Historical
ANSI/NEMA FB 1-2012
Fittings, Cast Metal Boxes and Conduit Bodies for Conduit, Electrical Metallic Tubing, and Cable
ANSI/NEMA FB 1 is the industry standard for manufacturers of conduit and cable fittings and cast metal boxes to ensure that their products function as intended in the field and properly mate with cable and raceway system components.
NEMA: National Electrical Manufacturers Association [nema]