and Ampacity: The four CSA options (2.5mm, 4mm, 6mm, 10mm) are engineered to match the current demands of specific residential circuits, preventing overheating and ensuring efficient power delivery:
2.5mm: Ampacity of 16-25A (varies by insulation type and installation method). At 25°C ambient temperature and installed in conduit, it reaches 25A—sufficient for lighting circuits (which typically draw 1-5A per fixture) and general-purpose outlets (powering devices like laptops, smartphones, and small appliances with 5-15A demands).
4mm: Ampacity of 25-32A. Ideal for medium-power appliances: refrigerators (5-8A), washing machines (8-12A), and 1.5-2 ton air conditioners (10-18A). Its current capacity ensures these appliances operate without voltage drops, which can cause inefficiency or damage.
6mm: Ampacity of 32-45A. Designed for heavy-duty systems: 50-80L electric water heaters (15-25A), 3+ ton air conditioners (20-30A), and electric stoves (25-35A). It is also used as a sub-main cable, distributing power from the main electrical panel to high-demand zones (e.g., kitchens, bathrooms).
10mm: Ampacity of 45-63A. Reserved for high-current applications: Level 2 EV chargers (7-22kW, 30-50A), large electric boilers (30-40A), and main service Entrance Cables (connecting the home’s panel to the utility grid). Its robust design handles continuous high currents without overheating.
Resistance and Conductivity: The Copper Conductor has a DC resistance of ≤10.1Ω/km (2.5mm), ≤6.31Ω/km (4mm), ≤4.21Ω/km (6mm), and ≤2.53Ω/km (10mm) at 20°C—well below the maximum limits set by IEC 60227. This low resistance minimizes energy loss (typically <1% per 100 meters), reducing electricity bills for homeowners.
Overall Diameter: Varies by CSA and insulation type:
2.5mm (PVC-insulated): 4.0-4.5mm
4mm (PVC-insulated): 4.8-5.3mm
6mm (PVC-insulated): 5.5-6.0mm
10mm (PVC-insulated): 6.8-7.3mm
Weight: Ranges from 0.028kg/m (2.5mm PVC) to 0.115kg/m (10mm XLPE). This lightweight design reduces strain on wall mounts and conduit, making installation easier for electricians—especially when pulling cables through long or vertical runs.
Flexibility: Measured by minimum bending radius (10x cable diameter for static installation, 15x for dynamic bending). For example, a 2.5mm cable can bend around a 40mm radius (static) or 60mm radius (dynamic), allowing it to navigate around studs, pipes, and other obstacles in walls. The Stranded Conductor enhances flexibility, as individual wires move independently during bending—unlike solid conductors, which crack under repeated flexing.
Tensile Strength: ≥15N for 2.5mm, ≥25N for 4mm, ≥35N for 6mm, and ≥50N for 10mm. This strength ensures the cable can withstand pulling forces during installation (e.g., being pulled through 10-meter conduit runs) without breaking.
2.5mm: 19 strands (0.41mm each)
4mm: 19 strands (0.52mm each)
6mm: 37 strands (0.45mm each)
10mm: 61 strands (0.46mm each)
Flexibility: Strands move independently, allowing the cable to bend without conductor damage—essential for wiring in tight spaces (e.g., behind light switches or under floorboards).
Conductivity: Pure copper has a conductivity of 58 MS/m (20°C), 61% higher than aluminum. This ensures efficient power delivery, even for high-current appliances like electric stoves.
Corrosion Resistance: Copper forms a thin oxide layer (CuO) that prevents further corrosion, unlike aluminum (which forms a thick, insulating oxide layer that can cause connection failures). This is critical for residential wiring, where moisture (e.g., in bathrooms) can accelerate corrosion.
Termination Ease: Stranded copper is easier to crimp or solder to terminals (e.g., outlet screws, circuit breaker lugs) than solid copper, reducing installation time and the risk of loose connections (a common cause of electrical fires).
