Detailed Information on 16mm² Single Core Cable & 2-Core 6mm² Cable (Best Price) for Low-Voltage Power Distribution

1. Product-Specific Information

1.1 Specification Parameters

1.1.1 Electrical Specifications

1.1.2 Dimensional Specifications

1.1.3 Mechanical & Environmental Specifications

1.2 Material Selection

1.2.1 Conductor Material: High-Purity Electrolytic Copper

1.2.2 Insulation & Sheath Materials

1.3 Production Process

1.3.1 Conductor Manufacturing

1. Copper Rod Preparation: High-purity electrolytic copper rods (8mm diameter) are inspected for purity via spectrometry, with batches failing to meet 99.95% purity rejected.

2. Wire Drawing: Rods are pulled through diamond dies (4.51mm for 16mm², 2.76mm for 6mm²) at 12-15 m/s. Drawing is done at 200-250℃ to enhance ductility, with a water-based lubricant to reduce friction and prevent overheating.

3. Annealing: Drawn conductors are annealed in a nitrogen atmosphere at 450-500℃ to relieve internal stresses. This step restores ductility (elongation at break ≥20%) and ensures uniform conductivity.

4. Surface Cleaning: Conductors are ultrasonic cleaned to remove lubricant residues, then dried with hot air (80℃) to prevent insulation adhesion issues.

1.3.2 Insulation Extrusion

1. Material Preparation: PVC or XLPE pellets are mixed with additives (flame retardants, stabilizers) in a high-speed mixer (1000 rpm) for 5-10 minutes. For XLPE, cross-linking agents (e.g., dicumyl peroxide) are added at 1-2% concentration.

2. Extrusion: The mixture is fed into a single-screw extruder (L/D ratio 25:1) with temperature zones set to 160-180℃ (PVC) or 180-200℃ (XLPE). Molten insulation is extruded through a cross-head die onto the conductor, with a vacuum system to eliminate air gaps (which cause dielectric breakdown).

3. Cooling & Cross-Linking: PVC-Insulated Conductors are cooled in a water bath (20-30℃) for 10-15 seconds to solidify. XLPE-insulated conductors undergo additional cross-linking: peroxide-cross-linked XLPE is cured in a heated tube (200-220℃) for 2-3 minutes, while silane-cross-linked XLPE is exposed to humid air (85% RH, 60℃) for 24 hours.

4. Inspection: Insulation thickness is measured via laser micrometers at 10 points per meter, with deviations beyond ±0.1mm triggering automatic rejection. Dielectric strength testing (15kV for 1 minute) is performed on 1% of each batch.

1.3.3 2-Core Cable Stranding (for 2-Core 6mm² Model)

1. Core Alignment: Two insulated 6mm² conductors are fed into a stranding machine, aligned in parallel with a 1.0mm gap between them.

2. Sheath Extrusion (Optional): For sheathed models, a second extrusion step applies a PVC or XLPE sheath over both cores. The extruder temperature is set to 160-190℃, with sheath thickness controlled to 0.5mm ±0.05mm.

3. Curing & Cooling: Sheathed Cables are cooled in a water bath, then cured (if XLPE sheath) using the same process as insulation.

4. Dimensional Check: The cable’s width and thickness are measured to ensure compatibility with standard terminals and conduits.

1.3.4 Quality Testing & Spooling

1. Final Testing: All cables undergo continuity testing (to check for conductor breaks), insulation resistance testing (≥100 MΩ/km at 500V DC), and flame testing (per UL94 V-0). Tensile and bending tests are performed on 0.5% of each batch.

2. Spooling: Cables are wound onto wooden or plastic reels (100m, 200m, or 500m lengths) at 5-8 m/min. Spooling tension is controlled to avoid cable stretching, with a protective polyethylene film wrapped around the outer layer to prevent dust and moisture damage.

1.4 Featured Applications

1.4.1 16mm² Single Core Cable Applications

• Residential Main Distribution: Serves as the main incoming line from the utility meter to the distribution board, powering the entire household’s electrical system. Its 80-100A capacity supports multiple high-power appliances (e.g., 3kW water heaters, 2.5kW air conditioners) operating simultaneously.

• Commercial Power Supply: Used in small retail stores, restaurants, or offices to power centralized equipment such as walk-in freezers (2-3kW), commercial ovens (3-4kW), or server racks (2-3kW). The single-core design simplifies routing through ceiling or wall conduits.

