How to Prevent Electric Shock to ARC Welders

The arc flash is pure electricity.

Arc welders use a large transformer to convert electrical power into a method for melting a welding rod. The welding rod is melted to hold together two pieces of metal. Since large amounts of electricity are utilized for melting the metal, there is always the potential for an electrical shock. Minimizing the possibility of a hazardous situation is every welder's responsibility prior to striking that first arc for welding.

Things You'll Need

• Black electrical tape
• Replacement welding cables (optional)
• Approved cable connectors
• Wrenches
• Dry area
• Welding safety equipment

Instructions

1. Inspect the welding cables prior to each use. The cables must be in good condition with little to no cracks or breaks in the insulation. Repair the insulation cracks with a few rounds of black electrical tape to insulate the cable from inadvertent ground contact. Replace all welding cables that are broken or have frayed copper wires. Use approved cable connectors to splice welding cables. These connectors must be approved for the amount of electrical current an arc welder outputs.

2. Tighten all cable connections using the correct wrenches. Loose electrical connections will cause electrical shock hazards.

3. Weld in only dry and well-ventilated areas. Using an arc welder in wet and damp areas will cause electrical shock hazards. Never weld while standing in water; a poor grounding clamp may fail and you will become the ground.

4. Wear only approved welding safety equipment and make sure that equipment is in good shape with no surface damage. Poor welding gloves will not only conduct heat, but will also conduct electricity as well. Welding gloves that have breaks or cracks in the leather will allow electrical power to enter into your hands if you are touching the welding area.

Tips & Warnings

• Check that the electrical installation of the arc welder conforms to local and regional electrical codes. If you are unsure as to what these codes are; contact your local electrical inspector for the correct installation method.

References

• State of California: Arc Welding Safety
• National Ag Safety Database: Arc Welding Safety