Several characteristics of welding cables: (1) YH cable is working under low voltage (maximum voltage of 200V) high current, requires a certain patience. (2) welding wire cable long-term allowable working temperature should not exceed 65 ℃. (3) electrical wiring cables frequently moving, twisting around and cast, requiring soft, bending performance. (4) in the cast of the vulnerable scrape sharp steel components, wipe, and called for cable insulation resistance to tearing, abrasion and other mechanical properties. (5) the use of complex environmental conditions, such as sun, water boiling, exposure to mud, oil, acid liquid, etc., require a certain degree of weather resistance and oil resistance, solvent resistance. (6) sometimes encounter hot welding parts, requiring heat distortion resistance. (7) often move to require small diameter and light weight. Because of such cable electrical performance requirements, and the use of complex environmental conditions, the structure required to meet a variety of complex environmental factors are inappropriate. Attention to improving the conditions of use, when used, to prevent external damage.