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• 1. Introduction
• 2. Risk management
• 3. Protective earthing
  • 3.1 Scope
  • 3.2 Requirements under the Electrical Safety Regulation 2002
  • 3.3 Definitions
  • 3.4 Code of Practice requirements
  • 3.5 Earthing conductors
  • 3.6 Prospective touch and step voltage
• 4. Design and installation of underground electric cable systems
  • 4.1 Scope and application
  • 4.2 Definitions
  • 4.3 Compliance with standards
  • 4.4 Selection of cables
  • 4.5 Installation
  • 4.6 Protection of cables
  • 4.7 References
• 5. Maintenance of supporting structures
  • 5.1 Scope and application
  • 5.2 Definitions
  • 5.3 Serviceability determination
  • 5.4 Marking of poles
  • 5.5 References

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3.1 Scope

This section sets down the principles for the protective earthing of electrical equipment that forms part of the works of an electricity entity. The principles reflect established design principles used in the electricity supply industry.

Fundamental performance criteria are provided for ensuring permanent protective earthing systems are operated correctly. This is to ensure the correct operation of electrical protection systems so that exposed conductive parts of electrical equipment do not become energised to a potentially dangerous level.

Last updated June 7, 2005

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