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Elements and Performance Criteria

  1. Determine job requirements
  2. Prepare to inspect, test and verify electrical installations
  3. Inspect, test and verify electrical installations
  4. Report inspection and test results

Range Statement

This field allows for different work environments and conditions that may affect performance. Essential operating conditions that may be present (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) are included.

Electrical installations include:

at least one (1) general electrical installation comprising a main switchboard, supplying more than one circuit each for lighting, socket outlets and fixed appliances

at least one (1) industrial electrical installation comprising a distribution board separate from the main switchboard and at least one (1) circuit supplying a three-phase load and safety system in one of the following industrial environments:

factory

building

off shore platform

mine site processing

oil and gas installation

processing plant

workshop

underground installation

three-phase loads include at least one (1) or more of the following:

motors – for pumps, conveyors, mills, agitators, crushers and screening plants

heaters

compressor packages

heating, ventilation and air conditioning (HVAC) units

facility accommodation units, sea container workshops and storage units, and laboratories

workshop equipment, including lathes, milling machines and welders

underground dewatering systems and ‘gate end’ boxes for drilling equipment

Regulatory requirements include:

AS/NZS 3000:2007 Electrical Installations (known as the Australian/New Zealand Wiring Rules)

AS/NZS 3017:2007 Electrical installations – Verification guidelines.

AS/NZS 3018:2001 Electrical Installations – Domestic installations

AS/NZS 3760:2010 In-service safety inspection and testing of electrical equipment

AS/NZS 3012:2010 Electrical installations – Construction and demolition sites

Safe working practices include:

demonstration of safe working practices and installation in accordance with industry established safe and sound practices


Performance Evidence

Evidence required to demonstrate competence in this unit must be relevant to and satisfy the requirements of the elements and performance criteria on at least two (2) occasions and include:

following work instructions, standard operating procedures (SOPs) and safe work practices

obtaining the relevant work permits and implementing appropriate risk control measures

identifying and interpreting circuits, drawings, plans and specifications relevant to the work to be undertaken

preparing and following work plans in accordance with legislative and regulatory requirements and hazard and safety requirements

reviewing all relevant documentation pertaining to the electrical installation to be inspected and tested

consulting with all relevant personnel affected by this process

obtaining the necessary tools, equipment and testing instruments ensuring all instruments are calibrated

preparing a safe work method statement (SWMS) or job safety analysis (JSA) in the absence of established procedures for effective isolation

performing a visual inspection ensuring that it meets the requirements of the Australian/New Zealand Wiring Rules – Testing and Verification Visual Inspection Check List

performing the mandatory and optional circuit tests required for electrical cables in a range of installations and final subcircuits, including:

following safe testing procedures

testing to show if the earth continuity is sufficiently low

testing to show if the insulation resistance is sufficiently high

testing to show if the polarity and circuit connections are correct

testing to show earth fault-loop impedance is sufficiently low

performing testing to verify that residual current devices (RCDs) operate as intended

identifying and reporting of any non-compliance defect/s and making necessary recommendations in accordance with appropriate procedures

completing all mandatory documentation in accordance with regulatory and local supply authority requirements.


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)

isolation and lockout procedures and the purpose and use of SWMS or JSA

tools, equipment and test instruments needed to conduct electrical installation inspection, testing and verification process

need for calibration of instruments

testing procedures, requirements and considerations

visual inspection of installations for compliance with the Australian/New Zealand Wiring Rules, including:

general – protection against direct and indirect contact, hazardous parts, spread of fire and general condition

consumers mains

switchboards

wiring systems

electrical equipment

earthing

mandatory tests, including:

continuity of the earthing system

insulation resistance

polarity

correct circuit connections

optional tests, including:

fault-loop impedance

verification of operation of RCDs

mandatory documentation and records as required by local supply authority, legislative and regulatory requirements

documentation for periodic testing and tagging of electrical equipment

inspection and testing of construction and demolition sites complying with AS/NZS 3012:2010 Electrical installations – Construction and demolition sites, and recording of tests.