Release 1. This is the first release of this unit of competency in the UEE Electrotechnology Training Package.

This unit involves the skills and knowledge required to solve problems in multiple path circuits.

It includes working safely; applying problem-solving procedures, including the use of voltage, current and resistance measuring devices; and providing solutions derived from measurements and calculations to predictable problems in multiple path circuits.

No licensing, legislative or certification requirements apply to this unit at the time of publication.

UEECD0007 Apply work health and safety regulations, codes and practices in the workplace

UEECD0046 Solve problems in single path circuits

Cross Discipline

Electrotechnology

ELEMENTS 

PERFORMANCE CRITERIA 

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1  

Prepare to work on multiple path circuits 

1.1 

Scope of work to be undertaken is determined from relevant documentation, electrical drawings or relevant person/s

1.2 

Work health and safety (WHS)/occupational health and safety (OHS) workplace procedures for a given work area are identified and applied

1.3 

Electrical hazards are identified, risks are assessed, and control measures are implemented

1.4 

Advice is sought from the relevant person/s to ensure the work is coordinated effectively with others

1.5 

Materials required for work are identified and accessed in accordance with workplace procedures

1.6 

Tools, equipment and testing devices needed to carry out work are obtained and checked for correct operation and safety

2 

Solve multiple path circuit problems 

2.1 

The need to test or measure live is determined in accordance with WHS/OHS requirements and when necessary conducted in accordance with workplace procedures

2.2 

Circuits are checked as isolated in accordance with workplace procedures and regulatory requirements

2.3 

Expected circuit parameters are calculated from relevant component ratings/specifications

2.4 

Circuit parameters are measured in accordance with industry standards and checked against expected values

2.5 

Circuit problems are assessed using measured and calculated values as they apply to multiple path circuits

2.6 

Circuit solutions are determined from measured and calculated values of resistance, voltage, current and power in extra-low voltage (ELV) multiple path circuits

2.7 

Solutions are tested in accordance with workplace procedures and industry standards

2.8 

Problems are resolved without damage to equipment, circuits, the surrounding environment or services using sustainable energy practices

2.9 

Unplanned situations are responded to in accordance with workplace procedures, in a manner that minimises risk to personnel and equipment

3 

Complete work and document problem-solving activities 

3.1 

WHS/OHS work completion risk control measures and procedures are followed

3.2 

Worksite is cleaned and made safe in accordance with workplace procedures

3.3 

Justification for solutions used to resolve circuit problems is documented

3.4 

Work completion is documented, electrical drawings are updated, and relevant personnel are notified in accordance with workplace procedures

Foundation skills essential to performance are explicit in the performance criteria of this unit of competency.

Range is restricted to essential operating conditions and any other variables essential to the work environment.

Non-essential conditions may be found in the UEE Electrotechnology Training Package Companion Volume Implementation Guide.

Installation, fault finding, maintenance or development work functions in multiple path circuits must be demonstrated in one of the following disciplines:

• computers
• data communications
• electrical
• electronics
• fire protection
• instrumentation
• refrigeration and air conditioning
• renewable and sustainable energy systems
• security technology

No equivalent unit

Release 1. This is the first release of this unit of competency in the UEE Electrotechnology Training Package.

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements, performance criteria and range of conditions on at least two separate occasions and include:

• applying work health and safety (WHS)/occupational health and safety (OHS) requirements and workplace procedures, including:

• identifying and assessing hazards and risks
• implementing control measures
• safely measuring the parameters for the whole or any part of a d.c. circuit

• working safety with electric circuits in the electrotechnology sector, including:

• checking circuits are isolated in accordance with workplace procedures and regulatory requirements
• applying protections against the physiological effects of electrical currents

• calculating values of voltage, current and resistance in single source series/parallel circuits given any two of these quantities
• calculating power in single source series/parallel circuits from known values of voltage, current and/or resistance
• connecting a parallel circuit: power supply, protection device, switch and loads
• connecting a series/parallel circuit: power supply, protection device, switch and loads
• measuring values of voltage and current in single source ELV series/parallel circuits
• measuring values of resistance, including insulation resistance and continuity/no continuity
• measuring values of capacitance
• testing capacitors to determine serviceability
• altering an existing circuit to comply with specified operating parameters
• developing circuits to comply with a specified function and operating parameters
• using methodical techniques to solve circuit problems from measured and calculated values
• ensuring compliance with relevant Australian Standards and legislation
• completing work and documenting activities.

