Unit 6 Electrical Installation Trade Practice I Notes and Past Papers

Electrical Installation

Topics – Unit Outline

Safety and Work Habits

  • Protective wearing safe working habits
  • Dangers of electricity
  • Electric Shock
  • First Aid to shock
  • Victim care and maintenance of tools

Cable Joints and Terminations

  • Construction of cables
  • Cable sizes
  • Types of cables
  • PVC insulated cables
  • VRI cables
  • Flexible cables and cords

Final Lighting Sub-Circuits

  • Simple lighting circuit looping in method
  • Two way switching intermediate switching

Wiring system

  • All insulated wiring
  • Catenary supported
  • Wiring plastic conduit

Earthing and Protective Devices

  • Earthing requirements
  • Earthing methods
  • Fuses
  • Circuit breakers (MCB)

Testing and Inspection

  • Verification of polarity
  • Insulation tests
  • Earthing tests

Bell Circuits

  • Simple Bell circuits
  • Bell and indicator

 

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