Working on De-energized Transmission Lines

De-Energizing Isolating and Tagging Describe the general procedures for de-energizing isolating and tagging a transmission line. Induced Charges Describe how a de-energized line can become energized by magnetic induction. Describe how a de-energized line can become energized by electric induction. Static Charges and Ground Systems Describe how a de-energized line can become energized by static electricity. Describe three transmission grounding systems. Describe how grounding minimizes the dangers of induced and static charges. Describe how charges may continue to be present on a line at locations other than the point of grounding. Field Clearance and Testing Describe the general procedures for obtaining a clearance on a transmission line. Describe how to test a transmission line to determine that it is de-energized. Grounding Explain why it is necessary to ground a de-energized transmission line. Describe how to safely ground a transmission line. Returning a Line to Normal Describe how to safely remove grounds from a transmission line. Describe the general procedure for releasing a clearance. Describe the general procedure for switching a line back into service.