REPORT 191 PROGRAMMES SYLLABUS
Syllabus: Electrical Trade Theory N2 (May 2021)REPORT 191 PROGRAMMESSYLLABUSElectrical Trade TheoryN2Implementation: May 20211
Syllabus: Electrical Trade Theory N2 (May 2021)1. INTRODUCTION1.1 General AimsThis subject provides an introduction to the basics of Electrical Trade Theory and introduces thelearning at an elementary level. It is assumed that students have no previous electrical background andknowledge. Students learn how to plan and prepare for an electrical installation job in accordance withjob requirements, relevant standards and appropriate workplace procedures to enable them tounderstand electrical installation and maintenance.Electrical Trade Theory N2 will equip students with relevant theoretical knowledge to enable them tointegrate meaningfully into: electrical apprenticeship; electrical learnership; electrical contracting environment; industrial environment; and power utility environment1.2 Specific AimsElectrical Trade Theory strives to assist students to obtain trade-specific skills, knowledge, values andattitudes so that they can explain how electricity is applied. Students should be able to acquire in-depthknowledge of the following content:1.2.1 Safety precautions1.2.2 Fire and fire fighting1.2.3 Hand and power tools1.2.4 Direct current theory1.2.5 Conductors and insulating materials1.2.6 Wiring of premises1.2.7 Testing of a single phase1.2.8 Magnetism and electromagnetism1.2.9 Renewable energies2. Admission requirementPassed grade 9 or equivalent3. DurationThe duration of the subject is one trimester on full time, part time or distance learning mode.2
Syllabus: Electrical Trade Theory N2 (May 2021)4. EvaluationCandidates must be evaluated continually as follows:4.1 ICASS Trimester Mark4.1.1 Two formal class tests for full time and part time students (or Two assignments fordistance learning students only)4.1.2 Obtain a minimum of 40% in order to qualify to write the final examination.4.1.3 Assessment marks are valid for a period of one year and are referred to as ICASSTrimester marks.4.1.4 Calculation of trimester markWeight of test or assignment 1 30% of the syllabusWeight of test or assignment 2 70% of the syllabus4.2 Examination4.2.1 The examination shall consist of 100 % of the syllabus4.2.2 Duration shall be 3 hours4.2.3 Minimum pass percentage shall be 40%4.2.4 Closed book examination4.2.5 Knowledge, understanding, application and evaluation are important aspects of the subject andshould be weighted as n60%20%15%5%4.3 Promotion MarkThe promotion mark consisting of the combination of the Trimester and Examination marks,shall be a minimum of 40%3
Syllabus: Electrical Trade Theory N2 (May 2021)4.4 Weight value of modulesModuleDescriptionWeight Value (%)1.Safety precautions102.Fire and Fire fighting53.Hand and power tools54.Direct Current theory305.Conductors and insulating materials56.Wiring of premises257.Testing of a single phase58.Magnetism and electromagnetism109.Renewable energies5TOTAL100%5. General Information5.1 The regulations as prescribed in the SANS 10142-1 as amended, must be used in conjunction witheach relevant section of work. All symbols and measurements must be in accordance with InternationalElectrical Committee (IEC) and System International of Unites (SI) standards5.2 Practical examples and values must be used in all calculations.5.3 Neat, fully labelled and large drawings must be presented where such is required.5.4 Students should be encouraged to provide in their answers the number of facts according to thenumber of marks allocated5.4 All calculations should in engineering notation are restricted to a maximum of three decimal places.4
Syllabus: Electrical Trade Theory N2 (May 2021)1.Subject aims1.1 General aimsTo equip learners with relevant theoretical knowledge to enable the learners to integratemeaningfully into:1.1.1 an electrical apprenticeship1.1.2 an electrical learnership1.1.3 an electrical contracting environment1.1.4 a power utility environment1.2Specific aimsLearners should acquire in-depth knowledge of the following subject outcomes:1.2.1 Alternating current circuit theory1.2.2 Conductors, insulators and cables1.2.3 Electrical reticulation1.2.4 Switchgear and protective devices1.2.5 Batteries1.2.6 Direct current machines1.2.7 Alternating current machines1.2.8 Transformers1.2.9 Earthing1.2.10 Measuring instruments1.2.11 Renewable energy2.PrerequisiteLearners must satisfy the following requirements:2.1 Passed N13.DurationThe duration of this instructional offering is one trimester full-time, part-time or distance learningmode.4.Evaluation4.1 Trimester mark5
