Application
This unit of competency defines the skills and knowledge required to check complex circuits and systems that interconnect a number of interdependent apparatus, diagnose faults, and make required modifications and test the modified system.
It applies to work on interconnected electrical circuits where electrical equipment and/or components are connected electrically, that is, there are multiple electrical power supplies or sources, voltages or circuits which are found in the control or switching of the circuit.
No licensing, legislative or certification requirements apply to this unit at the time of publication.
What You'll Learn
1. Determine job requirements
- 1.1 Follow standard operating procedures (SOPs)
- 1.2 Comply with work health and safety (WHS) requirements at all times
- 1.3 Use appropriate personal protective equipment (PPE) in accordance with standard operating procedures (SOPs)
- 1.4 Identify job requirements from specifications
2. Determine system specifications and characteristics
- 2.1 Determine complex circuit and system function and characteristics with reference to circuit diagrams, specifications, schematics and consultation with technical advisor
- 2.2 Obtain, read and interpret system specifications and operational data
- 2.3 Verify findings using appropriate tools, test equipment, procedures and techniques
- 2.4 Record results and analyse to determine appropriate modification
3. Modify circuits and systems
- 3.1 Undertake modifications as determined in accordance with procedures
- 3.2 Test modifications in accordance with legislative and regulatory requirements and monitor to assess suitability
- 3.3 Document modifications in drawings and/or schematics in accordance with SOPs
Assessment Requirements
Performance Evidence
Evidence required to demonstrate competence in this unit must be relevant to and satisfy the requirements of the elements and performance criteria and include:
following work instructions, standard operating procedures (SOPs) and safe work practices
identifying and interpreting circuits diagrams, flow charts, specifications, schematics, drawings, engineering data sheets, maintenance records and other relevant data in analysing and determining appropriate system modifications
checking and clarifying strategies appropriate to the proposed modification with technical advisors using appropriate communication skills
undertaking calculations and numerical operations associated with modifying complex electrical circuits and systems
carrying out modifications in accordance with site procedures, legislative, statutory and regulatory requirements on at least two occasions
testing modifications using appropriate test equipment to ensure compliance with requirements on at least two occasions
monitoring modifications to assess suitability
documenting modifications or incorporating modifications in drawing and schematics in accordance with SOPs.
Note: Where a volume and/or frequency is not specified, demonstration must be provided at least once.
Knowledge Evidence
Evidence required to demonstrate the required knowledge for this unit must be relevant to and satisfy the requirements of the elements and performance criteria and include knowledge of:
safe work practices and procedures and use of personal protective equipment (PPE)
system interrelationship and dynamics
complex electrical circuits and systems including:
industrial control systems
automatic process machines
material transfer systems
distribution systems
complex control panels incorporating:
circuit protective devices
relays
timers
transformers
sensors
programmable controllers
operation of complex electrical circuits and systems
implications of modifications to system including hazards
operational specifications of the circuit and system
common electrical test instruments and their application
appropriate test equipment and their application to the testing of the modified circuit and system
reporting and recording requirements associated with the modification of complex electrical circuits and systems
industry standards and guidelines including
national and Australian standards
Safe Work Australia
state/territory regulatory codes of practice and/or standards.
Assessment Conditions
Assessors must:
have vocational competency in modifying complex electrical circuits and systems at least to the level being assessed with relevant industry knowledge and experience
satisfy the assessor requirements in the Standards for Registered Training Organisations 2015 or its replacement and comply with the National Vocational Education and Training Regulator Act 2011, its replacement or equivalent legislation covering VET regulation in a non-referring state/territory as the case requires.
Where possible assessment must occur in operational workplace situations. Where this is not possible or where personal safety or environmental damage are limiting factors, assessment must occur in a sufficiently rigorous simulated environment that reflects realistic operational workplace conditions that cover all aspects of workplace performance, including environment, task skills, task management skills, contingency management skills and job role environment skills.
Conditions for assessment must include access to all tools, equipment, materials and documentation required including relevant workplace procedures, product and manufacturing specifications.
Assessment processes and techniques must be appropriate to the language, literacy and numeracy requirements of the work being performed and the needs of the candidate.
Foundation Skills
- text: This section describes those language, literacy, numeracy and employment skills that are essential to performance. Foundation skills essential to performance are explicit in the performance criteria of this unit of competency.
Prerequisite Units
- {'code': 'MEM09002', 'title': 'Interpret technical drawing'}
- {'code': 'MEM10002', 'title': 'Terminate and connect electrical wiring'}
- {'code': 'MEM10003', 'title': 'Install and test electrical wiring and circuits up to 1000 volts a.c. and 1500 volts d.c.'}
- {'code': 'MEM11011', 'title': 'Undertake manual handling'}
- {'code': 'MEM12002', 'title': 'Perform electrical/electronic measurement'}
- {'code': 'MEM12004', 'title': 'Perform precision electrical/electronic measurement'}
- {'code': 'MEM12023', 'title': 'Perform engineering measurements'}
- {'code': 'MEM12024', 'title': 'Perform computations'}
- {'code': 'MEM13015', 'title': 'Work safely and effectively in manufacturing and engineering'}
- {'code': 'MEM14006', 'title': 'Plan work activities'}
- {'code': 'MEM16006', 'title': 'Organise and communicate information'}
- {'code': 'MEM18001', 'title': 'Use hand tools'}
- {'code': 'MEM18002', 'title': 'Use power tools/hand held operations'}
- {'code': 'MEM18048', 'title': 'Fault find and repair/rectify basic electrical circuits'}
- {'code': 'MEM18049', 'title': 'Disconnect/reconnect fixed wired equipment up to 1000 volts a.c./1500 volts d.c.'}
- {'code': 'MEM18051', 'title': 'Fault find and repair/rectify complex electrical circuits'}
Parent Qualifications
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MEM18046 — Fault find and repair electrical equipment/components up to 1000 volts a.c./1500 volts d.c.
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MEM04024 — Produce moulds and cores by hand
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MEM18112 — Perform basic eddy current testing
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MEM21004 — Clean watch and clock components
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Request Early AccessLast updated from training.gov.au: 25 February 2026