Wholesale 3 Cores Cable 1.5 mm Square Electric Wire Fio De Cobre

Conductor Configuration: 3 insulated Copper Conductors, each with a cross-sectional area of 1.5mm². The total cable diameter ranges from 6mm to 8mm, depending on insulation thickness.

Current-Carrying Capacity: Rated for 10A to 16A under normal operating conditions (30°C ambient temperature). Derating applies in higher temperatures: 10% reduction for every 5°C above 30°C to prevent overheating.

Voltage Rating: 450/750V, suitable for low-voltage systems in homes, offices, and light industrial settings.

Temperature Range:

Flexibility Metrics:

Insulation Resistance: ≥100MΩ at 500V DC, ensuring reliable electrical isolation between conductors.

Purity: 99.9% copper ensures conductivity of ≥97% IACS, minimizing energy loss during power transmission. This is critical for maintaining stable voltage in lighting circuits and small appliances.

Stranding: Fine-stranded construction (19–37 strands) enhances flexibility, allowing the wire to bend easily around corners, fit into tight conduits, and withstand repeated handling during installation. Stranded Conductors also reduce fatigue from vibration, extending service life in dynamic environments (e.g., near fans or machinery).

Tin Plating (Optional): Some variants feature tin-plated strands (5–10μm thick) to resist oxidation, ideal for humid environments like bathrooms, kitchens, or coastal regions.

Polyvinyl Chloride (PVC):

Cross-Linked Polyethylene (XLPE):

Protection: Shields conductors from physical damage (abrasion, impact) and environmental factors (dust, moisture).

Color Coding: Sheaths are often color-coded for easy identification:

Flame Retardancy: Both PVC and XLPE sheaths meet UL 94 V-0 standards, self-extinguishing within 10 seconds to limit fire spread.

Lighting Circuits: Powers ceiling lights, wall sconces, and recessed fixtures. The 3-core design separates live, neutral, and switched live conductors, enabling independent control of multiple lights (e.g., in living rooms or bedrooms).

Small Appliances: Connects devices like fans, televisions, and table lamps, where 10A–16A capacity suffices.

Renovations: Flexible enough for retrofitting older homes, fitting into existing conduits or wall cavities without major modifications.

Office Buildings: Wires modular workstations, task lighting, and phone chargers. Bulk quantities reduce installation costs for large floors or entire buildings.

Retail Stores: Powers display lighting, cash registers, and security systems. The flame-retardant sheath enhances safety in crowded areas.

Hotels and Hospitality: Installed in guest rooms for lighting, air conditioning controls, and USB outlets, with PVC variants meeting budget constraints.

Workshops: Connects low-power machinery (e.g., drills, sanders) and task lighting. XLPE-insulated variants withstand occasional exposure to oils or coolants.

Control Systems: Links sensors, relays, and small motors in manufacturing lines, where reliable signal transmission is critical.

Agricultural Facilities: Wires barn lighting and ventilation fans, with tin-plated conductors resisting moisture in humid environments.

Affordable Housing Complexes: Used in mass housing developments, where bulk pricing aligns with project budgets.

Schools and Hospitals: Complies with safety standards for public spaces, ensuring fire resistance and low smoke emission.

Copper Drawing: Raw copper rods (99.99% pure) are drawn through diamond dies to form fine wires (0.3mm–0.5mm diameter). This process increases tensile strength while maintaining conductivity.

Annealing: Wires are heated to 400°C–600°C in a controlled atmosphere to soften the metal, enhancing flexibility for stranding.

Stranding: Wires are twisted into 1.5mm² conductors using a high-speed stranding machine. The lay length (distance between twists) is set to 15×–20× the wire diameter to balance flexibility and structural stability.

Tin Plating (Optional): Stranded Conductors are electroplated in a tin sulfate bath, ensuring uniform coverage to prevent oxidation.

PVC Insulation:

XLPE Insulation:

Core Assembly: Three insulated conductors are twisted together with filler material (polypropylene rope) to form a round bundle, ensuring even sheath thickness.

Sheath Extrusion: The bundle is fed through a second extruder to apply the outer sheath (PVC or XLPE), which is cooled in a water bath and cured to bond with the insulation.

Printing: Product details (size, voltage, standards) are printed on the sheath using laser or inkjet technology for traceability.

Electrical Tests: Dielectric strength (3kV for 1 minute) and insulation resistance measurements to ensure no leakage.

Mechanical Tests: Tensile strength (≥12MPa for PVC), elongation at break (≥150%), and flex testing (10,000 cycles) to verify durability.

Flame Tests: Vertical flame propagation tests per UL 94 to confirm self-extinguishing properties.

Reels: Standard quantities include 100m, 500m, and 1000m reels. Reels are made of cardboard (for 100m) or plywood/steel (for 500m–1000m) with flanges to prevent unwinding.

Labeling: Each reel is labeled with product specifications (size, insulation type, voltage), batch number, manufacturing date, and compliance marks (CE, IEC, local certifications).

Protection: Reels are wrapped in moisture-resistant plastic film, and steel reels are secured with straps to withstand shipping vibrations.

Shipping Modes: Available via road (trucks with reel lifts), sea (container shipping for international orders), or rail (for bulk domestic transport).

Handling Guidelines:

Minimum Order Quantity (MOQ): 10 reels (1000m) for standard variants; 50 reels for custom options.

Customization Options:

Lead Times: Standard orders ship within 3–5 business days. Custom orders require 7–10 days for production.

Sample Availability: Free 1m–5m samples are available for standard variants, shipped within 2 business days. Custom samples incur a fee and take 3–4 days.

Sample Documentation: Includes a certificate of compliance (CoC) with test results and material specifications.

Pricing: Varies by insulation type (PVC: \(0.10–\)0.15/m; XLPE: \(0.15–\)0.20/m) and order volume. Bulk discounts apply for orders over 10,000m.

Payment Terms: T/T (30% deposit, 70% upon delivery), L/C (letter of credit) for international orders, or net-30 for established clients.

Warranty: 5-year warranty against manufacturing defects (e.g., insulation cracking, conductor breakage under normal use). Excludes damage from improper installation or chemical exposure.

Technical Assistance: A team of engineers provides installation guides, including stripping techniques, termination methods (crimping, soldering), and compliance advice for local codes.

Returns and Replacements: Defective reels can be returned within 30 days for a full refund or replacement, pending verification with photos and the CoC.

Maintenance Tips: Regular inspections for sheath damage, cleaning with a dry cloth, and avoiding contact with sharp objects or chemicals.