Arc welding apparatus; parts and accessories in this class for arc welding apparatus; power sources in this class for arc welding apparatus; electrode wire feeders and dereelers in this class; control devices in this class for arc welding apparatus, including filler wire and electrode feed controllers and gas flow controllers for gas shielded arc welding; cable assemblies for arc welding; welding guns, including gas shielded and submerged arc welding guns; electrode holders; earth clamps; consumable and non-consumable arc welding electrodes including solid and tubular wires or rods in continuous and discontinuous form, flux coated and flux cored electrodes wires and rods and self shielding flux cored electrode wires and rods; arc stabilising devices; electrical cables and leads; protective clothing in this class including helmets; face screens, goggles and spectacles; leather aprons, gloves, jackets and leggings