This copper ground wire, prominently marked with green and yellow two-color，offers three core specifications of 25mm², 50mm², and 95mm². It is specifically designed for lightning protection and fault protection in power systems, belonging to industrial - grade professional equipment. Its core advantage stems from the use of high - purity electrolytic copper, which not only has excellent conductivity (conductivity ≥ 98%), ensuring that current can be quickly and low - loss import the earth when a fault or lightning strike occurs, but also has excellent corrosion resistance and oxidation resistance. It can adapt to complex environments such as outdoors, humidity, and high temperatures, significantly extending the service life and reducing maintenance costs. In terms of structural design, the ground wire adopts a multi - strand stranding process, with the diameter of a single copper wire precisely controlled within the range of 0.1 - 0.3mm. This not only ensures the overall flexibility, facilitating construction in narrow spaces or complex wiring environments, but also improves heat dissipation efficiency by increasing the conductor surface area, avoiding overheating caused by short - term large current passing through. The outer insulating sheath is made of weather - resistant PVC material, which has the characteristics of acid and alkali resistance, ultraviolet resistance, and mechanical damage prevention. It can effectively protect the internal copper conductor from external environmental erosion. At the same time, the internationally universal green and yellow dual-color marking can clearly distinguish the ground wire from other cables, reducing the risk of misoperation during construction. From the perspective of application scenarios, the 25mm² specification is suitable for grounding protection of small power distribution equipment, household circuits, and weak current systems, such as lightning protection grounding of household appliances and communication base stations; The 50mm² specification is widely used in fault grounding of medium - sized industrial equipment, factory power distribution systems, and building power main lines, and can meet the safety protection needs under medium current load; As a high - current carrying model, the 95mm² specification is mainly used in key power facilities such as high - voltage substations, large industrial plants, and power stations. It can effectively divert the huge pulse current generated by lightning strikes or the fault current during line short circuits, avoiding equipment damage or casualties. In addition, the ground wire is produced in strict accordance with the International Electrotechnical Commission (IEC) and national GB standards. Each batch of products has undergone multiple quality inspections such as conductivity testing, high - voltage resistance testing, and mechanical strength testing to ensure reliability in extreme situations. Its professional - grade positioning not only meets the safety requirements of conventional power engineering, but also can provide stable grounding protection for precision equipment in special environments. It is an indispensable key component in the safe operation of power systems, building a solid defense line for power safety in industrial production, public facilities, commercial buildings and other fields.

The 16mm² and 25mm² green-yellow copper earth cables are core components of electrical safety systems, specifically designed for grounding protection. They use high-purity electrolytic copper as conductors, coated with weather-resistant PVC insulation, and adopt internationally recognized green-yellow dual-color marking. Widely applied in grounding circuits of construction, industry, and power sectors, they provide reliable leakage protection for equipment and personnel.​ In terms of specifications, the key differences between the two earth cables lie in conductor cross-section and current-carrying capacity. The 16mm² earth cable’s conductor is stranded by multiple fine copper wires, with a total cross-sectional area precisely controlled at 16±0.8mm². At room temperature (20℃), the conductor’s DC resistance is ≤1.15Ω/km, and the short-time withstand current can reach 1500A (for 1 second). It is suitable for small and medium-sized power distribution systems, main grounding terminals in civil buildings, and grounding of industrial equipment with power ≤50kW. The 25mm² earth cable has a conductor cross-sectional area of 25±1.2mm², DC resistance ≤0.74Ω/km, and short-time withstand current of 2500A (for 1 second), adapting to large factories, substation grounding grids, and safety grounding of high-power equipment (above 50kW).​ In terms of materials, the conductor is made of electrolytic copper with purity ≥99.95%, formed through multi-strand stranding technology, which combines excellent conductivity and flexibility. The stranded structure allows the earth cable to be bent and laid in narrow spaces (minimum bending radius is 6 times the outer diameter), while high-purity copper ensures that leakage current can be quickly conducted into the ground, reducing the risk of electric shock. The insulation layer is PVC material resistant to temperatures from -20℃ to 70℃, with insulation resistance ≥100MΩ. It has acid and alkali resistance, UV resistance, and mechanical wear resistance, maintaining stable performance even in humid and dusty industrial environments. The green-yellow two-color insulation strictly complies with IEC 60446 standards, intuitively identifying the grounding function to avoid confusion with phase lines and neutral lines, reducing wiring errors.​ In application scenarios, 16mm² earth cables are often used for safety grounding of residential distribution box grounding bars, air conditioner outdoor units, water heaters and other household appliances, as well as floor grounding trunks in commercial buildings. 25mm² earth cables are mainly used for grounding of large motors and transformer enclosures in factory workshops, main lines of substation grounding grids, and grounding systems of new energy charging piles. Both earth cables have passed the inspection of GB 50169 "Code for Construction and Acceptance of Grounding Devices" and need to be reliably connected to grounding bodies (such as galvanized angle steel, copper rods) to form a low-impedance grounding loop (grounding resistance ≤4Ω). With a service life of over 20 years, they can effectively cope with long-term current impact and environmental erosion, serving as the "lifeline" to ensure the safe operation of electrical systems.