Polyvinyl Chloride (PVC):
Advantages: Cost-effective, easy to extrude, and resistant to moisture, oil, and common household chemicals (e.g., cleaning agents). It has a smooth surface that reduces friction during installation, making it easy to pull through conduit.
Temperature Range: -15°C to +70°C (continuous), +105°C (short-term overload). Suitable for most residential areas, except near heat sources (e.g., oven vents, water heater tanks).
Flame Retardancy: Formulated with flame retardants (e.g., antimony trioxide, aluminum hydroxide) to meet IEC 60332-1 (single cable flame test) and IEC 60332-3 (vertical flame spread test). In a fire, PVC Insulation self-extinguishes within 60 seconds and limits flame spread to <1.5 meters, reducing fire risks.
Cross-Linked Polyethylene (XLPE):
Advantages: Superior thermal resistance, aging resistance, and UV stability compared to PVC. It does not soften at high temperatures or become brittle in cold weather, making it ideal for harsh residential environments (e.g., attics in hot climates, basements in cold climates).
Temperature Range: -40°C to +90°C (continuous), +130°C (short-term overload). Suitable for wiring near heat sources (e.g., kitchen ranges, HVAC ducts) and outdoor applications (e.g., EV charging stations in garages).
Flame Retardancy: Meets the same IEC 60332 standards as PVC, with the added benefit of low smoke and halogen (LSZH) variants. LSZH XLPE emits minimal smoke and no toxic halogens (chlorine, bromine) in a fire, protecting occupants from respiratory harm and reducing damage to smart home devices.
Europe/Asia: Brown (live), Blue (neutral), Green/Yellow (earth)
North America: Black/Red (live), White/Gray (neutral), Green/Bare (earth)
Australia: Brown (live), Blue (neutral), Green/Yellow (earth)
2.5mm BVR Cable: The standard for lighting circuits, whether for recessed ceiling lights, pendant lights, or wall sconces. Its small diameter allows it to be routed through narrow channels in drywall, and its 16-25A ampacity supports multiple fixtures (e.g., 10 recessed lights drawing 2A each). In smart homes, it powers smart bulbs and dimmers, as its low resistance ensures consistent voltage (critical for dimming functionality).
2.5mm BVR Cable: Used for outlets in living rooms, bedrooms, and home offices. These outlets power low-to-medium current devices: laptops (1-2A), smartphones (0.5-1A), televisions (1-3A), and small appliances (e.g., blenders, toasters, 5-10A). The cable’s flexibility allows it to be routed from the main panel to outlets in multiple rooms, even around obstacles like door frames or window sills.
4mm BVR Cable: Powers medium-power kitchen appliances: refrigerators (5-8A), dishwashers (8-12A), and microwave ovens (10-15A). Its 25-32A ampacity ensures these appliances operate without voltage drops, which can cause refrigerators to run inefficiently or microwaves to lose heating power.
6mm BVR Cable: Used for heavy-duty kitchen appliances: electric stoves (25-35A), induction cooktops (20-30A), and large refrigerators (10-15A with ice makers). It is also used for kitchen sub-main circuits, distributing power to multiple appliance outlets from the main panel.
4mm BVR Cable: Powers 1.5-2 ton air conditioners (10-18A) and small electric water heaters (50L, 15-20A). Its flexibility allows it to be routed through attic or basement spaces to connect to outdoor AC units or indoor water heaters.
6mm BVR Cable: Used for 3+ ton air conditioners (20-30A) and 80L electric water heaters (25-30A). In homes with central heating, it powers electric furnaces (25-35A) or heat pumps (20-25A).
10mm BVR Cable: Reserved for large electric boilers (30-40A) or heat pumps with backup electric heating (35-45A). Its high ampacity ensures these systems can handle peak loads during cold weather.
10mm BVR Cable: The standard for Level 2 EV chargers (7-22kW, 30-50A). It is routed from the main panel to the charger (typically in a garage) and must be rated for continuous high currents. XLPE insulation is preferred for EV charging, as it withstands the heat generated during long charging sessions (4-8 hours).
