Boxes and Fittings is an interactive training module designed to familiarize trainees with various types of boxes and fittings used in electrical installations. After completing this module, the trainees should be able to identify different types of boxes and explain how to properly size outlet boxes, pull boxes, and junction boxes. They should also be able to identify different types of couplings, locknuts, and bushings, and explain what seal-off fittings are and how they are installed. In addition, they should be able to describe the three classes of hazardous locations that are identified in the NEC and describe requirements for safely installing boxes and fittings in hazardous locations.