What condition must welding cables meet for safe usage?

Welding cables must be flexible and in good repair to ensure safe usage. Flexibility is crucial because it allows the cables to be easily maneuvered and positioned during welding operations without causing strain or damage to the insulation or conductors. Additionally, being in good repair means that there should be no frayed or damaged sections, which could lead to electrical hazards such as shock or short circuits. Ensuring that welding cables meet these criteria helps maintain a safe work environment and reduces the risk of accidents related to electrical equipment.