2.5mm/4mm BVR Cable: Powers smart home systems: smart thermostats (0.5-1A), security cameras (0.5-1A), and home automation hubs (1-2A). These cables are often run alongside Ethernet cables in walls, leveraging their flexibility to share conduit space.
Wire Drawing: High-purity copper rods (99.95% pure) are drawn through a series of diamond dies to reduce their diameter to the required strand size (e.g., 0.41mm for 2.5mm cables). The drawing process is done at room temperature (cold drawing) to maintain copper’s conductivity and strength. A lubricant (e.g., mineral oil) is used to reduce friction and prevent strand damage.
Stranding: The drawn Copper Strands are twisted together using a stranding machine. The stranding pattern is “regular lay” (strands twist in the opposite direction of the cable’s final twist), which ensures the conductor remains compact and flexible. For example, 19 strands for 2.5mm cables are twisted in 3 layers: 1 central strand, 6 strands in the first layer, and 12 strands in the second layer. The stranding pitch (distance between twists) is 10-15x the conductor diameter, optimizing flexibility and current distribution.
Annealing: The stranded conductor is heated to 300-400°C in a nitrogen atmosphere (to prevent oxidation) and cooled slowly. Annealing softens the copper, reducing residual stress from drawing and stranding, and improves flexibility—critical for residential wiring, where the cable is often bent during installation.
Material Preparation:
PVC Insulation: PVC resin is mixed with plasticizers (to enhance flexibility), stabilizers (to prevent degradation from heat/UV), and flame retardants in a high-speed mixer. The mixture is melted in an extruder at 160-180°C to form a homogeneous melt.
XLPE Insulation: XLPE resin is mixed with cross-linking agents (peroxides for chemical cross-linking, silanes for moisture-cured cross-linking) and additives (UV stabilizers, antioxidants). The melt temperature is 180-200°C for peroxide cross-linking, 160-180°C for silane cross-linking.
Extrusion: The molten insulation is extruded onto the stranded conductor using a crosshead extruder. The extruder die is sized to ensure uniform insulation thickness (e.g., 0.8mm for 2.5mm PVC Cables, 1.0mm for 2.5mm XLPE Cables). A vacuum tank is used to remove air bubbles from the insulation, preventing electrical breakdown.
Cross-Linking (for XLPE):
Peroxide Cross-Linking: The Insulated Conductor is passed through a continuous vulcanization (CV) tube heated to 200-220°C. The heat activates the peroxides, forming cross-links between polymer chains. This takes 10-15 minutes and results in a rigid, heat-resistant insulation.
Silane Cross-Linking: The insulated conductor is cooled in a water bath and then stored in a humid chamber (90% RH, 60°C) for 24-48 hours. Moisture reacts with silane to form cross-links, a slower process but more energy-efficient than peroxide cross-linking.
Cooling and Sizing:
Winding onto Spools: The cooled, insulated cable is wound onto plastic or cardboard spools using a winding machine. Spool sizes are tailored to CSA and customer needs:
2.5mm/4mm cables: 100m or 200m spools (weight: 2.8-23kg), ideal for small renovation projects or electricians’ daily use.
6mm/10mm cables: 50m or 100m spools (weight: 17.5-115kg), suitable for larger projects like new home construction or EV charger installations.
Custom Cutting: For customers requiring specific lengths (e.g., 15m for a kitchen appliance circuit), the cable is cut using a precision guillotine. Each cut length is inspected to ensure clean, square ends (no frayed strands) and packaged in individual PE bags with length labels.
Electrical Testing:
Insulation Resistance Test: A 1kV DC megohmmeter is used to measure insulation resistance between the conductor and ground. Minimum resistance: ≥100 MΩ (PVC) or ≥500 MΩ (XLPE) at 20°C. Low resistance indicates moisture ingress or insulation defects.
Dielectric Strength Test: The cable is submerged in water and subjected to 2kV AC for 1 minute (PVC) or 3kV AC for 1 minute (XLPE). No breakdown or arcing confirms the insulation can withstand voltage surges (e.g., from lightning).
