Practical Skills, Project Work and Viva
Practical tasks
Typical tasks are wiring a test board (one lamp, one fan, one socket, one MCB), staircase wiring with two-way switches, wiring and testing a DOL starter, meggering an installation, and connecting a three-phase motor in star and delta. Marks are lost for loose strands, missing ferrules, exposed copper and unsafe practice.
Project and viva
A project report should contain an aim, circuit diagram, material list with ratings, procedure, observations, results, conclusion and safety precautions. In the viva, answer precisely: define the purpose of earthing, explain why a 30 mA RCCB is used, state the difference between MCB and MCCB, and describe star-delta starting.
Worked example
Testing a newly wired DOL starter: with the supply isolated, check continuity of the control circuit through the stop button and overload contact; check insulation resistance of the motor and control wiring to earth with a 500 V megger; check that the holding contact is across the start button; then energise with the motor uncoupled and confirm direction before coupling the load.
Traps
Energising before the insulation test, leaving a megger connected when power is restored, and answering viva questions with guesses. If you do not know, say what you would check and how.