Historical
ANSI/NEMA/IEC 60974-1-2019
Arc welding equipment - Part 1: Welding power sources
This part of IEC 60974 is applicable to power sources for arc welding and allied processes designed for industrial and professional use, and supplied by a voltage not exceeding 1 000 V, battery supplied or driven by mechanical means.
NEMA: National Electrical Manufacturers Association [nema]