Conductor Resistance Test: A micro-ohmmeter measures the conductor’s DC resistance. Results must be ≤10.1Ω/km (2.5mm) to ≤2.53Ω/km (10mm) to ensure efficient current flow.
Mechanical Testing:
Flexibility Test: The cable is bent around a mandrel (10x diameter) 100 times. After bending, the insulation is inspected for cracks, and conductor continuity is tested to confirm no strand breakage.
Tensile Test: A 1-meter cable sample is pulled until the conductor breaks. Breaking force must be ≥15N (2.5mm) to ≥50N (10mm) to ensure it can withstand installation pulling forces.
Abrasion Resistance Test: A weighted abrasive wheel (5N) is rolled over the insulation 100 times. Insulation thickness loss must be ≤20% to confirm durability against contact with conduit or wall studs.
Flame and Smoke Testing:
IEC 60332-1 Test: A 600mm cable sample is exposed to a 1kW flame for 60 seconds. The flame must self-extinguish within 60 seconds, and no burning drips are allowed.
LSZH Smoke Density Test (for XLPE): Per IEC 61034, the cable is burned in a closed chamber. Maximum smoke density (optical density) must be ≤0.15 to ensure visibility during a fire, protecting occupants and firefighters.
Certification: After passing all tests, the cable is certified to global standards:
IEC 60227 (International): For PVC/XLPE-insulated low-Voltage Cables.
ANSI/UL 44 (North America): Requires additional tests for flame retardancy and temperature resistance.
BS 6004 (UK): Mandates compliance with UK wiring regulations (e.g., color coding, ampacity).
Plastic Spools: For 2.5mm/4mm 100m/200m spools, lightweight high-density polyethylene (HDPE) spools are used. HDPE is impact-resistant (prevents cracking during handling) and water-resistant (protects the cable from rain on job sites). Each spool is wrapped in a thin PE film to keep out dust, with a paper label on the spool flange detailing:
Product info: CSA (e.g., 2.5mm), insulation type (PVC/XLPE), color (e.g., brown), length (100m).
Safety info: Voltage rating (0.45/0.75kV), flame retardancy (IEC 60332), and “keep away from heat” warnings.
Cardboard Spools: For 6mm/10mm 50m/100m spools, heavy-duty corrugated cardboard spools (3-ply) are used. These spools are recyclable and cost-effective for larger cables. A waterproof PVC shrink wrap is applied over the spool to protect against moisture, with a plastic label (resistant to water and oil) attached to the flange.
Small Lengths (1-10m): Cut lengths are sealed in 100-micron PE bags with zip closures. The bag is printed with product details (CSA, insulation type, length) and a QR code linking to installation guidelines. For electricians, 5-10 bags are packed into a cardboard box labeled “Job Site Pack” for easy transport.
Medium Lengths (10-50m): These are wound onto small cardboard cores (100mm diameter) and wrapped in kraft paper. The paper is secured with tape, and a label is attached with length and product info. This packaging is lightweight and easy to carry up ladders or into tight spaces (e.g., attics).
Pallet Preparation: Spools are stacked in layers (2-3 layers, depending on weight) with cardboard dividers between layers to prevent friction damage. The pallet is wrapped with stretch film (200-micron) to stabilize the load and protect against dust.
Weather Protection: For outdoor shipping (e.g., to construction sites), a waterproof tarp is draped over the pallet and secured with ropes. Pallets are labeled with “Weather Protected” and “Handle with Forklift” symbols to guide logistics teams.
Truck Delivery:
Small orders (1-10 spools): Delivered via small vans (5-10 ton capacity). Spools are placed in the van’s cargo area with foam blocks to prevent rolling. Delivery times: 1-3 business days for urban areas, 3-5 days for rural areas.
Large orders (10+ pallets): Shipped via flatbed trucks (20-30 ton capacity). Pallets are secured with steel straps to the truck bed, and a tarp is used to protect against rain. For long-distance trips (e.g., cross-country), temperature-controlled trucks are used in extreme weather (≤-10°C or ≥35°C) to prevent insulation damage (e.g., PVC becoming brittle in cold).
