Completely revised and updated to reflect the 2020 National Electrical Code® (NEC®), ELECTRICAL WIRING COMMERCIAL, Seventeenth Edition, offers the most current coverage available. This reader-friendly resource has long been trusted by instructors and popular with students. Filled with vibrant, full-color illustrations and photographs, the text brings even difficult concepts to life and makes complex material easier to understand. In addition to updates based on the 2020 NEC, the Seventeenth Edition features information on important new developments in electrical design and installation, an increased emphasis on green technologies and safety in the workplace, providing ample coverage of topics readers will likely encounter as working professionals in this dynamic field. Providing uniquely practical preparation for real-world success, the text includes a full set of blueprints that walk readers through designing and installing an electrical installation compliant with the latest edition of the NEC.