Electrode holder, commonly known as a welding clamp or stinger, is an essential manual tool in arc welding processes. Its primary function is to securely grip and conduct electrical current to the welding electrode while providing the welder with a safe and insulated handle for precise manipulation during operation.

Constructed from durable, heat-resistant materials like copper alloy, the holder features strong, spring-loaded jaws designed to clamp firmly onto the electrode without slippage. A well-insulated outer shell, typically made of rubber or plastic, protects the welder from electrical shock and extreme heat generated at the connection point. The electrical cable from the welding power source is securely attached to the holder through a robust mechanical connection.

Key design considerations include excellent conductivity to minimize power loss, a comfortable and ergonomic grip for reduced operator fatigue, and robust construction to withstand harsh workshop environments and repeated use. Electrode holders are rated by their maximum current capacity (e.g., 300A, 500A) to ensure safe operation and are selected based on the specific amperage requirements of the welding task.

In summary, the electrode holder is a critical interface between the power supply and the electrode, enabling safe, controlled, and efficient arc welding.