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Electrical Science - Part 2: a.c. theory; Power In An A.C. Circuit; Transformers Instruments & Measurement; Earthing & Protection: Overcurrent Protection; Cable Selection; Lighting: GLS lighting; Discharge lighting; Circuits & Systems: Timers & Programmers; Emergency Lighting, Fire Alarms & Standby Power Supplies; Timers & Programmers; Cooker Thermostats & Controllers; Water & Space Heating; Intruder Alarms & CCTV; Inspection, Testing & Commissioning: General requirements; Initial verification, certification and commissioning; The sequence of initial tests; Certificates; Initial inspection; Periodic inspection and testing; Fault Diagnosis & Rectification: Safe working practices for fault diagnosis; General categories of fault; Specific types of fault; Knowledge and understanding of electrical systems and equipment; Stages of diagnosis and rectification; Factors affecting the fault repair process; Special situations; Motors & Control: Motors & Motor Components; a.c. and d.c. motors; Motors & Motor Components; Speed slip calculations; Motor windings; Starters; Speed control; Electronics: Resistors; Capacitors; Semiconductor devices; Rectification; Transistors; Integrated Circuits (ICs); Thyristors; Field Effect Transistors (FETs).