Summary: The book "Industrial and Commercial Wiring" covers methods for installation, bending of conduit, installation of conductors, and soldering in commercial and industrial settings. It discusses different hangers, scaffold types, fastening methods, and concrete installations. It addresses the use of tools, materials, and practices for commercial and industrial operations, comparing them with residential wiring. The chapter on lighting design delves into calculations, lighting requirements, spacing, luminaires, and lamp types. It explains reflection, factors affecting CU ratings, and how light intensity is affected by the distance from the source. The chapter also includes information on various forms of lighting, such as mercury lighting in shopping centers, pole arrangements in parking lots, and the impact of room size on reflection. It provides tables showing different CU ratings based on the reflectance of ceilings, walls, and floors in both commercial and industrial settings. Reflecting the nuances of lighting design, the book offers practical solutions to the challenges encountered in the field.