Nema Mg1-32 Amp- 33 -

Note: These sections are part of the historical "MG1-1967" revision and early supplements. In modern MG1 standards (MG1-2016 or later), these topics are covered under updated clause numbers (e.g., Part 31 for Large Machines). This article reflects the original context of -32 and -33. When specifying or maintaining large alternating current (AC) induction motors, two of the most critical performance parameters are temperature rise and service factor . In the historical NEMA MG1 standards (circa 1967–1980s), these topics were specifically addressed in MG1-32 and MG1-33 .