This paper introduces two types of power cables: Duplex N2xoh XLPE 1kV 3X1X120mm² cable and Nyy PVC triple three-core copper cable (specification 8.89). Both are suitable for low-voltage distribution systems but differ in materials and characteristics.​ The Duplex N2xoh XLPE cable uses cross-linked polyethylene (XLPE) insulation with a rated voltage of 1kV. Its structure consists of 3 groups of single-core 120mm² conductors, and the "Duplex" label indicates its dual-group parallel design, suitable for scenarios requiring multi-circuit power supply. The XLPE insulation layer has strong temperature resistance (long-term 90℃) and stable insulation performance. Moreover, the halogen-free and environmentally friendly material produces low toxicity and low smoke when burned, making it ideal for industrial areas, high-rise buildings, etc., with high safety requirements.​ The Nyy PVC triple three-core copper cable uses polyvinyl chloride (PVC) for insulation and sheath, with high-purity copper as the conductor. The specification 8.89 corresponds to specific structural dimensions. PVC material has low cost, good corrosion resistance and mechanical strength, suitable for general commercial buildings, civil distribution and other scenarios with moderate environmental protection requirements. The three-core design is compatible with three-phase circuits, enabling convenient installation.​ Both cables ensure conduction efficiency through copper conductors. The former emphasizes safety, environmental protection and high-temperature stability, while the latter highlights economy and versatility, providing targeted solutions for different power distribution needs.