Changes from 2015 Version (Issue 4) to 2021 Version (Issue 5)
Document completely reviewed and emphasis has been given to offering options to protect from voltage differences, including requirements for protection of step and step touch potential risks.
The safety rules (Safety Manual – Electricity Industry (SM-EI)) for the New Zealand Electricity, Generation, Transmission and Distribution Industry set down the safety rules to be followed when isolating, testing and earthing electrical conductors or apparatus in general, and overhead lines in particular. This Guide to Work on De-Energised Distribution Overhead Lines (this Guide) provides information additional to the safety rules to assist electricity industry lines employees in achieving the requirements of the safety rules for a range of situations and associated aspects that may be encountered on distribution overhead lines.
This Guide applies to both LV and HV overhead distribution lines. It covers good practice industry methods of earthing together with the protection from voltage differences in both ground level and overhead work situations.