Modern Commercial Wiring

Harvey N. Holzman's Modern Commercial Wiring, 9th Edition provides a clear, practical introduction to commercial electrical systems for technical students in grade levels 11 through 14. Published by Goodheart-Willcox, this textbook explains fundamental principles of commercial installation, electrical design, system maintenance, and practical troubleshooting.

The material advances from core concepts, including conductors, overcurrent protection, transformers, grounding, and service distribution, to specialized real-world commercial installations. Coverage includes motor control circuits, emergency power systems, hazardous location wiring, and specialized pool and fountain installations, giving technical students grounded exposure to commercial jobsites.

This edition aligns with 2023 National Electrical Code (NEC) standards and integrates NEC Code Alerts alongside Know the Code review questions to reinforce code compliance. When combined with Modern Residential Wiring, the volume offers a cohesive framework for a structured two-course instructional sequence in vocational electrical wiring and electrician training programs.