92051320 - Tweco FGC-200 Copper Alloy Ground Clamp 200A

Technical Overview of the Tweco 200A Ground Clamp

The Tweco 200A Ground Clamp, model FGC-200 (SKU: 92051320), is a critical component for establishing a reliable electrical circuit in manual arc welding processes. Designed for light to medium-duty applications, this clamp is engineered to handle up to 200 amperes at a 60% duty cycle. The integrity of the welding circuit is paramount for arc stability and weld quality; the FGC-200 addresses this by utilizing high-grade copper alloy materials in its jaw construction. This material choice ensures maximum electrical conductivity, significantly reducing resistance at the contact point and minimizing heat generation during prolonged welding sessions.

Mechanically, the clamp features a robust spring design that delivers consistent, high-pressure contact against the workpiece. This pressure is essential for penetrating minor surface oxidation or contaminants, ensuring a low-resistance path for the welding current. The jaw design allows for a substantial opening, typically accommodating workpieces up to 1.5 inches in thickness, making it versatile for various fabrication tasks involving plate and structural steel. The clamp's geometry is optimized to maintain a secure grip on both flat and irregular surfaces, preventing accidental detachment which can lead to arc blow or circuit interruptions.

Installation and maintenance of the welding cable are facilitated by the clamp's ball-point cable connection system. This method of connection is industry-preferred for its ability to secure the cable strands firmly while maximizing the contact area between the cable and the clamp body. The FGC-200 is compatible with welding cables up to size 2/0. By ensuring a highly efficient transfer of current from the cable to the work, the Tweco 200A Ground Clamp helps protect the welding power source from voltage drops and ensures that the operator receives the full preset amperage at the arc. This unit represents the standard of quality expected from Tweco, a leader in welding accessories.