Final answer:
3) be repaired by a professional. Arc welding cables in need of repair must be repaired by a professional. Using damaged cables with caution is not recommended.
Step-by-step explanation:
Arc welding cables in need of repair must be repaired by a professional. It is important to seek the help of a professional because welding cables can be dangerous if not repaired properly. Using a damaged cable can result in electrical hazards, including shock and fire.
The repair process typically involves replacing the damaged section of the cable or fixing any broken connections. A professional welder will have the knowledge and experience to identify and fix the issues with the cables, ensuring they are safe to use.
Using damaged cables with caution is not recommended because the risks involved are significant. It is generally best to discard and replace a damaged cable rather than attempting to repair it yourself.