Elements and Performance Criteria
- Prepare to disconnect electrical equipment.
- Disconnection is planned to ensure OHS policies and procedures are followed.
- Appropriate persons are consulted to ensure work is coordinated effectively with others involved in the work site.
- Safety hazards which have not previously been electrical characteristics of electrical equipment and electrical supply are determined and recorded in accordance with established procedures.
- The point of isolation of electrical equipment to be disconnected is determined.
- Tools, equipment and testing devices needed to carry out the work are obtained in accordance with established procedures and checked for correct operation and safety.
- Disconnect electrical equipment.
- OHS policies and procedures are followed.
- Electrical equipment is isolated in accordance with AS/NZS 4836:2001 and established procedures (see Range Statement).
- Conductor connection sequence is recorded and labelled in accordance with established procedures.
- Visual checks of the electrical equipment and associated wiring are carried out in accordance with established procedures to detect any abnormal or obvious damage or fault.
- Isolated equipment is confirmed as de-energised.
- Electrical equipment is disconnected from fixed wiring without damage to other components.
- Approval is obtained in accordance with established procedures from appropriate personnel, before any contingencies are implemented.
- Disconnected conductors/cables are terminated in accordance with requirements to ensure they are safe and present no potential hazard.
- Prepare to reconnect electrical equipment.
- Reconnection is planned to ensure OHS policies and procedures are followed.
- Appropriate personnel are consulted to ensure work is coordinated effectively with others involved in the work site.
- The point of isolation of the circuit to which the electrical equipment is to be connected is determined.
- Replacement electrical equipment is selected on the basis of rating and characteristics being the same as that of the original electrical equipment.
- Appropriate personnel are consulted in the event that replacement electrical equipment is not available.
- Original and/or replacement electrical equipment is tested to ensure it is safe to connect to the electrical supply and use.
- Tools, equipment and testing devices needed to carry out the work are obtained in accordance with established procedures and checked for correct operation and safety.
- Reconnect electrical equipment.
- OHS policies and procedures are followed.
- Measures are taken to ensure circuit to which electrical equipment is to be connected remains isolated and de-energised in accordance with AS/NZS 4836:2001.
- The continuity of the protective earthing conductor is tested to determine whether it is sufficiently low.
- The resistance between the protective earthing conductor and the neutral conductor is tested to determine whether it is sufficiently low, i.e. not greater than 2 Ohms.
- The insulation resistance of active conductors is tested to confirm that it is greater than 1 Megohm.
- An appropriate qualified person is engaged to rectify any non-compliance condition revealed by the testing under item 4.3 to 4.5.
- Continuity between exposed conductive parts of the equipment and the main earth or metal switchboard enclosure is confirmed.
- Electrical equipment is connected to comply with requirements.
- Connections to the equipment are checked to confirm they are correct.
- Test the reconnected electrical equipment for safe operation.
- OHS policies and procedures, and established procedures for the reinstatement of isolated circuits and electrical equipment are followed.
- Arrangements are made with appropriate personnel to test the operation of the electrical equipment in accordance with established procedures.
- Operational non-conformances are identified and reported in accordance with established procedures.
- Identify and report faults
- Electrical equipment is isolated in accordance with established procedures.
- Other OHS policies and procedures are followed.
- Visual checks of the equipment to be disconnected and/or reconnected are carried out in accordance with established procedures to detect any abnormal or obvious damage or fault.
- Fault(s) at point of disconnection and/or reconnection are identified and reported in accordance with established procedures.
- Approval is obtained in accordance with established procedures from appropriate personnel, before any contingencies are implemented.
- Provide status report(s).