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Our core product range — precision-engineered flat braided copper wires designed for high-efficiency solar panel array wiring, delivering superior conductivity and long-term reliability in photovoltaic installations.
Flat braided copper wire combines the highest electrical conductivity of pure copper with a woven, multi-strand architecture that delivers exceptional flexibility, vibration resistance, and thermal stability — making it the engineering-preferred solution for solar panel array wiring in both residential rooftop and utility-scale photovoltaic (PV) installations worldwide.
Flat braided copper wire is manufactured by weaving multiple fine copper strands — typically made from high-purity T1 electrolytic copper (≥99.95% Cu) — into a flat, ribbon-like braid structure. This construction method yields a conductor that is simultaneously highly flexible, thermally efficient, and mechanically robust. Unlike round cables, the flat profile allows for compact routing in tight panel junction boxes, inverter enclosures, and bus-bar connections. The multi-strand braid design also distributes mechanical stress evenly, preventing fatigue cracking that is common in solid conductors subjected to thermal cycling and wind-induced vibration in outdoor solar installations.
Manufactured from 99.95% electrolytic copper, ensuring minimal resistivity (≤0.01724 Ω·mm²/m), maximum current-carrying capacity, and outstanding corrosion resistance in outdoor PV environments exposed to UV, humidity, and salt spray.
Hundreds of ultra-fine copper strands are precision-braided at 8 or 12 spindles, creating a flat cross-section that enables tight-radius bending, vibration damping, and stress relief — critical properties for solar panel array wiring exposed to constant thermal expansion and contraction cycles.
The flat geometry allows efficient cable management in solar combiner boxes, string inverters, and panel frames. It reduces installation space by up to 40% compared to equivalent round cables and enables neat, professional wiring layouts that simplify maintenance and inspection.
Engineered to perform reliably from -40°C to +200°C, flat braided copper wire maintains its electrical and mechanical properties through extreme temperature swings common in rooftop solar arrays, desert utility farms, and cold-climate ground-mount installations.
Optional tin-plating or silver-plating treatments provide an additional barrier against oxidation and corrosion, extending service life in coastal, tropical, and high-humidity solar installations where bare copper may degrade over time.
Available in a wide range of widths, thicknesses, and lengths. Custom-cut, welded-end, and crimped-terminal configurations are offered to match specific solar panel module designs, junction box layouts, and inverter connection requirements.
The global photovoltaic industry is experiencing unprecedented growth, and flat braided copper wire has emerged as a critical enabling component at every scale of solar deployment.
As the renewable energy transition accelerates globally, the requirements placed on solar array wiring components are evolving rapidly. Here are the key trends shaping the future of flat braided copper wire in photovoltaic applications.
Modern utility-scale solar farms increasingly operate at 1500V DC string voltages to reduce balance-of-system costs. Flat braided copper wire is being engineered with enhanced insulation compatibility and tighter dimensional tolerances to meet the arc-flash and dielectric requirements of these high-voltage DC architectures, replacing conventional round cables in critical bus-bar and combiner-box applications.
Next-generation bifacial solar panels and TOPCon/HJT cells generate higher current densities per module. Flat braided copper wire with increased cross-sectional area and lower resistance per unit length is increasingly specified by module manufacturers to handle these elevated currents without excessive resistive losses or thermal hotspots at junction box connections.
Solar project developers and EPCs are under growing pressure from ESG mandates and green procurement policies to source materials with high recyclability and low carbon footprint. Copper's near-100% recyclability and the energy-efficient manufacturing processes adopted by leading Chinese producers like Xingma are increasingly cited as key procurement criteria in tender specifications for large-scale renewable energy projects.
The solar manufacturing industry is rapidly automating panel assembly and field installation processes. Flat braided copper wire supplied in precision-cut lengths, with pre-attached terminals or welded ends, is in high demand for robotic assembly lines and prefabricated solar mounting systems. Chinese suppliers with advanced CNC cutting and automated welding capabilities are gaining significant market share in this segment.
BIPV applications — where solar modules are integrated directly into building facades, roofing materials, and glass curtain walls — demand ultra-thin, ultra-flexible flat braided copper wire that can navigate complex architectural geometries without compromising electrical performance. This emerging segment is driving innovation in fine-strand braiding technology and miniaturized flat wire formats.
The co-location of battery energy storage systems with solar arrays is creating new wiring challenges at the DC bus interface between PV arrays and battery banks. Flat braided copper wire's combination of high current capacity, vibration tolerance, and compact flat profile makes it ideal for the high-cycle, high-current connections within lithium-ion battery packs and battery management system (BMS) modules in solar-plus-storage installations.
