PREAMBLE

This examination syllabus emanates from the senior secondary school trade curriculum on electrical installation and maintenance work. It does not replace the curriculum. It is design to assess candidates’ skills in electrical installation and maintenance work; in terms of basic knowledge and application of electricity, fault findings in electrical installation as well as maintenance and repair electrical machines. It is also designed to test candidates’ knowledge of setting up and managing small scale business in electrical installation and maintenance work.

AIMS AND OBJECTIVES
The aims and objectives of the syllabus are to test candidates’ knowledge and understanding of:
Safety rules and regulation in electrical installation and maintenance work. 
2. Electrical installation tools, materials and accessories. 
3. Wiring of buildings. 
4. Installation of electrical machines and repairs. 
5. Rewinding of electrical machines. 
6. Entrepreneurship skill in electrical installation and maintenance. 
SCHEME OF EXAMINATION
There will be two papers, Papers 1 and 2 which will be a composite paper to be taken at one sitting.
PAPER 1: Will consist of forty multiple choice objective questions to be answered in 45 minutes for 40 marks.
PAPER 2: Will be a 2 hours 15 minutes paper covering the entire syllabus and carrying a total of 100 marks. The paper will be in two sections; Section I and II
Section I: Will consist of three essay questions out of which candidates will be required to answer two questions in 1 hour for 50 marks. Section II: Will be a test of practical work paper and will contain two questions drawn from Sections B and C of the syllabus. The paper will be answered in 1 hour 15 minutes for 50 marks.
Notes: candidates are expected to go through an apprenticeship programme for a minimum of six weeks with a reputable organization before sitting for the subject.
A log book of work done and portfolio should be kept by the mentoring organization. This will constitute part of continuous assessment for the examination.

DETAILED SYLLABUS
 CONTENT NOTES  
A.  WORKSHOP SAFETY RULES AND
REGULATIONS
 1. Hazards in electrical workshop. Causes of accidents, prevention of accidents and    precautions to be taken.   2. Dangers in electrical workshop. Dangers arising as a result of faulty equipment and    tools, chemicals, water, poor joint and insulation    strains and moving machines.   3. Precautions in handling electrical tools Care and maintenance of electrical tools.    and materials.   4. First-aid for electrical accidents. Contents of first-aid box, treatment for cuts, burns    and electrical shock. Procedures for first aid (e.g.    removing casualty from contact with live wire and    administering artificial respiration).   5. Statutory regulations. Various statutory regulations (electricity supply    regulations, factory acts and IEE regulations).    Importance, aims and objectives of statutory       3  
regulations and applications of statutory regulations.

