This describes the essential skills and knowledge and their level required for this unit

Evidence shall show that knowledge has been acquired of safe working practices and troubleshooting and repairing faults in electrical apparatus and circuits

All knowledge and skills detailed in this unit should be contextualised to current industry practices and technologies

KSEGA Electrical circuit and equipment faults and fault finding techniques

Evidence shall show an understanding of electrical circuit and equipment faults and fault finding techniques to an extent indicated by the following aspects

T Troubleshooting concepts encompassing

need to understand the correct operation of a circuit or equipment switching and control circuit arrangements

common faults with circuits and equipment including operator faults incorrect connections opencircuits shortcircuits device faults mechanical supply faults

typical faults symptoms and their causes operation of circuit protective device appliance does not operate single phase motor does not develop enough torque to drive the load three phase motor does not develop enough torque to drive the load motor overload trips

factors to consider in clarifying the nature of a fault initial fault report confirmation of symptoms of the fault comparison of symptoms with normal operation

effect to cause reasoning assumptions of possible causes

methods for testing assumptions visual inspection component isolation test equipment sectional testing splithalf tests

repairing the fault and the steps needed to ensure fault doesnt reoccur

dealing with intermittent faults typical causes of intermittent faults are vibration shock changes in temperature and electromagnetic interference

final testing and re commissioning

T Troubleshooting water heater and appliance circuitsequipment encompassing

circuit diagrams of common single phase and three phase hot water systems

single phase and three phase element resistance values determined from measurement and calculation from power and voltage ratings

testing single and three phase elements for correct insulation resistance and continuity

element replacement techniques

operation of thermostats thermal cutouts and pressure relief valves flow switches and checking sacrificial anodes

locating faults in common single and three phase hot water systems

repairing faulty water heating systems

T Troubleshooting electrical appliance circuitsequipment encompassing

circuit diagrams of common single phase and three phase appliances

methods to determine the cause of an RCD operation

identification of appliances that is causing an RCD to trip

testing single and three phase appliances for correct insulation resistance and continuity

operation of appliances controls

locating faults in common single and three phase appliances

repairing faulty appliances

T Troubleshooting lighting circuits encompassing

circuit and wiring diagrams of common lighting circuits including single light controlled by a single switch multiple lights controlled by a single switch two and three way switching using the loop at the light method and the loop at the switch method

causes of wiring faults from supplied symptoms and circuit andor wiring diagrams

causes of faults in ELV lighting devices include transformer iron core or electronic voltage drop heat overvoltage poor connections incompatible dimmers

diagrams of a basic fluorescent light circuit including lamp ballast and starter

locating faults in fluorescent light circuits

operation of a range of lighting control including passive infrared PIR dimmers photo electric or daylight switches and time clocks

locating faults in lighting control circuits

T Troubleshooting single phase motor and control circuits encompassing

circuit diagrams of split phase capacitor start capacitor start capacitor run universal and shaded pole single phase motors

causes of single phase motor faults from supplied symptoms and circuit diagrams

causes of electrical faults in single phase motors include open and partially open circuit winding short and partially short circuit winding open circuit rotor burnt out winding coil shorted to frame

reasons for a thermal overload trip and how often they are to be reset before investigating a cause

internal mechanical faults and their consequences include bearings fans bent shaft locked rotor blocked air vents centrifugal switches environmental factors

faults on driven loads and couplings and their consequences include slipping belts poorly aligned coupling shims vibration loads bearing failing load stalling

locating faults in single phase motors and their controls

T Troubleshooting three phase induction motor encompassing

circuit diagrams of three phase induction motors

causes of three phase motor faults from supplied symptoms and circuit diagrams

causes of electrical faults in three phase motors include open and partially open circuit phase winding short and partially short circuit phase winding open circuit rotor burnt out phase winding coil shorted to frame

reasons for a thermal overload trip and how often they are to be reset before investigating a cause

internal mechanical faults and their consequences include bearings fans bent shaft locked rotor blocked air vents environmental factors

faults on driven loads and couplings and their consequences include slipping belts poorly aligned coupling shims vibration loads bearing failing load stalling

locating faults in three phase induction motors and their controls

T Troubleshooting electrical installations encompassing

circuit diagrams wiring diagrams cable schedules and specifications of electrical installations

causes of electrical installation faults from supplied symptoms and circuit diagrams include open and partially open circuit wiring short and partially short circuit wiring low insulation resistance incorrect polarity transposition of conductors RCD tripping

locating faults in electrical installations

repairing faulty electrical installation circuits components and wiring

The evidence guide provides advice on assessment and must be read in conjunction with the Performance Criteria Required Skills and Knowledge the Range Statement and the Assessment Guidelines for this Training Package