Syllabus: Electrical Trade Theory N2 (May 2021)Learners will write TWO formal class tests and must obtain a minimum trimester mark of 40%in order to qualify to write the final examination. The trimester mark shall be calculated asfollows:Trimester mark 30% of Test 1 70% of Test 24.2 Examination markThe examination for this instructional offering will be conducted at the end of each trimesterand as follows:Modules 1 100 marksDuration Three hoursMinimum pass mark 40%Closed book examinationScientific (non-programmable) calculators are allowedA formula sheet is to accompany the question paper4.3 Promotion markThe promotion mark shall be calculated as follows:Promotion mark 40% of Trimester mark 60% of Examination mark5. AssessmentRecall, understanding, application and evaluation are important criteria necessary to assessthe learner’s knowledge and understanding of the subject outcomes and shall be weighted asfollows during any n55%15%20%10%6
Syllabus: Electrical Trade Theory N2 (May 2021)6. Mark allocation and weight valueModuleCalculation typequestionTheory and drawingtype questionWeight 7. General information7.1The regulations as prescribed in the South African National Standard (SANS10142-1) as amended, must be used with each relevant section of thiscurriculum.7.2All symbols and units of measurement must be in accordance with the following:7.2.1 IEC (International Electro-technical Commission)7.2.2 SI (International System of units)7.3Practical examples, realistic values and current data must be used in allcalculations and explanations.7.4 Neat, fully labelled and large drawings must be presented when such is required.The learner’s artistic ability is not to be evaluated.7
Syllabus: Electrical Trade Theory N2 (May 2021)7.5 Learners should be encouraged to provide in their answers the number of factsaccording to the number of marks allocated.7.6 For calculation type questions the following must be done:7.6.1 State the formula used7.6.2 Show the substitution7.6.3 Round off all answers correct to three decimal places7.6.4 Show the SI unit8
Syllabus: Electrical Trade Theory N2 (May 2021)Module 1: Alternating current circuit theoryGeneral aimUpon completion of this module, learners should be able to demonstrate understanding ofdynamically and statically induced emfs, the power triangle and star and delta connections in athree-phase systemLEARNING OUTCOMESLEARNING CONTENT1.1 Dynamically induced emfThe learner must be able to:1.1.1 Calculate the magnitude of an emfinduced in a rotating conductor1.1.2 Calculate the magnitude of instantaneouscurrents and emfs1.1.3 Define the following terms: Instantaneous value Average value RMS value Form factor Maximum value1.1.4 Calculate the form factor of a sinusoidalwave1.2 Statically induced emf1.2.1 Explain how emfs can be staticallyinduced (self and mutually induced)1.3 The power triangle1.3.1 Calculate the three powers in singlephase and three-phase circuits1.3.2 Define power factor1.3.3 Calculate power factor1.4 Three-phase circuits1.4.1 Draw circuit diagrams to illustrate starand delta connections1.4.2 State the relationship between phase andline values in a star and delta connectedsystem9
Syllabus: Electrical Trade Theory N2 (May 2021)Module 2: Conductors, insulators and cablesGeneral aimUpon completion of this module, learners should be able to demonstrate understanding ofconductors and their properties, insulators and their properties, cables and their properties,conductor and cable joints, methods of installing cables and the factors to be considered whenselecting a cable for a particular application.LEARNING OUTCOMES.LEARNING CONTENT2.1 Conductors2.2 Insulators2.3 CablesThe learner must be able to:2.1.1State the purpose of a conductor2.1.2State the properties and uses of thefollowing conductors: Gold Silver Copper Aluminium carbon2.1.3State the methods used to joinconductors2.1.4State the requirements of a goodconductor jointState the function of an insulator2.2.12.2.2State the properties and uses of thefollowing insulators: PVC XLPE Glass Ceramic Asbestos Porcelain Mica Bakelite Silicone Magnesium oxide2.3.1Define the following: Cable Flexible cable Flexible cord2.3.2Draw and label the following: A PVC-insulated, wire-armouredcable10
