What is the recommended practice for electrical grounding to ensure welding safety?

• A. Provide a solid ground path by connecting the ground clamp to the workpiece and to the power source.
• B. Ground the circuit by touching it with the welding rod.
• C. Ground is optional for all portable welders.
• D. Ground to a metal container not connected to the circuit.

Answer: (A)

A solid ground path is crucial because the welding current must have a low-resistance return path back to the power source to complete the circuit safely. The ground clamp should be attached to the workpiece (or a dedicated grounding point on the setup) and connected to the power source’s ground so the arc current flows through a direct, reliable path. This minimizes shock risk and prevents stray currents from energizing nearby metal or tools. Grounding to a metal container that isn’t part of the circuit won’t close the electrical loop, and simply touching the rod to ground does not provide a proper return path. Grounding is required for portable welders to maintain a safe, stable arc and protect the operator.