who perform and supervise operations and maintenance work. The manual is divided into four chapters.Chapter one covers definitions and general safety practices. Chapter two deals with switching, tagging, testing of circuits and equipment, while chapter three covers overhead lines, switchyards and substations. This manual is intended primarily for use by construction and maintenance personnel and details the Ergon Energy standard constructions. The manual was compiled initially with input from representatives from each of the six regions of Ergon Energy. During the construction and renewal of overhead line systems it is in the interest of a long useful life and low life cycle costs (LCC) to pay particular attention to the material. Stresses and tension fluctuations can reduce the service life, too great a contact wire ripple and position deviations can affect the interplay with the pantograph Major storms increase stresses on overhead infrastructure, and damage to the overhead distribution system can overwhelm a utility s normal response and repair, leading to customer interruptions lasting days. Hardening of overhead infrastructure or resiliency improvements to reduce damage and reduce times to repair can reduce customer impacts. to ensure high reliability and availability of the overhead lines for bulk electricity transmission, cost effective maintenance strategies including the application of specific accessories and materials, such as lightning arrestor and high voltage insulation coating (hvic) as well as tower refurbishment to mitigate the risks caused by lightning, … TRANSMISSION LINE REPAIR MANUAL A guidebook for the inspection and repair of damaged or worn conductors. PREFACE Since 1947 Preformed Line Products has been a recognied leader in the business of safeguarding transmission line conductors. Man of the innovative ideas and solutions Overhead Shield Wire Repair Rods 15 84.8-D1 Minimum Radial Clearance Between Communications Service Drops and Line Conductors 16 86.8-C Guy Insulator Flashover Voltages 17 App. B Copper Wire - Bare, Solid - Characteristics and Loading to this Order, applicable to all operators of overhead lines. Decision or Resolution No. Date Effective Rules Herein Revised, Deleted or Highway Maintenance Manual . Bureau of Highway Maintenance . Chapter 09 Right -of-Way Use & Permits July 2017 Overhead Line . 17' at all times, or for high clearance routes, at no time be less than the summation of 20 feet plus the closest approach distance in Appendix line terminal guard and a ground terminal ground. Customers have the option of a line terminal wildlife guard, that is easily retrofitted to existing arrester installations and provides increased electrical insulation for the high voltage terminal of the arrester. The flexible design allows for insertion of the lead wire through the bottom of The two main technical aspects related to the structural design of overhead distribution lines are ensuring that: • the mechanical load forces do not exceed the strength of the structures or other components; NS220 Overhead Design Manual Amendment No 3 NW000-S0092 UNCONTROLLED IF PRINTED Page 9 of 101 Unclassified 12. A maximum of three (3) service riser conduits may be supplied from one overhead service drop. Multiple risers shall be placed a maximum of 12" apart and be braced together within 6" to 12" of the weatherhead per Paragraph 401.6-1, Detail A. 13. No foreign attachments shall be permitte