This is an accordion element with a series of buttons that open and close related content panels.
Course Outline
Introduction to Overhead Distribution Lines
- Conductors, structures, equipment
- Voltage, current, and power ratings
- Electrical loading (normal and contingency)
- National codes and standards
- Rights-of-way and joint-use
Introduction to the National Electrical Safety Code® (NESC)
- NESC purposes, compliance, organization, and content
- NESC general requirements for overhead lines
Conductors
- Physical and electrical characteristics
- Transverse, vertical, and tension loads
- Sag and tension characteristics
- Sag calculations with the ruling span
NESC Clearances
- Between structures
- Conductors to ground, other conductors, buildings
- Climbing and working spaces
Structure Loading
- Determination of conductor weight span and wind span
- Forces, moments and loading trees
- NESC grades of construction
- Structural loading and strength factors
Guying
- Guying methods and requirements
- Guy strand types, sizes and selection
- Anchor types, sizes and selection
- Pole attachments and insulation
Structure Types and Design
- Wood, steel, concrete poles
- Structures and support arms
- Selection of structures and structural components
Insulators and Insulation Coordination
- Lightning characteristics and BIL ratings
- Electrical, mechanical ratings of insulators
- Lightning arresters and application
Grounding
- Purposes of grounding
- NESC requirements
- Grounding standards