Syllabus: Electrical Trade Theory N2 (May 2021) 2.3.32.3.4PILCSWA cablePILCSTA cableXLPE-insulated cableState the functions of each part of aPVC-insulated, wire-armoured cableState the advantages and disadvantagesof the following cables: PVC-insulated Paper-insulated XLPE-insulated2.3.5State the requirements of a good cablejoint2.3.6State the basic steps that must befollowed when making a cable joint2.3.7Identify low voltage and high voltagecable jointsExplain how a simple low-voltage resinjoint is made2.3.82.3.9State the factors to be considered whenselecting a cable for a particularapplication.2.3.10 State the methods used to install cablesand state also the advantages anddisadvantages of each method.Module 3: Electrical reticulationGeneral aimUpon completion of this module, learners should be able to demonstrate understanding of atypical reticulation system which comprises of generation, transmission, distribution andutilisation, why transmission lines have no neutral conductors, advantages and disadvantagesof the various distribution systems.LEARNING OUTCOMESLEARNING CONTENT3.1 Reticulation networksThe learner must be able to:3.1.1 State what is an electrical reticulationnetwork3.1.2 Name the sections that make up anelectrical reticulation network3.1.3 Draw a typical electrical reticulationnetwork and state the typical voltage at11
Syllabus: Electrical Trade Theory N2 (May 2021)each stage3.2 Generation3.3 Transmission3.1.4 State the functions of the step up andstep down transformers3.2.1 Name the different types of powerstations found in our Country3.2.2 State why power stations are situated faraway from major load centres3.3.1 State the advantages and disadvantagesof high voltage transmission3.3.2 State why there is no neutral conductor ina high voltage transmission line3.4 Distribution3.4.1 Name the different types of supplysystems3.4.2 State the advantages and disadvantagesof the various supply systems3.4.3 Draw simple diagrams to illustrate radialand ring feedersModule 4: Switchgear and Protective devicesGeneral aimUpon completion of this module, learners should be able to demonstrate understanding of thedifferent types of switchgear, the various types of faults that could occur in electrical systems,the protective devices used to protect against the harmful effects of these faults, how theseprotective devices operate.LEARNING OUTCOMESLEARNING CONTENT4.1 SwitchgearThe learner must be able to:4.1.1 State the purpose of electrical switchgear4.1.2 Name the switchgear used for thefollowing functions: Isolating Control Protection4.2 Switchgear- Isolating4.3 Switchgear-control4.2.1 Explain the difference between adisconnector and a switch disconnector4.3.1 Explain the operation and application ofthe following: Relays12
Syllabus: Electrical Trade Theory N2 (May 2021) 4.4 Protective devicesContactorsTimersDay-night switch4.4.1 State the protective device used toprotect against the harmful effects of thefollowing faults: Short-circuits Overloads and over-currents Earth leakage current High voltage surges Lightning discharges Transient faults in overhead lines Phase imbalance4.4.2 With the aid of fully labelled diagramsexplain the operation of the protectivedevices used to protect against the faultsmentioned in 4.4.1 above.Module 5: BatteriesGeneral aimOn completion of this module, learners should be able to demonstrate understanding of thedifferent types of batteries and their uses; construction, operation, care and maintenance ofgel, lead acid and lithium-ion batteries.LEARNING OUTCOMESLEARNING CONTENT5.1 Gel batteriesThe learner must be able to:5.1.1 Explain the construction of a gel battery5.1.2 State the application of gel batteries5.1.3 Explain how a gel battery is charged5.1.4 Describe the care and maintenance ofgel batteries5.2 Lead-acid battery5.2.1 Describe the construction of a lead-acidbattery5.2.2 Explain the operation of a lead-acidbattery5.2.3 Describe the care and maintenance oflead-acid batteries13