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements, performance criteria and range of conditions and include knowledge of:

• factors affecting resistance, including:

• four factors that affect the resistance of a conductor (type of material, length, cross-sectional area and temperature)
• affect the change in the type of material (resistivity) has on the resistance of a conductor
• affect the change in ‘length’ has on the resistance of a conductor
• affect the change in ‘cross-sectional area’ has on the resistance of a conductor
• effects of temperature change on the resistance of various conducting materials
• effects of resistance on the current-carrying capacity and voltage drop in cables
• techniques for calculation of the resistance of a conductor from factors such as conductor length, cross-sectional area, resistivity and changes in temperature
• using digital and analogue ohmmeter to measure the change in resistance of different types of conductive materials (copper, aluminium, nichrome and tungsten) when those materials undergo a change in type of material length, cross-sectional area and temperature

• series/parallel circuits including:

• schematic diagram of a single source d.c. series/parallel circuit
• identification of the major components of a series/parallel circuit (power supply, protection device, switch and loads)
• applications where series/parallel circuits are used in the electrotechnology industry
• characteristics of a series/parallel circuit (load connection, current paths, voltage drops, power dissipation, and effects of an open circuit in a series/parallel circuit)
• relationship between voltages, currents and resistances in a bridge network
• calculation of the total:

• resistance of a series/parallel circuit
• current of a series/parallel circuit
• voltage and the individual voltage drops of a series/parallel circuit

• techniques for setting up and connecting a single source d.c. series/parallel circuit
• resistance, voltage and current measurements in a single source d.c. series/parallel circuit
• the voltage, current, resistances or power dissipated from measured values of any two of these quantities

• parallel circuits including:

• schematic diagram of a single source d.c. parallel circuit
• identification of the major components of a parallel circuit (power supply, protection device, switch and loads)
• applications where parallel circuits are used in the electrotechnology industry
• characteristics of a parallel circuit (load connection, current paths, voltage drops, power dissipation, and effects of an open circuit in a parallel circuit)
• relationship between currents entering a junction and currents leaving a junction
• relationship between branch currents and resistances in a two-branch current divider network
• methods to calculate total:

• resistance of a parallel circuit
• current of a parallel circuit
• voltage and the individual voltage drops of a parallel circuit

• techniques for setting up and connecting a single source d.c. parallel circuit
• resistance, voltage and current measurements in a single source parallel circuit
• voltage, current, resistance or power dissipated from measured values of any of these quantities
• output current and voltage levels of connecting cells in parallel

• meters in a circuit, including:

• types, operating characteristics and purpose of instruments/meters used to measure voltage, current, resistance and insulation resistance
• advantages and disadvantages of different instruments/meters commonly used in the field
• hazards involved in using electrical instruments/meters and relevant safety control measures
• techniques to correctly connect and accurately read instruments/meters used in the field and common errors that may occur when connecting and reading meters
• consequences of incorrect connection of instruments/meters into a circuit
• techniques for calculation of resistance values using voltmeter and ammeter reading

• resistance measurement, including:

• types, operating characteristics, purpose and storage of instruments to measure resistance (including insulation resistance)
• functions of various analogue and digital insulation resistance testers
• reasons why the supply must be isolated prior to using the insulation resistance tester
• where and why the continuity test and insulation resistance test would be used in an electrical installation
• the voltage ranges of an insulation resistance tester and where each range may be used
• AS/NZS 3000 requirements for resistance measurement/testing
• purpose and method to carry out a calibration check on an resistance tester
• techniques for measurement of:

• low values of resistance using a resistance tester continuity functions
• high values of resistance using a resistance tester insulation resistance function
• resistance using volt-ammeter methods

• capacitors and capacitance including:

• techniques for identification of various types of capacitors commonly used in the electrotechnology industry
• circuit symbol of various types of capacitors: standard, variable, trimmer and polarised
• terms and units for capacitance and electric charge
• behaviour of a series d.c. circuit containing resistance and capacitance components. - charge and discharge curves
• techniques for calculation of quantities from given information: capacitance, charge and voltage
• techniques for calculation one time constant as well as the time taken to fully charge and discharge a given capacitor
• techniques for connection of a series d.c. circuit containing capacitance and resistor to determine the time constant of the circuit

• capacitors in series and parallel, including:

• hazards involved in working with capacitance effects and the safety control measures that should be taken
• safe handling and the correct methods of discharging various size capacitors
• dangers of a charged capacitor and the consequences of discharging a capacitor through a person
• effects of capacitors connected in parallel by calculating their equivalent capacitance
• effects on the total capacitance of capacitors connected in series by calculating their equivalent capacitance
• techniques for connecting capacitors in series and/or parallel configurations to achieve various capacitance values
• common faults in capacitors
• techniques for testing of capacitors to determine serviceability
• application of capacitors in the electrotechnology industry.

Assessors must hold credentials specified within the Standards for Registered Training Organisations current at the time of assessment.

Assessment must satisfy the Principles of Assessment and Rules of Evidence and all regulatory requirements included within the Standards for Registered Training Organisations current at the time of assessment.

Assessment must occur in workplace operational situations where it is appropriate to do so; where this is not appropriate, assessment must occur in simulated workplace operational situations that replicate workplace conditions.

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.

Resources for assessment must include access to:

• a range of relevant exercises, case studies and/or other simulations
• relevant and appropriate materials, tools, equipment and personal protective equipment (PPE) currently used in industry
• applicable documentation, including workplace procedures, equipment specifications, manufacturer instructions, regulations, codes of practice and operation manuals.