The 25mm², 50mm², and 240mm² single - core XLPE cables (0.6/1kV) are a kind of low - voltage power transmission products with strong flexibility and excellent performance. They are designed with black sheaths and are widely used in scenarios such as building power distribution, industrial equipment connection, and outdoor temporary power supply.​ This series of cables uses high - purity copper as the conductor, with a purity of more than 99.9% and a conductivity of ≥58MS/m, ensuring low power transmission loss. There are significant differences in current - carrying capacity among different specifications: the 25mm² cable has a current - carrying capacity of about 80 - 100A, which is suitable for small motors and household main lines; the 50mm² cable has a current - carrying capacity of 120 - 150A, which can meet the power supply requirements of medium - sized air conditioners and workshop equipment; the 240mm² cable has a current - carrying capacity of up to 400 - 450A, which can support high - power needs such as large industrial machinery and substation outgoing lines.​ The insulation layer is made of XLPE (cross - linked polyethylene) material. After warm water cross - linking treatment, its temperature resistance range is extended to - 40℃ to 90℃, the insulation resistance is ≥1000MΩ·km, and the breakdown field strength is ≥20kV/mm, which can resist the impact of harsh environments such as humidity and oil pollution. The black sheath is made of weather - resistant PVC material, which meets the GB/T 2951.5 standard. It has the characteristics of UV resistance, acid and alkali resistance, and mechanical wear resistance. It can maintain stable performance whether laid outdoors or buried.​ Flexibility is its core advantage. The minimum bending radius is only 6 times the outer diameter of the cable, which is suitable for complex laying such as threading in narrow spaces and beam wrapping. The single - core design reduces the 束缚 of multi - core stranding, and performs well in temporary power supply scenarios with frequent movement (such as construction and exhibition layout). It is not easy to crack after repeated bending.​ In practical applications, 25mm² cables are often used for incoming lines of residential buildings and power distribution of small shops; 50mm² cables are used as main lines in shopping mall counters and office building strong electric wells; 240mm² cables play an important role in factory production lines and data center backup power lines. Its black appearance has both dirt resistance and concealment, which can reduce visual 突兀 when laid outdoors. Moreover, the anti - aging performance of the sheath ensures a service life of more than 15 years, providing efficient and reliable power support for various low - voltage power distribution scenarios.