Syllabus: Electrical Trade Theory N2 (May 2021)5.2.4 State the advantages and disadvantagesof lead-acid batteries5.2.5 Explain the term relative density andstate how it is measured6.2.6 State the factors that influence thecapacity of lead-acid batteries6.2.7 Explain the following: Open-circuit voltage test Load test6.3 Lithium-ion batteries6.3.1 Describe the construction of a lithium-ionbattery6.3.2 Describe the operation of a lithium-ionbattery6.3.3 State the advantages and disadvantagesof a lithium-ion battery6.3.4 Describe the care and maintenance oflithium-ion batteriesModule 6: Direct current machinesGeneral aimOn completion of this module, learners should be able to demonstrate understanding of theconstruction of DC machines, the operation of motors and generators, circuit diagrams of thedifferent types of self-excited machines.LEARNING OUTCOMESLEARNING CONTENT6.1 Function and constructionThe learner must be able to:6.1.1 State the functions of motors andgenerators in terms of energy conversion6.1.2 Draw a cross-section of a simple two-poleDC machine and show the followinglabels: yoke, terminal box, field poles,pole shoes, field windings, interpoles,compensating windings, air-gap andarmature6.1.3 Make a simple sketch of the armatureassembly and clearly show the following:shaft, bearings, cooling fan, armaturecore and commutator6.1.4 Make a simple sketch of a brush-gearand clearly show the following: brush14
Syllabus: Electrical Trade Theory N2 (May 2021)holder, brush and spring6.2 Operation of DC motors6.2.1 Explain with the aid of suitable diagrams,the operation of a DC motor6.2.2 Explain armature reaction6.2.3 Draw fully labelled circuit diagrams of ashunt, series and compound motor6.2.4 Explain the concept ‘back emf’ and alsostate how it makes a motor self-regulating6.2.5 State the function of a face-plate starter6.2.6 Explain with the aid of a suitable diagramhow a face-plate starter is used to startthe following motors Series motor Shunt motor6.2.7 Show by means of fully labelled circuitdiagrams how the direction of rotation ofthe following DC motors can be changed: Series motor Shunt motor Long-shunt motor Short-shunt motor6.3 Operation of DC generators 6.3.1 Explain with the aid of diagrams theoperation of a DC generator6.3.2 Explain with the aid of simple sketches,the concept commutation6.3.3 State how sparking between thecommutator and brush can be reduced orhow commutation can be improved6.3.4 Explain with the aid of circuit diagramsthe difference between separately andself-excited generators6.3.5 Draw fully labelled circuit diagrams of ashunt, series and compound generator15
Syllabus: Electrical Trade Theory N2 (May 2021)Module 7: Alternating current machinesGeneral aimOn completion of this module, learners should be able to demonstrate understanding of theoperation of the different types of single-phase motors and three-phase induction motors, howthe direction of rotation of these motors is achieved and how these motors are tested.LEARNING OUTCOMESLEARNING CONTENTThe learner must be able to:7.1 Types of AC machines7.1.1 Name the two major categories of ACmachines7.2 Single-phase motors7.2.1 State the different types of single-phasemotors7.2.2 With the aid of suitable diagrams, explainthe construction and operation of thefollowing motors: Split phase motors Capacitor-start induction-runmotors Capacitor-start capacitor-run motor Shaded pole motors Universal motors7.2.3 State the applications of these motors7.2.4 State how the direction of rotation ofthese motors can be reversed7.3 Three-phase inductionmotors7.2.5 Explain how single-phase motors aretested7.3.1 Explain the construction and operation ofa three-phase induction motor7.3.2 Show by means of circuit diagrams howthe stator windings are connected7.3.3 State the applications of this motor7.3.4 Explain by means of circuit diagrams howthis motor is tested7.3.5 State the advantages and disadvantagesof three-phase motors over single-phasemotors16