Flat braided copper wire serves a diverse range of critical connection points across the full solar energy value chain — from individual panel cells to grid-scale transmission infrastructure.
In residential PV systems (typically 3–20 kW), flat braided copper wire is used for inter-module string connections, junction box internal wiring, and grounding/bonding conductors. Its flexibility allows installers to work efficiently in confined roof spaces, while its corrosion resistance ensures 25+ year service life matching the panel warranty period.
Large commercial rooftop installations (100 kW–5 MW) require high-current flat braided copper wire for combiner box bus-bars, string-to-inverter DC cables, and AC output connections. Custom-width flat braid configurations allow engineers to optimize current density and minimize voltage drop across long cable runs in sprawling industrial rooftop arrays.
Utility-scale solar projects (50 MW–1 GW+) demand flat braided copper wire at massive volumes for tracker system wiring, underground DC collection cables, substation bus-bars, and transformer connections. The ability to supply custom-cut lengths with welded or crimped terminals directly to project specifications significantly reduces on-site labor costs and installation time for EPC contractors.
Floating solar installations on reservoirs and water bodies face unique challenges including high humidity, water splash, and constant mechanical movement of floating platforms. Tin-plated flat braided copper wire with enhanced corrosion protection is specifically engineered for these environments, providing reliable electrical connections that withstand the dynamic mechanical stresses of floating structures.
At the DC coupling interface between solar arrays and battery storage systems, flat braided copper wire handles high charge/discharge currents with minimal resistive losses. Its flat profile is ideal for the compact wiring harnesses within battery rack assemblies, and its flexibility accommodates the vibration and thermal expansion inherent in large-format lithium battery systems.
Solar carports and EV charging stations integrated with PV generation require robust DC wiring between solar arrays, battery buffers, and fast-charging dispensers. Flat braided copper wire provides the high-current, low-inductance connections needed for rapid charge/discharge cycles, while its compact flat form factor suits the aesthetic design requirements of modern EV charging architecture.
Zhejiang Xingma Co., Ltd. was established in 2019 and is located in Liushi, the capital of electrical appliances in China. It is an enterprise mainly engaged in metal products, wire and cable processing and sales; import and export of goods and technology. The company revolves around the construction of a modern enterprise mechanism and mass production of mechanical automation.
The leading products include copper wire, copper braided wire, copper stranded wire, soft copper stranded wire, brush wire, carbon brush wire, soft connection series products, metal stamping parts and other products — best-selling at home and abroad, deeply trusted and welcomed by customers worldwide.
Zhejiang Xingma Copper Industry Co., Ltd. has a factory building with a construction area of more than 10,000 square meters and more than 100 employees. It has more than 300 domestic top-level manufacturing machines, including: Dingtian wire drawing machines, Fuchuan beam machines, pipe twisting machines, braiding machines, annealing furnaces, middle drawing machines, automatic cutting machines, welding machines, air dryers, microscope hardness testers, automatic punching machines, 160-ton punching machines, wire dividing machines, flattening machines, large polishing machines, stamping parts cleaning machines, bench drills, and packing machines.
With an annual production capacity of more than 2,000 tons, Xingma is fully equipped to fulfill large-volume orders for flat braided copper wire destined for solar panel array wiring projects of any scale — from residential rooftop installations to gigawatt-scale utility solar farms.
The company abides by the Universal Declaration of Human Rights and major United Nations conventions, respects human and labor rights, and is committed to scientific and technological innovation. Passed ISO9001 quality system certification and ISO14001 environmental management system certification in 2020. In 2021, it won the star enterprise and excellent production enterprise awards.
Every batch of flat braided copper wire undergoes rigorous quality inspection including conductivity testing, tensile strength measurement, dimensional verification, and surface quality assessment — all traceable to ISO 9001 quality management standards.
From custom braid widths and strand counts to specific lengths, surface treatments, and terminal configurations — Xingma's engineering team works directly with solar project developers, EPC contractors, and module manufacturers to deliver bespoke flat braided copper wire solutions.
With 2,000+ tons annual production capacity, 300+ advanced manufacturing machines, and streamlined logistics from Liushi — China's electrical capital — Xingma delivers consistent on-time supply to solar projects across Asia, Europe, the Americas, the Middle East, and Africa.
Explore our full range of high-purity copper wire and braided conductor products — engineered for solar panel array wiring, energy storage, power electronics, and industrial applications.