Courier Services: For urgent orders (e.g., electricians needing a 2.5mm cable for a same-day repair), courier services (e.g., DHL, FedEx) are used. Small spools or cut lengths are packed in padded envelopes to avoid damage during transit, with delivery times of 1-2 business days.
Sea Freight:
The majority of international orders are shipped via sea freight, as it is cost-effective for bulk shipments. Pallets are loaded into 20ft or 40ft shipping containers (FCL for large orders, LCL for small orders). Inside the container, pallets are secured with dunnage (wooden beams) to prevent movement during rough seas. Humidity packs (500g) are placed in the container to absorb moisture (critical for tropical destinations). Transit times: 2-4 weeks (regional, e.g., Europe to Africa), 4-8 weeks (intercontinental, e.g., China to North America).
Air Freight:
For urgent international orders (e.g., a builder in Australia needing 10mm cables for a deadline), air freight is used. Spools are packed into lightweight cardboard boxes (to reduce weight and cost) and shipped via cargo planes. Transit times: 2-5 business days, but costs are 5-8x higher than sea freight.
Customs Compliance:
All international shipments include documentation to avoid delays:
Commercial Invoice: Details product description, quantity, unit price, total value, and country of origin (e.g., “Made in China”).
Packing List: Specifies package dimensions, weight, and contents (e.g., “20 pallets of 2.5mm PVC BVR cable, 100m spools”).
Certificate of Conformity (CoC): Issued by a third-party lab, confirming the cable meets the importing country’s standards (e.g., UL certification for the U.S., CE marking for the EU).
Import Permits (if required): For countries with strict electrical regulations (e.g., Brazil, Saudi Arabia), the company assists customers in obtaining import permits by providing test reports and certification documents.
Order Placement: Customers can place orders via multiple channels:
Online Portal: The company’s website allows customers to select CSA, insulation type, length, and quantity, with real-time inventory updates (e.g., “2.5mm brown PVC: 500 spools in stock”). Orders are processed instantly, and a confirmation email is sent within 5 minutes.
Phone/Email: For large or custom orders (e.g., 10,000m of 6mm XLPE cable), customers can contact the sales team via phone or email. The team provides a detailed quote (including shipping costs) within 24 hours and assists with order customization (e.g., special color coding for a specific project).
Production Lead Time:
In-Stock Items (2.5mm/4mm PVC): Shipped within 1-2 business days.
Made-to-Order Items (6mm/10mm XLPE, custom lengths): Production lead time of 5-7 business days, with weekly updates sent to customers (e.g., “Production 50% complete—scheduled for shipping on [date]”).
Shipping Notification: When the order ships, customers receive an email with:
Tracking Number: For domestic orders, a link to the courier’s tracking page (e.g., UPS, DPD) to monitor delivery status. For international orders, a container number and link to the shipping line’s tracking system (e.g., Maersk, CMA CGM).
Delivery Estimate: A date range for delivery (e.g., “Expected delivery: 15-17 October”) and contact information for the delivery team (in case of scheduling changes).
Delivery Inspection: Upon delivery, customers are advised to:
Check packaging for damage (e.g., broken spools, torn shrink wrap). If damage is found, take photos and notify the company within 48 hours to initiate a replacement or refund.
Verify product details (CSA, insulation type, color, length) against the order invoice. Any discrepancies are resolved within 3 business days.
Sample Availability: Samples are available in 1-meter lengths for all CSA and insulation types. Customers can request up to 5 samples per order, with options for different colors (e.g., brown, blue, green-yellow) to test color coding compliance.
Sample Request Process:
Online: Customers can request samples via the website’s “Sample Request” page, providing their shipping address and project details (e.g., “Residential renovation in London—need to test 2.5mm PVC for lighting circuits”).
Sales Team: For large projects (e.g., a housing developer building 500 homes), the sales team provides samples along with a technical datasheet and installation guide.
Sample Cost and Shipping:
Free Samples: For customers planning to place a bulk order (≥100 spools), samples are free, with shipping costs covered by the company.
