Southwire, one of North America’s largest wire and cable producers, has released the third edition of their overhead conductor manual. Originally published in 1994, the manual has become the design reference of choice for engineers. This practical handbook is a comprehensive guide on evaluating the design, construction, and uprating of overhead transmission systems while containing information on best practices, new industry standards, and changes in the National Electrical Safety Code. “As a world leader in overhead electric power transmission products, we are always seeking innovative solutions to help our customers deliver the best results when it comes to overhead transmission line design,” said Paul Springer, Director of Overhead Transmission Engineering at Southwire., New material from the overhead conductor manual third edition include:

• Information on the innovative C^7® Overhead Conductor
• Information on the newly developed Max Storm^TM Overhead Conductor
• A new section on dynamic line ratings
• A detailed outline of the Alacoa Graphic Method
• Recent test data from Southwire’s D.B Cofer Technology Center
• Details on creep correction
• Full Color Images through the manual
• Updated conductor tables, including new tables for C^7® and Max Storm^TM Overhead Conductors

Sample topics from the overhead conductor manual third edition consist of:

• An introduction to basic overhead conductor concepts, including overviews of electrical and mechanical characteristics
• Sag tension concepts and calculations
• Basic installation guidelines
• Thermal ratings of overhead conductors in steady-state and transient conditions
• Mechanical effects of high-temperature operation
• Environmental effects, including radio noise, audible noise, and electrical and magnetic fields
• Design of new transmission lines
• Voltage uprating of existing lines
• Thermal uprating of existing lines

While the manual is not a substitute for good engineering practices, it does provide engineers with a comprehensive overview of the most up-to-date-technologies and best use cases. “The intent of the manual is to serve as a companion to applicable local, state, and federal codes and design standards,” said Springer. “It should not be used a substitute as codes change by jurisdiction and may supersede recommendations in this manual.” About Southwire A leader in technology and innovation, Southwire Company, LLC is one of North America’s largest wire and cable producers. Southwire and its subsidiaries manufacture building wire and cable, metal-clad cable, portable and electronic cord products, utility products, OEM wire products and engineered products. In addition, Southwire supplies assembled products, contractor equipment and hand tools.

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