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The Electricity Supply Industry - Transmission, Distribution, and Rail (ESI-TDR) conveys electricity from the generating power stations to the consumer by means of a reticulation system that includes the following component sections:
- The distribution of electricity by means of overhead conductors and poles. This is usually reticulation in built up areas in both industrial/commercial and residential settings or rural settings,
- The distribution of electricity by means of underground cables where installation and cable jointing are specific skills. This is usually reticulation in built up areas in both industrial/commercial and residential settings,
- The distribution of electricity by means of overhead conductors suspended from towers (or larger concrete or wooden poles) at voltages substantially higher than those used for distribution,
- The transmission of electricity by means of underground cables which are usually oil or gas filled requiring special skills in installation and maintenance.
In addition to mainstream linework and cable jointing functions, powerline workers are being called on, in some areas, to undertake such tasks as substation installation and maintenance, specialised testing, revenue meter installation and the like. Some electrical distributors are multi-skilling their powerline personnel with additional mainstream electrical skills, such as those held by electricians.
The industry has undergone rapid changes in work methods, staffing levels, management approaches and the sub-contracting of many work functions to external contractors. The industry has a very strong commitment to training and safety.
The main activities of the industry are installation, service, maintenance, diagnosis and repair of electrical cabling systems, apparatus and equipment in relation to:
- Overhead lines (distribution)
- Overhead lines (transmission)
- Overhead traction wiring systems (rail)
- Cable jointing
- Equipment installation
Examples of Electricity Supply Industry - Transmission Distribution and Rail Sector vocations are:
- Overhead powerline worker (distribution)
- Overhead powerline worker (transmission)
- Cable jointer
- Rail traction
There are four Apprenticeships that provide individuals with the chance to enter an exciting career in the Transmission, Distribution and Rail/Tram sector of the Electricity Supply Industry. These programs result in the apprentice gaining a nationally recognised Certificate III qualification in the Electrical Supply Industry.
Transmission
Work in the area of electricity transmission involves maintaining towers and associated hardware as well as stringing and maintaining overhead conductors and cables. Apprentices in this program will be exposed to a range of experiences, designed to give them the expertise required for a career in this sector.
The distribution of electricity throughout Australia involves the installation and maintenance of underground cables, overhead conductors, associated hardware and public lighting. This program enables trainees to acquire the skills and knowledge needed for a career in power line distribution.
Rail Traction
The distribution of electricity used for transporting of people and goods by various types of rail traction vehicles (e.g. tram and train) involves the carrying out of construction, maintenance and inspection of overhead traction wiring systems and equipment in accordance with legislative rules and regulations.
Cable Jointing
Work in the area of cable jointing involves the laying, installation, jointing and maintenance of de-energised LV and HV underground polymeric cables and the installation and maintenance of electrical equipment. Options are available for skills to be obtained for energised cables and or Low and High Voltage paper insulted cables.
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