  
3. Refresher course content
The refresher course covers the following subjects:
- testing for safety, and
- the requirements relating to the supervision of trainees both from a supervisor and trainee perspective, and
- earthing requirements, and
- the installation, operation and operational testing of residual current devices, and
- prospective short circuit current levels, and
- hazard identification, and
- testing, certification, and inspection and
- an appreciation of the types of accidents that have been reported within the previous twelve months, and
- safe working practices, and
- issues highlighted by the Board in ELECTRON newsletter.
  
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