Thw-2 green copper grounding wire is a high-performance cable specially designed for safe grounding of electrical systems. It offers two specifications: 12AWG (2.05mm²) and 4AWG (21.15mm²). The insulation layer is made of PVC material resistant to 90°C high temperature, and the green outer sheath complies with international grounding identification standards. It is widely used in grounding loops of residential, commercial buildings and industrial facilities, providing a reliable fault current discharge channel for various electrical equipment.​ The core advantages of this series of cables lie in their excellent conductivity and temperature resistance. The conductor is made of high-purity electrolytic copper. The DC resistance of 12AWG conductor does not exceed 1.588Ω/km, and that of 4AWG does not exceed 0.248Ω/km, which can quickly conduct fault current into the ground and reduce the risk of electric shock. The 90°C temperature-resistant PVC insulation layer not only has good insulation performance (insulation resistance ≥100MΩ), but also can resist aging in high-temperature environments, making it suitable for places with high temperatures such as kitchens and boiler rooms. The green outer sheath clearly identifies the grounding function, avoiding confusion with other cables during wiring and improving installation safety.​ The 12AWG specification is suitable for grounding of small electrical equipment, such as household distribution boxes, lighting circuits, and metal casings of small household appliances; the 4AWG specification is used for connecting large equipment to the main grounding network, such as industrial motors, transformers, and main grounding trunks of commercial buildings. It complies with international standards such as UL and has passed strict mechanical performance and electrical safety tests. The bending radius is 6 times the outer diameter of the cable, which is convenient for laying in narrow spaces. Whether buried, conduit installation or surface-mounted, it can maintain stable performance and is a key component to ensure the safe operation of electrical systems.