NFPA 791-2021 PDF Download

NFPA 791 is a recommended practice and procedure standard that focuses on the evaluation of unlabeled electrical equipment to ensure safety and compliance with nationally recognized standards. The standard is designed to facilitate acceptance of evaluation results by providing consistent and reliable procedures.

One of the primary purposes of NFPA 791 is to provide Authorities Having Jurisdiction (AHJs) with industry-approved recommended practices and procedures. This includes evaluating unlabeled electrical equipment, determining the acceptability of evaluation results from recognized third-party evaluation bodies, and evaluating multiple units of the same equipment.

The 2018 edition of NFPA 791 includes updates and edits to align with the current edition of the National Electrical Code (NEC) and relevant nationally recognized standards. Changes are also made to sections related to overcurrent protection and marking for fuses and replacement elements.