• Industrial Auxiliary Circuits: Powers auxiliary equipment in factories, such as conveyor belts (1.5-2kW), small pumps (1-1.5kW), or lighting systems for production floors. The XLPE-insulated version is preferred here for its resistance to industrial dust and temperature fluctuations.

• Outdoor Power Distribution: With optional XLPE insulation and UV stabilizers, it is used for outdoor applications like powering swimming pool pumps (1.5-2kW) or garden irrigation systems, enduring exposure to sunlight and moisture.

1.4.2 2-Core 6mm² Cable Applications

• Residential Branch Circuits: Used for mixed lighting and socket circuits in bedrooms, living rooms, or kitchens. One core carries the live current (40-50A) for sockets, while the other powers lighting (≤10A), eliminating the need for separate cables.

• Small Appliance Dedicated Lines: Serves as a dedicated line for medium-power appliances like washing machines (1-1.5kW), dishwashers (1-1.2kW), or microwave ovens (1-1.5kW). The dual-core design simplifies wiring to appliance outlets, reducing installation time.

• Outdoor Landscape Lighting: Powers low-voltage landscape lighting systems (e.g., LED garden lights, path lights) with total load ≤500W. The parallel core design allows easy connection to multiple light fixtures via junction boxes.

• Temporary Power Supply: Used for temporary wiring in construction sites (powering tools like drills or grinders) or outdoor events (food stalls, temporary stages). Its compact size and dual-core structure make it easy to transport and install, with quick disassembly after use.

2. General Product Information

2.1 Packaging

2.1.1 Standard Retail Packaging (100m/200m Reels)

• Reel Material: Small reels (100m) use high-density polyethylene (HDPE) for lightweight, corrosion-resistant protection. HDPE reels have a diameter of 200mm, with flanges 50mm tall to prevent cable slippage. Large reels (200m) use plywood (treated with anti-mildew agents) for added strength, with a diameter of 300mm and steel axles for easy unwinding.

• Protective Layers: Cables are wrapped in a 0.05mm polyethylene film to shield against dust and moisture. For XLPE-Insulated Cables, an additional layer of kraft paper is added to prevent UV damage during storage.

• Labeling: Each reel has a weather-resistant label (100mm x 80mm) with product details: type (16mm² single core/2-core 6mm²), insulation material (PVC/XLPE), length, voltage rating, batch number, manufacturing date, and certification marks (GB, IEC, UL). Warning labels (“Store in Dry Place,” “Avoid Overbending”) are also affixed.

2.1.2 Bulk Packaging (500m/1000m Reels)

• Reel Material: Heavy-duty plywood reels (diameter 500mm for 500m, 600mm for 1000m) with steel reinforcement at flanges to support the cable’s weight (up to 50kg for 1000m 16mm² cable).

• Palletization: Reels are secured onto wooden pallets (1200mm x 800mm) using steel straps, with rubber chocks between reels to prevent rolling. Each pallet holds 4-6 reels (depending on size), with a total weight ≤300kg for easy handling via forklifts.

• Waterproofing: Pallets are wrapped in stretch film (0.1mm thickness) and covered with a waterproof tarp for outdoor storage or sea transportation. Desiccant packs (50g each) are placed inside the tarp to absorb moisture.

2.1.3 DIY-Sized Packaging (10m/20m Coils)

• Coil Design: Short lengths are coiled into compact loops (diameter 100mm) and secured with paper tape. Each coil is placed in a cardboard box (150mm x 150mm x 50mm) lined with bubble wrap to prevent kinking.

• User-Friendly Features: Boxes include a built-in “pull tab for easy unboxing and a printed installation guide with basic wiring tips (e.g., wire stripping depth, terminal connection steps) to assist DIY users. Each box is labeled with a simplified product sticker (50mm x 30mm) indicating cable type, length, and insulation material, along with a QR code linking to online video tutorials.

