The International Electrotechnical Commission (IEC) is an organization that develops and publishes international standards for electrical and electronic technologies. One of the standards developed by IEC is IEC 60034-8, which covers terminal markings and direction of rotation for rotating electrical machines.

IEC 60034-8: Rotating Electrical Machines - Part 8: Terminal markings and direction of rotation

IEC 60034-8 is a standard that provides guidelines for terminal markings and direction of rotation for rotating electrical machines, including AC and DC machines. The standard is part of the IEC 60034 series, which covers rotating electrical machines.