This article introduces aluminium electrical cables with cross - linked polyethylene (XLPE) as the insulation layer, covering various 4 - core cross - section specifications such as 4×70mm², 4×95mm², 4×120mm², 4×150mm², 4×185mm², 4×240mm², and 4×300mm², which can meet the power transmission needs of different scenarios.​ This series of cables has outstanding performance and practicality: The aluminium conductor has good conductivity and economy, suitable for medium and low - voltage power transmission; The XLPE insulation layer has strong temperature resistance, which can maintain a stable insulation effect in high - temperature environments, effectively reducing the risk of electric leakage and ensuring electricity safety. The 4 - core design meets the needs of three - phase four - wire power supply, without the need for additional laying of neutral wires, simplifying the wiring process.​ In terms of application, small cross - sections (4×70mm², 4×95mm²) are suitable for shop power distribution and small - sized equipment power supply; medium cross - sections (4×120mm² to 4×185mm²) can meet the total power distribution of multi - storey buildings and the electricity demand of small and medium - sized industrial equipment; large cross - sections (4×240mm², 4×300mm²) are suitable for medium and high - load scenarios such as factory main lines and regional distribution trunk lines. Overall, its specification diversity and structural rationality can cover various power transmission needs.​