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All Systems Operational

Electrical Installation syllabus for WAEC WASSCE | Learn | Learn by Rightal

WAEC WASSCE course

Electrical Installation

WAEC WASSCE

40 topics sit in this course for WAEC WASSCE.

Practice Electrical Installation All subjects

Learn/WAEC WASSCE/Syllabus/Electrical Installation

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Topics with a public outline

Hazards in electrical workshop
Covers causes of accidents, prevention of accidents and precautions to be taken.
WORKSHOP SAFETY RULES AND REGULATIONS
This module covers essential safety practices and regulations in electrical workshops to ensure a safe working environment.
Measuring, marking and striking tools
Types and uses of measuring instruments. Types and uses of marking and striking tools.
Working drawing
Draw and identify electrical BS symbols (switches, lamp holders, sockets, cooker control units etc.).
Installation of protective devices
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.

course outline

WORKSHOP SAFETY RULES AND REGULATIONS
- Hazards in electrical workshop
- Dangers in electrical workshop
- Precautions in handling electrical tools and materials
- First-aid for electrical accidents
- Statutory regulations
ELECTRICAL INSTALLATION TOOLS, MATERIALS AND ACCESSORIES

Generation, transmission and distribution systems

Drawing and interpretation of circuit diagrams of generation, transmission and distribution systems. Wiring drawing and scale drawing of a living room.

Maintenance of electrical equipment

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.).

Dangers in electrical workshop

Dangers arising as a result of faulty equipment and tools, chemicals, water, poor joint and insulation strains and moving machines.

Types and preparation of cables

Includes 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).

ELECTRICAL INSTALLATION TOOLS, MATERIALS AND ACCESSORIES

This module introduces various tools, materials, and accessories essential for electrical installation work.

Surface wiring

Materials 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.

Electrical accessories

Types of electrical accessories (switches, sockets, lamp holders, ceiling roses, joint boxes, plugs etc.) and their uses. Regulations guiding their uses.

Dismantling and assembling of machines

Procedures for dismantling machines. Methods of collecting data from the name plate. Assembling of machine parts.

WORKSHOP PRACTICE

This extensive module covers practical aspects of electrical installation, from drawing and wiring to machine installation and testing.

Repair of electrical machines, equipment and installation

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).

PROTECTIVE DEVICES AND MAINTENANCE

This module covers the installation of protective devices and various aspects of electrical equipment maintenance.

First-aid for electrical accidents

Covers contents of first-aid box, treatment for cuts, burns and electrical shock, and procedures for first aid (e.g. removing casualty from contact with live wire and administering artificial respiration).

Cells

Covers types of cells (primary and secondary), working principles of cells and construction of a simple cell.

Conduit wiring

Explanation of 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.).

ENTREPRENEURSHIP IN ELECTRICAL INSTALLATION

This module provides essential knowledge for setting up and managing a small scale business in electrical installation.

Statutory regulations

Focuses on various statutory regulations (electricity supply regulations, factory acts and IEE regulations), their importance, aims, objectives, and applications.

Illumination

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.

Soldering

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. Types of conducting materials (e.g. copper, aluminum and silver) and their advantages and disadvantages. Significance of heat transfer on conductors.

Joints and termination of cables

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.

Installation - MICC cable, trunking and ducting

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.

Underground cable installation

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.

Overhead wire 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 terminations and electrical continuity.

Inspection and testing of domestic installation

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 machines

D.C motors and generators—types, identification, constructional features, operations and applications.

A.C machines

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.

Installation of machines

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.

Tools and equipment for rewinding jobs

Identification of tools and equipment for rewinding jobs; (hammers screwdrivers spanners, crimpings, winding machine, mallets etc.).

Winding drawing

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

Sizes of conductors and types of insulating materials used in winding. Connection of winding coil using prepared data. Continuity and earthing test.

Armature, commutator and slip rings

Skimming of armature, slip rings and commutator-under-cutting. Effectiveness of commutators.

WORKSHOP PRACTICE

Working drawing
Generation, transmission and distribution systems
Surface wiring
Conduit wiring
Illumination
Soldering
Joints and termination of cables
Installation - MICC cable, trunking and ducting
Underground cable installation
Overhead wire installation
Inspection and testing of domestic installation
D.C machines
A.C machines
Installation of machines
Tools and equipment for rewinding jobs
Winding drawing
Rewinding of single phase electric motor
Armature, commutator and slip rings

PROTECTIVE DEVICES AND MAINTENANCE

Installation of protective devices
Maintenance of electrical equipment
Dismantling and assembling of machines
Repair of electrical machines, equipment and installation

ENTREPRENEURSHIP IN ELECTRICAL INSTALLATION

Sources of fund and sourcing for fund for business takeoff
Proposal writing
Budgeting and management of business outfit for small scale business
Government rules and regulations as they affect business registration