B. ELECTRICAL INSTALLATION TOOLS, MATERIALS AND ACCESSORIES 
1. Measuring, marking and striking tools. Types and uses of measuring instruments. Types and uses of marking and striking tools.
 2. Types and preparation of cables. Types, sizes and preparation of cables. Types of    armoured cables, reasons for armouring, parts of    armoured cables, joints and terminations of    armoured cables.    Types of data cables (e.g. computer cable, fibre    optics and co-axial cable) and their uses.    Other types of cables (sheathed, screaned or H-    type, gas pressured impregnated and MICC cables)   3. Electrical accessories. Types of electrical accessories (switches, sockets,    lamp holders, ceiling roses, joint boxes, plugs etc.)    and their uses. Regulations guiding their uses.  
  4. Cells Types of cells (primary and secondary), working    Principles of cells and construction of a simple cell.   C.  WORKSHOP PRACTICE   1. Working drawing. Draw and identify electrical BS symbols (switches,    lamp holders, sockets, cooker control units etc.).   2. Generation, transmission and Drawing and interpretation of circuit diagrams of    distribution systems. generation, transmission and distribution systems.       4  
3. Surface wiring.4. Conduit wiring.5. Illumination.6. SolderingWiring drawing and scale drawing of a living roomMaterials for surface wiring (cables-1mm2, 1.5mm2, clips, nails etc.). Tools for surface wiring (hammers, screw drivers, pliers etc.). Factors affecting current rating of cables (e.g. types of conductors, ambient temperature and types of excess current protection). Wiring a point of light controlled from two independent positions.Explain conduit wiring, types (e.g. PVC, galvanized, surface and concealed), advantages and disadvantages. Identification and uses of conduit wiring. Procedures for conduit installation (piping, wiring and fitting). Types of conduit boxes and fittings (end box, angle, tee-4-way, 2-hole loop-in, junction box, knock-out box, couplers etc.). Tools for conduit wiring (bending spring, bending machine, hammer, chisel, hacksaw stove etc.). Materials for conduit wiring (union gum, conduit box, conduit pipes etc.)Concept of illumination. Factors affecting illumination. Definition of illumination, luminous flux and luminous intensity. Types of lamps. Mathematical calculation on illumination. Measurement of illumination using the photometer.Types of solders and fluxes. Operations and maintenance of blow-lamps. The use of pot and ladle in soldering cable of big sizes. Soldering of joints.7. Joints and termination of cables.8. Installation.9. Underground cable installation.10. Overhead wire installation.
Types of conducting materials (e.g. copper, aluminum and silver) and their advantages and dis-advantages. Significance of heat transfer on conductors.
Tools and materials used in cable jointing; e.g. soldering bit, blow-lamp, solder, soldering iron, propane gas, pot and ladle, insulated wire and flux. Types of insulating materials (e.g. PVC rubber, paper, mica and bakelite). Types of joints (e.g. tee, married, twist, telescope and scarf). Preparation of cable for joints and terminations.
MICC cable, preparations of MICC cable for termination. Tools and materials used in MICC installation. Advantages and disadvantages of MICC. Simple surface and industrial installation. Types of bus-bar trunking, fabrication of ducts and trunking accessories. Requirements of IEE regulations on MICC, trunking and ducting.
Types of cable for underground electrical installation work; e.g. sheathed, screened or H-type and gas pressured impregnated.
Trench preparation, laying of underground cables, tools and materials for underground cable installation. IEE regulations for underground cable installation.
Tools, cables/wires and equipment used in overhead distribution/transmission. Types of insulation used for overhead distribution/transmission.
Types and uses of stay wires.
Drawing of lines and cross-arms. Joints and Inspection and testing of domestic installation. 12. D.C machines. 13. A.C machines. 14. Installation of machines. Tools and equipment for rewinding jobs. 16. Winding drawing. terminations and electrical continuity.
Types and sequence of test; e.g. polarity, insulation resistance, earthing and continuity of ring circuit. Importance of testing and inspection. Instruments for testing; e.g. Insulator resistance Tester (megger), bell set and ohmmeter.
D.C motors and generators—types, identification, constructional features, operations and applications.
A.C motors and generators—types, identification, constructional features, operations and applications. Differences between D.C and A.C motors; D.C and A.C generators.
Types of enclosure and their applications. Selection of suitable starter for different motors; (e.g. star-delta, direct-on-line and auto transformer) and their principles of operations.
Test for correct rotation, short circuit and earth fault. Installation of AC and DC machines.
Identification of tools and equipment for rewinding jobs; (hammers screwdrivers spanners, crimpings, winding machine, mallets etc.).
Drawing and interpretation of simple wave and lap windings. Application of simple wave and lap windings. Determination of coil span per pitch, per phase, per pole. Identification of the position of coil ends on commutator/slip rings for fixed brush on a winding diagram. Rewinding of single phase electric motor. 
18. Armature, commutator and slip rings. 
D. PROTECTIVE DEVICES AND MAINTENANCE 
Installation of protective devices. 2. Maintenance of electrical equipment.Dismantling and assembling of machines. 4. Repair of electrical machines, equipment and installation. Sizes of conductors and types of insulating materials used in winding.Connection of winding coil using prepared data. Continuity and earthing test.Skimming of armature, slip rings and commutator-under-cutting. Effectiveness of commutators.
Protective devices (fuses and circuit breakers— voltage and current operated). Working principles and application of fuses and circuit breakers. Regulation guiding installation of protective devices.
Types of maintenance (preventive and corrective). Procedures for machine and equipment maintenance. Grades of lubricants and their application. Constructional features of some electrical appliances (electric heater, boiler, pressing iron etc.).
Procedures for dismantling machines. Methods of collecting data from the name plate. Assembling of machine parts.
Causes of faults and breakdown. Signs and symptoms of faults and breakdown. Interpretation of circuit diagrams. Trouble shooting techniques

  (e.g. detection of bad bearing and other parts).    Inspection and testing of machines (e.g.    performance test).   E. ENTREPRENEURSHIP IN Sources of fund and sourcing for fund for business   ELECTRICAL INSTALLATION. takeoff. Proposal writing, budgeting and    management of business outfit for small scale    business. Government rules and regulations as they    affect business registration.     
LIST OF FACILITIES AND MAJOR EQUIPMENT/MATERIALS REQUIRED:
Multi-meter Soldering iron Tester Soldering lead Plier (different types Set of screw drivers (7) Safety chart (8) Cable chart (9) Hammer (10) Megger (Insulation Resistant Tester) (11)Fishing Tape(12)Measuring tape 3m and 50m (13)Pen knife(14)Stripper(15)Hacksaw(16)Bending spring (20mm) (17)Bending machine (18)Workbench(19)Vice (20)Handrilling machine(21)Single phase electric motor