What is necessary to connect to the GTAW power source to protect the welder from shock?

• A. Ground fault interrupter
• B. Insulating gloves
• C. None of the above
• D. Safety glasses

Answer: (C)

In GTAW, the electrical safety relies on the welding system’s design and how the circuit is completed, not on an extra device you attach to the power source. The return path for the current runs through the work clamp to the workpiece, and the equipment is built with proper insulation and grounding to minimize shock risk. Because of that, there isn’t a single additional component you must connect to the power source specifically to protect against shock.

Ground fault interrupters are useful in general electrical safety, but welding systems are typically designed to operate without relying on GFCIs, and nuisance trips can occur if used on some welding circuits. Insulating gloves and safety glasses are important for protecting against burns, UV exposure, and debris, but they don’t provide a connection-based protection to the power source for electrical shock. They are PPE, not connection safeguards.

So, none of those listed items is something you must connect to the GTAW power source specifically for shock protection. The safe setup comes from proper grounding of the work and good, intact leads, along with appropriate PPE and following the machine’s safety guidelines.