2.2 Transportation

2.2.1 Transportation Modes

• Road Transportation: The primary mode for domestic and regional shipments (within 500km), road transportation offers flexibility for direct delivery to construction sites, electrical supply stores, or residential addresses. For standard retail reels (100m/200m), light-duty trucks (5-10 tons) are used, with cargo secured using non-abrasive straps and cardboard dividers to prevent reel movement. For bulk pallets (500m/1000m reels), heavy-duty flatbed trucks (15-20 tons) are employed, with pallets fixed via steel chains and rubber mats to absorb vibrations. Enclosed trucks are used for shipments in rainy or dusty conditions to protect cables from moisture and debris, with temperature control (10℃-30℃) optional for XLPE-Insulated Cables in extreme climates. Road transit times range from 1-3 business days for regional deliveries and 3-7 business days for cross-country domestic shipments.
• Rail Transportation: Suitable for long-distance domestic bulk shipments (1000m+ reels) or cross-border deliveries to regions with well-developed rail networks. Railcars are loaded with pallets of cable reels, stacked 2-3 layers high (with heavier reels at the bottom) and secured with dunnage (wooden beams) to prevent shifting. Rail transportation is cost-effective for large volumes, with 30-50% lower per-unit costs than road transport, and is less affected by traffic congestion—transit times typically range from 5-12 business days, depending on the distance. It is commonly used by construction contractors or distributors purchasing cables for large residential or commercial projects.
• Sea Transportation: The main mode for international shipments, especially for bulk orders (containerized loads of 10+ pallets). Cable reels are packed into 20-foot or 40-foot shipping containers, with 20-foot containers holding 8-10 pallets (500m reels) and 40-foot containers holding 16-20 pallets. Containers are lined with moisture-absorbing desiccants (1kg per 10m²) to protect against saltwater humidity, and pallets are secured with steel straps to the container walls. Sea transit times vary by destination—2-4 weeks for regional routes (e.g., Asia to Southeast Asia) and 4-8 weeks for intercontinental routes (e.g., Asia to Europe/North America). While slower than air transport, sea shipping reduces costs by 60-70% for large orders, making it ideal for distributors or overseas construction firms.
• Air Transportation: Reserved for urgent orders (e.g., emergency construction repairs, small-batch DIY orders) or time-sensitive international shipments. Cables are packaged in lightweight cardboard boxes (for DIY coils) or compact HDPE reels (for 100m retail lengths) to meet airline weight and dimension restrictions (max weight per package: 30kg). Air cargo is loaded into temperature-controlled compartments to avoid extreme temperatures, with transit times of 2-5 business days globally. Air transport costs 3-5 times more than sea shipping but is critical for minimizing downtime in urgent projects—e.g., replacing damaged cables in a commercial building under construction.

2.2.2 Transportation Safety Measures

• Pre-Shipment Inspection: All shipments undergo a pre-transit check to verify packaging integrity (e.g., no torn film, secure straps) and label legibility. For bulk pallets, a load stability test is conducted—simulating 30 minutes of road vibration—to ensure reels do not shift. Any defective packaging is repaired or replaced before shipment.
• Loading/Unloading Protocols: Specialized equipment is used to handle cable reels: forklifts with reel clamps (for pallets) or cranes with soft lifting slings (for large plywood reels) to avoid damaging reel flanges or cable insulation. Workers are trained in proper lifting techniques, with weight limits clearly marked on each package to prevent overloading.
• Environmental Protection: For sea and air shipments, cables are protected from temperature extremes: insulated containers are used for shipments to regions with temperatures below -30℃ or above 40℃, and UV-protective covers are added for outdoor storage at transit hubs. For road shipments in rainy seasons, waterproof tarps are secured over open flatbeds, with periodic checks during transit to ensure tarps remain intact.
• Real-Time Tracking: All shipments are assigned a unique tracking number, allowing customers to monitor progress via the manufacturer’s logistics portal or third-party carrier apps (e.g., DHL, UPS). For bulk orders, GPS trackers are attached to containers or pallets, providing updates on location, temperature, and shock events (e.g., excessive vibration) to alert teams to potential damage.

2.3 Shipment

2.3.1 Order Processing & Inventory Check

2.3.2 Documentation Preparation

• Domestic Shipments: A packing list (itemizing each package’s contents, batch number, and quantity) and invoice (if applicable) are included. For construction customers, a certificate of compliance (CoC) is provided, verifying adherence to local standards (e.g., GB/T 5023 in China, NEC in the U.S.).

• International Shipments: Additional documents include a commercial invoice (detailing product value for customs valuation), certificate of origin (proving manufacturing location to qualify for trade tariffs), and customs declaration form (listing HS codes for cable products: 7311.00 for insulated Copper Cables). For EU-bound shipments, a CE certificate and RoHS compliance report are also included to meet REACH regulations.

