92051120 - Tweco GC-200 Cub Copper Ground Clamp 200A

High-Performance Grounding for Professional Fabrication

The Tweco GC-200 "Cub" Ground Clamp (SKU: 92051120) represents the industry standard for reliable, low-resistance grounding in light to medium-duty welding applications. Manufactured from a high-grade copper alloy containing approximately 98% copper, this clamp is engineered to maximize electrical conductivity while maintaining the mechanical strength necessary to withstand the rigors of an industrial environment. Proper grounding is critical for arc stability and weld quality; the GC-200 ensures that the welding circuit remains consistent, reducing voltage drops that can lead to porosity or erratic arc characteristics.

One of the distinguishing technical features of the Tweco GC-series is the ball-point cable connection system. Unlike standard set screws that can shear copper strands and loosen over time due to thermal cycling, the ball-point design applies distributed pressure to the cable strands. This ensures a secure mechanical and electrical bond that maintains integrity even under high-amperage loads. The clamp is rated for 200 Amperes and is compatible with welding cables ranging from No. 4 up to 2/0, making it versatile for various power source configurations.

The mechanical design features a heavy-duty steel spring that delivers substantial jaw pressure, ensuring the copper jaws bite through light rust or scale to establish a solid connection with the workpiece. The jaw opening of approximately 1 inch (25.4mm) allows for attachment to a wide range of material thicknesses, from sheet metal to structural angle iron. The compact form factor of the "Cub" model makes it particularly suitable for bench work, automotive repair, and maintenance operations where larger, bulkier clamps would be cumbersome.

In summary, the Tweco GC-200 offers a superior balance of conductivity, durability, and ease of use. It is an essential component for any welding setup requiring up to 200 amps of power, providing the assurance of a high-quality ground connection that professional welders demand.