Arc welding equipment. Electrode holders Arc-welding equipment, Arc welding, Welding equipment, Welding, Holding devices, Welding electrodes, Metal-arc welding, Manually-operated devices, Performance, Rated current, Dimensional tolerances, Electrical safety, Electrical testing, Dielectric-strength tests, Type testing, Thermal testing, Flammability, Temperature rise, Fire tests, Pull-out tests, Impact testing, Marking, Instructions for use, Designations