Low-Cost Samples: For small customers or first-time inquiries, samples cost $5-10 per piece (refundable if a bulk order is placed within 30 days). Shipping is via standard courier, with delivery times of 2-5 business days.
Sample Testing Support: Along with samples, customers receive a “Sample Testing Guide” that outlines key tests to perform (e.g., flexibility, insulation resistance) and acceptable results. The technical team is available via phone or email to answer questions (e.g., “How do I measure insulation resistance correctly?”) and interpret test results.
Technical Support:
24/7 Hotline: A toll-free hotline is available for urgent technical issues (e.g., “The cable is overheating—what should I do?”). Certified electrical engineers respond within 1 hour, providing step-by-step guidance (e.g., “Check ampacity against the appliance’s current draw—you may need a larger CSA”).
Online Resources: The company’s website features a “Support Center” with:
Installation Videos: Step-by-step guides for wiring lighting circuits, appliance outlets, and EV chargers (e.g., “How to Terminate BVR Cable to a Circuit Breaker”).
FAQs: Answers to common questions (e.g., “Can 2.5mm BVR cable be used for outdoor lighting?”—yes, if XLPE-insulated).
Datasheets: Detailed technical specifications (ampacity charts, temperature ranges) for all cable variants.
Installation Training:
On-Site Training: For large customers (e.g., electrical contracting firms, housing developers), the company provides on-site training sessions. Led by experienced trainers, sessions cover:
Safe handling of spools (avoiding over-tensioning during unwinding).
Proper termination techniques (crimping, soldering) to prevent loose connections.
Compliance with local wiring codes (e.g., NEC in the U.S., IET Wiring Regulations in the UK).
Virtual Training: For customers in remote areas, live virtual training is offered via Zoom, with demonstrations using 3D models of cable installation.
Warranty Coverage:
Standard Warranty: The BVR cable comes with a 10-year warranty (PVC) or 15-year warranty (XLPE) against manufacturing defects (e.g., insulation failure, conductor corrosion). The warranty covers:
Replacement of defective cables (free of charge).
Labor costs for reinstallation (if the defect is reported within 5 years of purchase).
Warranty Claim Process: To file a claim, customers provide:
A copy of the order invoice.
Photos/videos of the defect (e.g., cracked insulation, corroded conductor).
A test report from a certified lab confirming the defect is manufacturing-related.
Claims are processed within 5 business days, with replacements shipped via expedited courier to minimize project delays.
Maintenance and Recycling:
Maintenance Guidelines: Customers receive a “Cable Maintenance Guide” with recommendations:
Annual Visual Inspections: Check for insulation damage (e.g., cuts, cracks) in high-traffic areas (e.g., near doorways, under carpets).
Temperature Checks: Use an infrared thermometer to monitor cable temperature during peak usage (e.g., when an electric stove and oven are both in use). Temperatures exceeding 70°C (PVC) or 90°C (XLPE) indicate overloading, requiring a CSA upgrade.
Moisture Protection: In damp areas (bathrooms, basements), ensure cable conduits are sealed with waterproof tape to prevent moisture ingress. If insulation becomes wet, dry it thoroughly before energizing to avoid short circuits.
Recycling Program: The company operates a take-back program for end-of-life BVR cables (typically after 10-15 years of use) to promote environmental sustainability:
Collection: Customers can drop off old cables at designated collection centers (located in major cities) or request a free pickup for large quantities (≥500kg).
Processing: Collected cables are sent to certified recycling facilities, where insulation (PVC/XLPE) is separated from Copper Conductors via mechanical shredding and electrostatic separation.
Reuse: Copper conductors are melted and recast into new copper rods (95% recycling efficiency), while insulation is processed into plastic pellets for non-electrical applications (e.g., plastic containers, garden furniture).
Incentives: Customers who return old cables receive a 5% discount on their next BVR cable order, encouraging participation in sustainable practices.
Hongtai Cable Technology Co., Ltd
Электронная почта: export@qlcables.com
sales@qlcables.com
Тел/WhatsApp:+86-18032066271
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