Syllabus: Electrical Trade Theory N2 (May 2021)Module 8: TransformersGeneral aimOn completion of this module, learners should be able to demonstrate understanding of thefunction and construction of a transformer, the operation of a transformer on and off-load, thefour three-phase transformer configurations.LEARNING OUTCOMESLEARNING CONTENT8.1 Function and construction of a singlephase transformer8.2 OperationThe learner must be able to:8.1.1 State the function of atransformer in terms ofvoltage and current8.1.2 Describe with the aid of adiagram the construction of asingle-phase transformer8.2.1 Explain with the aid of acircuit diagram the operationof a single-phase transformer8.2.2 Draw the equivalent circuitdiagram of a transformerworking at no-load8.2.3 Draw the vector diagram of atransformer working at noload8.2.4 State why transformers arerated in kVA and not kW.8.2.5 Calculate transformer ratingand turns ratio of singlephase transformers (idealtransformers only)8.2.6 Using the no-load vectordiagram, calculate themagnetising and core-losscomponents of the no-loadcurrent8.3 Three-phase transformers8.2.7 State the functions of themagnetising and core-losscomponents8.3.1 State the four common threephase transformerconfigurations8.3.2 Draw circuit diagrams toshow how three single-phasetransformers are connected17
Syllabus: Electrical Trade Theory N2 (May 2021)to form one of the followingthree-phase transformers: Star/star Star/delta Delta/delta Delta/star8.3.3 Name the three-phasetransformer used fordistribution purposes inresidential areas and statewhy.8.3.4 Calculate transformer ratingand turns ratio of threephase transformers (idealtransformers only)Module 9: EarthingGeneral aimOn completion of this module, learners should be able to demonstrate understanding ofleakage current, the earthing chain, bonding to earth, touch voltage, floating earth, earthing ofoverhead lines and the earthing of underground cables.LEARNING OUTCOMESLEARNING CONTENT9.1 The earthing chainThe learner must be able to:9.1.1 Explain what is leakage current9.1.2 State the purpose of earthing9.1.3 State the function of the earthing chain9.1.4 Show by means of a drawing howleakage current from any part of theinstallation is directed to ground9.1.5 Explain the following concepts: bonding to earth floating earth touch voltage9.2 Earthing of overhead lines9.2.1 Explain earthing of overhead lines9.3 Earthing of undergroundcables9.3.1 Explain the earthing of wire armouredcables18
Syllabus: Electrical Trade Theory N2 (May 2021)9.3.2 Explain the earthing of lead-sheathedcablesModule 10: Measuring instrumentsGeneral aimOn completion of this module, learners should be able to demonstrate understanding of howmeasuring instruments are connected to low and high voltage circuits and how the r
Syllabus: Electrical Trade Theory N2 (May 2021) 3 4. Evaluation Candidates must be evaluated continually as follows: 4.1 ICASS Trimester Mark 4.1.1 Two formal class tests for full time and part time students (or Two assignments for distance learning students only) 4.1.2 Obtain a minimum of 40% in order to qualify to write the final examination.
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4 Findings Lessons learned from Major Programmes Findings Lessons learned from major programmes 1 The government’s major projects and programmes (programmes) range from transport infrastructure, military capability and nuclear projects, information technology (IT) and digital programmes through to ones to improve school or government buildings.
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posts by the due date. There is no make-up for quizzes (instead, I will drop two lowest grades). For exams, make-ups will be considered only for legitimate reasons with proper documentation. THIS IS A SAMPLE SYLLABUS - Current course syllabus is available within Canvas SAMPLE Syllabus SAMPLE Syllabus SAMPLE Syllabus Syllabus
Changes to this syllabus for 2022 62 Changes to this syllabus For information about changes to this syllabus for 2022, go to page 62. The latest syllabus is version 1, published September 2019. Any textbooks endorsed to support the syllabus for examination from 2019 are still suitable for use with this syllabus.
