Electrical Trade Test Preparation

Electricians are responsible for the inspection and maintenance of all types of electrical equipment on machinery, in beneficiation plants and buildings, including offices, hostels, houses, etc.

They are also responsible for the distribution of electricity, which includes the laying of cable networks and connection of transformers.

The following modules are done during training:

Basic Training

• Theory:
  Magnetism
  Units and prefixes
  Ohm- and Kirchoff’s laws

• Instruments:
  Use of electrical measuring instruments
  Testing of cables
  Determining of the layout of resistance circuits

• Buildings:
  Lights and lighting circuits
  Stove switching
  Thermostatic controls
  Construct and wire installations
  Testing of single-phase installations

• Single-phase motors:
  Single-phase motor theory
  Testing of single-phase motors
  Connecting a single-phase motor
  Forward-reverse controlled through a rotary switch and contactors

• Three-phase motors:
  Three-phase motor theory
  Testing of three-phase motors
  Phasing of induction motors
  Direct-on-line starters
  Forward-reverse starters
  Sequence starters
  Overhaul a three-phase motor

• Transformers:
  Transformer theory
  Star and Delta connections
  Connecting transformers for various applications

• Relays:
  Reading of electric circuits
  Determining of the operation of a circuit from a circuit diagram
  Use of retaining circuits
  Use of electrical- and mechanical interlocking circuits

• Hand Tools:
  Reading of engineering drawings
  Use of measuring instruments and marking off of materials
  Using a drilling machine, grinder, welding machine and oxy-acetylene equipment