This abstract involves two types of aluminum cables with specifications of 3X4AWG + 1X6AWG + 2X12AWG and 3X2AWG + 1X4AWG + 2X12AWG respectively. Both adopt XLPE (cross - linked polyethylene) insulation, corresponding to models Yjlv and Yjly.​ The specifications of the two cables are expressed in a combination of "X + AWG specification", where AWG is the American Wire Gauge identifier. 3X4AWG + 1X6AWG + 2X12AWG means it contains 3 pieces of 4AWG, 1 piece of 6AWG and 2 pieces of 12AWG aluminum conductors; 3X2AWG + 1X4AWG + 2X12AWG contains 3 pieces of 2AWG, 1 piece of 4AWG and 2 pieces of 12AWG aluminum conductors. The smaller the AWG value, the larger the conductor cross - sectional area and the stronger the current - carrying capacity, and selection can be made according to power transmission requirements.​ XLPE insulation has the characteristics of good temperature resistance, high insulation strength and strong chemical stability, and is suitable for various environments. Models Yjlv and Yjly are related to sheath materials. Yjlv may be a polyvinyl chloride sheath, and Yjly may be a polyethylene sheath, both of which have certain weather resistance and are suitable for power transmission in outdoor or industrial scenarios.​ Overall, with specific specifications, high - quality insulation and suitable sheaths, the two cables can meet the power transmission needs under different power and environmental conditions.