This article introduces the 4×240mm² power cable which uses oxygen - free copper (Cuivre Sans Oxygène) as the conductor, and this specification of cable has significant advantages in power transmission.​ Due to its high purity, the oxygen - free copper conductor has excellent conductivity, which can reduce losses during current transmission. It is suitable for high - load power transmission scenarios such as main lines of large factories and regional distribution trunk lines. Its material has strong stability, good oxidation resistance and corrosion resistance, which can extend the service life of the cable and reduce later maintenance costs. The 4 - core design is suitable for three - phase four - wire power supply, meeting the power needs of high - power equipment and large - area power consumption areas.​ Regarding the price (Prix), as a high - quality conductor material, the fluctuation of the market price of oxygen - free copper will directly affect the overall cost of the cable. Generally, the price of this specification of cable will vary due to factors such as the price of oxygen - free copper raw materials, the complexity of the production process, and market supply and demand. Compared with ordinary copper cables, oxygen - free copper cables are relatively more expensive due to their material advantages. However, in terms of long - term use stability and energy efficiency, they have a high cost - performance ratio.