The Earth Yellow Green Wire Copper Ground Earth Cable 35mm² and 50mm² PVC Single Conductor Insulated Electric Power Cable Wire is a vital safety-focused electrical component designed to establish reliable grounding in low-to-medium voltage systems. Its distinct yellow-green dual-color insulation adheres to global electrical safety standards (such as IEC 60446 and NEC 2023), serving as an unambiguous visual identifier for grounding conductors—eliminating the risk of miswiring with phase or neutral cables, which is critical for preventing electric shock and equipment damage. This series, available in 35mm² and 50mm² cross-sectional areas, is engineered to cater to a wide range of grounding needs, from residential and commercial buildings to light industrial facilities, where it provides a low-resistance path for fault currents to dissipate into the ground. At the heart of this cable’s functionality is its high-purity copper conductor, a material selected for its exceptional electrical conductivity and corrosion resistance. The copper used is electrolytic grade with a minimum purity of 99.95%, ensuring optimal current flow and minimal resistance—two key factors for effective grounding. The 35mm² conductor, typically constructed as a stranded core (19 strands of 1.5mm diameter), offers a balance of flexibility and conductivity, while the 50mm² variant (19 strands of 1.8mm diameter) provides enhanced current-carrying capacity for higher fault current scenarios. For instance, the 35mm² copper conductor has a resistance of ≤0.524Ω/km at 20°C, allowing it to safely handle fault currents up to 800A for 1 second—sufficient for residential and small commercial systems. The 50mm² variant, with a resistance of ≤0.378Ω/km, can manage fault currents up to 1200A for 1 second, making it suitable for light industrial equipment like small motors (100kW–200kW) and commercial HVAC systems (50kW–100kW). The PVC (Polyvinyl Chloride) insulation further elevates the cable’s safety and durability. Formulated with a blend of flame-retardant additives (calcium carbonate and antimony trioxide), the insulation meets IEC 60332-1 standards, meaning it self-extinguishes within 30 seconds of removing the ignition source—reducing the risk of fire spread in case of electrical faults. The insulation thickness is calibrated to provide mechanical protection while maintaining flexibility: 1.0mm for the 35mm² cable and 1.2mm for the 50mm² variant. This thickness ensures the cable can withstand minor impacts during installation (e.g., contact with conduit edges) without compromising its insulating properties. Additionally, the PVC insulation is resistant to moisture, common household chemicals (detergents, bleach), and mild industrial oils, making it suitable for both indoor (e.g., building electrical panels) and outdoor (e.g., garden lighting grounding) applications. The yellow-green coloration is achieved using stable, UV-resistant pigments, ensuring the cable remains easily identifiable even after years of exposure to sunlight or harsh environments. Electrical performance is tailored to each size to align with specific application demands. The cable’s rated voltage of 1kV (rms) positions it firmly in low-to-medium voltage systems, compatible with the 230V/400V grids commonly used in residential, commercial, and light industrial settings. Insulation resistance is another critical metric, with both sizes boasting a minimum of 100MΩ at 20°C (tested with a 1kV megohmmeter). This high insulation resistance prevents current leakage, ensuring that fault currents are directed exclusively to the ground rather than escaping through damaged insulation. In practical terms, this means that in the event of a short circuit (e.g., a phase wire touching a metal appliance enclosure), the cable quickly channels the fault current to the ground, triggering the circuit breaker to trip within 0.5–1 second—protecting both personnel and equipment from harm. The application scope of this cable series is diverse, spanning multiple sectors. In residential settings, the 35mm² variant is used to ground main electrical panels, household appliances (refrigerators, electric ovens), and outdoor fixtures (garden lights, EV charging stations). Its flexibility allows it to be routed through wall cavities, under floorboards, and around corners—critical for navigating the tight spaces common in modern homes. The 50mm² cable is ideal for commercial buildings such as shopping malls, offices, and hotels, where it grounds large HVAC systems, elevator motors, and backup generators. In light industrial environments (e.g., small manufacturing workshops, food processing plants), the 50mm² cable is employed to ground small machinery, conveyor belts, and control panels—where higher fault currents may occur due to the larger electrical loads. Compliance with international and regional standards ensures the cable’s reliability and market acceptance. Beyond IEC 60446 and IEC 60228 (conductor standards), the cable meets regional requirements such as GB/T 12706 (China), UL 44 (USA), and BS 6346 (UK). Rigorous testing is conducted during production to validate these standards: conductor resistance tests confirm minimal current loss, dielectric strength tests (2kV AC for 5 minutes) ensure no insulation breakdown, and mechanical bending tests (10 cycles around a mandrel 10× the cable’s outer diameter) verify flexibility. These tests guarantee that the cable performs consistently under real-world conditions, giving installers and end-users confidence in its safety. Durability and ease of installation are additional advantages of this cable series. The stranded copper conductor design enhances flexibility, making the cable easy to handle and route—even in confined spaces. Unlike solid-core conductors, which can crack under repeated bending, the stranded core maintains its integrity, reducing the need for repairs or replacements. The PVC insulation’s resistance to aging ensures a service life of 15–20 years under normal operating conditions (temperature range: -15°C to 70°C), minimizing long-term maintenance costs. Installation is further simplified by the cable’s compatibility with standard grounding components, such as copper lugs, clamps, and earth rods—no specialized tools are required, reducing installation time and labor expenses. In summary, the Earth Yellow Green Wire Copper Ground Earth Cable 35mm² and 50mm² PVC Single Conductor Insulated Electric Power Cable Wire is a reliable, safe, and versatile solution for grounding in low-to-medium voltage systems. Its high-conductivity copper conductor, flame-retardant PVC insulation, and compliance with global safety standards make it suitable for residential, commercial, and light industrial applications. Whether protecting households from appliance faults, commercial buildings from HVAC system failures, or light industrial facilities from machinery malfunctions, this cable delivers the performance and safety needed to mitigate electrical hazards—solidifying its role as a fundamental component in safe electrical design.