2.3.3 Shipment Scheduling & Coordination

• Urgent Orders: Expedited road or air transport is booked, with carriers notified of the priority status to ensure timely pickup (within 24 hours of order processing).

• Bulk Orders: Rail or sea transport is scheduled, with container booking confirmed 5-7 business days in advance to secure space during peak shipping seasons (e.g., pre-construction booms).

2.3.4 Delivery & Handover

2.4 Samples

2.4.1 Sample Request & Preparation

2.4.2 Quality Testing for Samples

• Electrical Testing: Continuity checks (to confirm no conductor breaks) and insulation resistance testing (≥100 MΩ at 500V DC) are performed.

• Mechanical Testing: Bending tests (10 cycles around a mandrel matching the minimum bending radius) to verify insulation flexibility, and tensile tests to ensure conductor strength.

• Visual Inspection: Samples are checked for uniform insulation thickness, smooth surface (no scratches or bubbles), and correct color coding (e.g., red for live, blue for neutral in 2-core cables).

2.4.3 Sample Shipping & Follow-Up

• Performance Feedback: Whether the sample meets electrical or mechanical requirements (e.g., compatibility with existing terminals, flexibility for installation).

• Quality Feedback: Observations on insulation durability, conductor appearance, or other physical properties.

• Order Intent: If the customer is satisfied, the sales team provides a bulk order quote and lead time; if not, adjustments (e.g., switching to XLPE insulation) are discussed to meet their needs.

2.5 After-Sales Service

2.5.1 Technical Support

• Hotline & Email: A toll-free hotline and dedicated email address connect customers to certified electrical engineers, who provide real-time guidance on installation (e.g., proper conduit size for 16mm² cables), troubleshooting (e.g., identifying insulation damage), and load calculation (e.g., matching cable capacity to appliance power).

• Online Resources: The manufacturer’s website hosts a knowledge base with FAQs, installation manuals, and video tutorials (e.g., “How to Strip XLPE Insulation” “Calculating Circuit Load for 2-Core Cables”), and a community forum where users share tips and solutions.

• On-Site Support: For large-scale projects (e.g., residential complexes), on-site technical representatives can be dispatched within 48 hours of request to inspect installations, resolve complex issues (e.g., cable overheating), or train electricians on best practices.

2.5.2 Warranty Coverage

• Proof of purchase (invoice or order number).

• Photos/videos of the defect (e.g., insulation cracking, conductor oxidation).

• Installation details (e.g., date, environment, load applied).

2.5.3 Defect Handling & Replacement

1. Defect Reporting: Customers report defects via the after-sales hotline or online portal, providing details and supporting evidence.

2. Root Cause Analysis: The quality control team investigates the defect—for manufacturing issues (e.g., uneven insulation), batch records are reviewed to identify production anomalies; for installation issues (e.g., conductor breakage), technical representatives may visit the site to assess installation practices.

3. Resolution Implementation: For minor defects (e.g., small insulation scratches), the team provides repair guidance (e.g., using UL-approved insulation tape). For major defects (e.g., insulation breakdown), replacement cables are shipped via expedited transport, with the manufacturer covering shipping costs. For installed defective cables, the team coordinates with local contractors to remove and replace the cables at no cost to the customer.

4. Preventive Action: Defect data is logged in a quality management system, with quarterly reviews to identify trends (e.g., recurring insulation issues in a specific batch) and implement corrective measures (e.g., adjusting extrusion temperatures).

2.5.4 Maintenance Guidance

• Regular Inspection Schedule: Customers are advised to inspect cables annually (or every 6 months in harsh environments) for signs of damage: insulation discoloration (indicating overheating), fraying (from friction), or corrosion (in humid areas). For hidden cables (e.g., in walls), inspections are recommended during home renovations or electrical upgrades.

• Load Management: A load capacity chart is shared, outlining maximum allowable loads for each cable type (e.g., 16mm² PVC cable: max 90A for continuous use) to prevent overloading. Customers are advised to avoid daisy-chaining high-power appliances on a single circuit (e.g., connecting a water heater and air conditioner to a 2-core 6mm² cable).

• Environmental Protection: Guidelines include keeping cables away from direct heat sources (e.g., radiators), using waterproof junction boxes for Outdoor Cables, and cleaning dust from cable trays to improve heat dissipation. For XLPE-insulated cables in industrial settings, periodic cleaning with a dry cloth is recommended to remove oil or chemical residues.