Connections Procedures

Introduction

The following principles apply to testing and connection work within the scope of these procedures. Connection work shall be undertaken in accordance with individual connection procedures to ensure the application of these principles.

Objective:

To ensure the safe connection of electrical installations to the Victorian Electricity Supply Network by:

  • Providing correct polarity of electrical connections to the customer’s main switchboard.
  • Providing a supply neutral of less than 1 Ω impedance to the customer’s main switchboard.
  • Providing correct phase sequence to the customer’s main switchboard.
  • Maintaining safe systems of work during the connection process.

Principles

  1. All conductive components and associated work area assumed to be de-energised shall be proven de-energised by test, prior to the commencement of work.
  2. Installation Under Test notice/s shall be placed at any point of which live apparatus is exposed to, or accessible by, other parties not involved in the connection process e.g. electricians, general public.
  3. All neutral conductors/connections shall be readily identifiable by colour, or termination position and tagged where required.
  4. A Neutral Integrity Test Point (NITP) shall be established on the electrical installation to validate Check Testing and Neutral & Supply Testing Procedures.
  5. Polarity Testing shall be conducted on the Supply/Service conductors where the supply neutral conductor has been connected or disconnected and reconnected.
  6. Supply Testing shall be conducted on the Supply/Service conductors where the service neutral conductor has been connected or disconnected and reconnected.
  7. Check Testing shall be conducted:
    • To ensure correct polarity of neutral connections to the main switchboard.
    • With switching circuits energised to ensure correct polarity of neutral connections on any occasion where the connection work has involved the installation of new metering equipment or alterations or additions to existing metering equipment.
  8. A final Neutral and Supply Test shall be conducted to an established NITP.
  9. Phase sequence shall be established:
    • On new installations to be correct to the metering equipment: and
    • On existing installations in a manner to ensure the correct operation of 3 phase equipment
  10. Installation or changes to Metering equipment to be checked for correct functionality.

Download Section 4 - Connection Procedures