A new edition of NFPA 79 was published in January 2021 as Edition 2021. The National Electrical Code (NEC) is the supreme regulation for electrical installations in the USA and refers to NFPA 79 (Electrical Standard for Industrial Machinery) in Art. 670 for further requirements relating to industrial machines. In addition to UL 508A (Industrial Control Panels), NFPA 79 thus forms an important basis for compliance with the technical regulations for the electrical equipment of machines in the USA. We inform you about important changes and their effects on the design and construction of industrial control panels and machines for the USA.