The electricity supply transmission and distribution industry 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 to undertake such tasks as substation installation and maintenance, specialised testing, and revenue meter installation. 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 always had a commitment to training and safety and is now embracing the spirit of the National Training Reform Agenda.
The main activities of the industry are installation, service, maintenance, diagnosis and repair of electrical cabling systems, apparatus and equipment in relation to overhead powerlines, underground cables and substations.
Examples of Electricity Supply Industry - Transmission Distribution and Rail Traction vocations are:
- Overhead powerline worker
- Cable jointer