The Evidence Guide forms an integral part of this unit It must be used in conjunction with all parts of this unit and performed in accordance with the Assessment Guidelines of this Training Package

Overview of Assessment

Longitudinal competency development approaches to assessment such as Profiling require data to be reliably gathered in a form that can be consistently interpreted over time This approach is best utilised in Apprenticeship programs and reduces assessment intervention It is the Industrys preferred model for apprenticeships However where summative or final assessment is used it is to include the application of the competency in the normal work environment or at a minimum the application of the competency in a realistically simulated work environment It is recognised that in some circumstances assessment in part or full can occur outside the workplace However it must be in accordance with industry and regulatory policy

Methods chosen for a particular assessment will be influenced by various factors These include the extent of the assessment the most effective locations for the assessment activities to take place access to physical resources additional safety measures that may be required and the critical nature of the competencies being assessed

The critical safety nature of working with electricity electrical equipment gas or any other hazardous substancematerial carries risk in deeming a person competent Sources of evidence need to be rich in nature to minimise error in judgment

Activities associated with normal every day work have a bearing on the decision as to how much and how detailed the data gathered will contribute to its richness Some skills are more critical to safety and operational requirements while the same skills may be more or less frequently practised These points are raised for the assessors to consider when choosing an assessment method and developing assessment instruments Sample assessment instruments are included for Assessors in the Assessment Guidelines of this Training Package

Critical aspects of evidence required to demonstrate competency in this unit

Before the critical aspects of evidence are considered all prerequisites shall be met

Evidence for competence in this unit shall be considered holistically Each element and associated performance criteria shall be demonstrated on at least two occasions in accordance with the Assessment Guidelines UEE Evidence shall also comprise

A representative body of work performance demonstrated within the timeframes typically expected of the discipline work function and industrial environment In particular this shall incorporate evidence that shows a candidate is able to

Implement Occupational Health and Safety workplace procedures and practices including the use of risk control measures as specified in the performance criteria and range statement

Apply sustainable energy principles and practices as specified in the performance criteria and range statement

Demonstrate an understanding of the essential knowledge and associated skills as described in this unit It may be required by some jurisdictions that RTOs provide a percentile graded result for the purpose of regulatory or licensing requirements

Demonstrate an appropriate level of skills enabling employment

Conduct work observing the relevant Anti Discrimination legislation regulations polices and workplace procedures

Demonstrated consistent performance across a representative range of contexts from the prescribed items below

Find and repair faults in electrical apparatus and circuits as described as described in and including

A

Envisaging the likely extent of the fault and the work from faultbreakdown reports andor discussion to elicit information on the faultbreakdown with appropriate persons

B

Using appropriate tools and resources and methodical fault finding techniques

C

Locating and troubleshooting faults efficiently

D

Conducting tests or measurements in strict accordance with OHS and electrical safe working requirements

E

Rectifying faults effectively

F

Reporting cause of the fault and justifying the repairs undertaken

G

Dealing with unplanned events

Context of and specific resources for assessment

This unit should be assessed as it relates to normal work practice using procedures information and resources typical of a workplace This should include

OHS policy and work procedures and instructions

Suitable work environment facilities equipment and materials to undertake actual work as prescribed by this unit

These should be part of the formal learningassessment environment

Note

Where simulation is considered a suitable strategy for assessment conditions must be authentic and as far as possible reproduce and replicate the workplace and be consistent with the approved industry simulation policy

The resources used for assessment should reflect current industry practices in relation to troubleshooting and repairing faults in electrical apparatus and circuits

Method of assessment

This unit shall be assessed by methods given in Volume Part Assessment Guidelines

NoteCompetent performance with inherent safe working practices is expected in the industry to which this unit applies This requires assessment in a structured environment which is primarily intended for learningassessment and incorporates all necessary equipment and facilities for learners to develop and demonstrate the essential knowledge and skills described in this unit

Note:
Competent performance with inherent safe working practices is expected in the industry to which this unit applies. This requires assessment in a structured environment which is primarily intended for learning/assessment and incorporates all necessary equipment and facilities for learners to develop and demonstrate the essential knowledge and skills described in this unit.

Concurrent assessment and relationship with other units

For optimisation of training and assessment effort competency development in this unit may be arranged concurrently with unit

UEENEEGA

UEENEEG109A

Develop and connect electrical control circuits t