The wholesale 3 cores 1.5mm² electric wire, commonly referred to as "fio de cobre" (copper wire) in Portuguese-speaking markets, is a widely used electrical cable designed for low-voltage power distribution and wiring applications. Characterized by its three copper conductors, each with a cross-sectional area of 1.5mm², this wire balances efficiency, flexibility, and affordability, making it a staple in residential, commercial, and light industrial settings. Available in bulk quantities, it caters to wholesalers, contractors, and manufacturers seeking reliable wiring solutions for large-scale projects. At the core of this wire are three high-purity copper conductors, typically made from 99.9% electrolytic copper. Copper is chosen for its exceptional electrical conductivity (≥97% IACS), ensuring minimal energy loss during power transmission—critical for maintaining stable voltage levels in lighting circuits, small appliances, and control systems. The 1.5mm² cross-sectional area is optimized for low-current applications, supporting up to 10–16A (depending on installation conditions), which aligns with the power demands of devices like ceiling lights, wall switches, fans, and small household electronics. The conductors are often stranded (composed of multiple fine copper strands twisted together) rather than solid, a design that enhances flexibility. This stranded construction allows the wire to bend easily around corners, fit into tight conduit systems, and withstand repeated handling during installation—key advantages for electricians working on residential renovations or commercial fit-outs. Additionally, stranded conductors reduce the risk of breakage under mechanical stress, extending the wire’s service life in dynamic environments. Each copper conductor is insulated with a durable material, most commonly polyvinyl chloride (PVC) or cross-linked polyethylene (XLPE). PVC insulation is favored for its cost-effectiveness, good electrical insulation properties, and resistance to moisture and abrasion. It operates within a temperature range of -15°C to 70°C, suitable for indoor use in dry or moderately humid environments. XLPE insulation, though slightly more expensive, offers superior thermal stability (up to 90°C) and chemical resistance, making it ideal for applications where higher temperatures or exposure to mild chemicals are a concern, such as in light industrial workshops. The three insulated conductors are typically bundled together, with an optional outer sheath (also PVC or XLPE) providing additional protection against physical damage and environmental factors. This outer layer simplifies handling, prevents tangling, and enhances durability during transportation and installation. The sheath may also be color-coded for easy identification: common color schemes include brown, black, and grey for phase conductors, with green/yellow for the ground (where applicable), ensuring compliance with wiring standards such as IEC 60446 and local electrical codes. The 3-core configuration is particularly versatile, supporting both single-phase and small three-phase systems. In residential settings, it is widely used for wiring lighting circuits, where three cores can separate live, neutral, and switched live connections, enabling independent control of multiple fixtures. In commercial spaces like offices or retail stores, it powers modular lighting systems, emergency lighting, and small power outlets. Light industrial applications include connecting control panels, conveyor belts, and low-power machinery, where reliable, compact wiring is essential. Wholesale availability of this wire is a key advantage for large-scale projects. Bulk quantities (typically 100m, 500m, or 1000m reels) reduce per-unit costs, making it economical for contractors building housing complexes, hotels, or office buildings. Manufacturers often offer customization options for wholesale orders, such as varying insulation colors, sheath materials, or reel sizes, to meet specific project requirements. Compliance with international standards ensures the wire meets stringent safety and performance criteria. It undergoes rigorous testing for insulation resistance, dielectric strength, and flame retardancy (often meeting UL 94 V-0 or equivalent standards), reducing the risk of electrical faults or fire hazards. Certification from bodies like the International Electrotechnical Commission (IEC) or regional authorities (e.g., CE for Europe, UL for North America) guarantees compatibility with global electrical systems, simplifying cross-border trade for wholesalers. In summary, the wholesale 3 cores 1.5mm² electric wire (fio de cobre) is a versatile, cost-effective solution for low-voltage electrical distribution. Its copper conductors ensure efficient power transmission, while insulated and sheathed designs provide durability and safety. Suitable for residential, commercial, and light industrial applications, it meets global standards and is available in bulk to support large-scale projects. Whether wiring a new home, outfitting an office, or supplying a manufacturing facility, this wire delivers consistent performance, making it a trusted choice for wholesalers and installers worldwide.