Amazon.com description: Product Description: This new text/workbook covers topics specifically relating to the design and maintenance of commercial and industrial wiring systems. The main focus is on installing enclosures, conduit bodies, fittings, and wiring, and the procedures required to work on them safely. The book is designed around the latest technologies in service entrances, low-voltage systems, conductors and cables, and system designs. Review questions at the end of each chapter provide a variety of assessment opportunities.