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Evidence Guide: MEM10019 - Select circuit protection devices by type and rating, fit to switchboards and install earthing

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

MEM10019 - Select circuit protection devices by type and rating, fit to switchboards and install earthing

What evidence can you provide to prove your understanding of each of the following citeria?

Determine job requirements

  1. Follow standard operating procedures (SOPs)
  2. Comply with work health and safety (WHS) requirements at all times, including appropriate risk control measures
  3. Use appropriate personal protective equipment (PPE) in accordance with SOPs
  4. Identify job and load requirements from specifications, drawings, job sheets or work instructions
Follow standard operating procedures (SOPs)

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Comply with work health and safety (WHS) requirements at all times, including appropriate risk control measures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Use appropriate personal protective equipment (PPE) in accordance with SOPs

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Identify job and load requirements from specifications, drawings, job sheets or work instructions

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Prepare and select circuit protection controls and devices for electrical installations

  1. Organise circuits and switchboard equipment to comply with layout drawings, specifications and regulatory requirements
  2. Select suitable circuit protective devices to meet specifications
  3. Select RCDs to meet required circuit requirements and specifications
  4. Select switchgear/control gear by type, rating and purpose for a particular installation or part of an installation
Organise circuits and switchboard equipment to comply with layout drawings, specifications and regulatory requirements

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Select suitable circuit protective devices to meet specifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Select RCDs to meet required circuit requirements and specifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Select switchgear/control gear by type, rating and purpose for a particular installation or part of an installation

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Install circuit protection controls and devices for electrical installations

  1. Isolate and tag circuits and equipment in accordance with procedures, where required
  2. Install circuit protection devices in compliance with job specifications and requirements
  3. Install RCDs, where required, to protect all lighting and socket outlets in final subcircuits in domestic electrical installations
  4. Install switchgear (including main switch/s) and control gear according to manufacturer and regulatory requirements
  5. Check installed components are straight and square in the required locations and within acceptable tolerances
  6. Terminate earthing to meet with the MEN system requirements
  7. Inspect installed components and earthing system visually to ensure compliance
  8. Test the earthing system for continuity and insulation resistance to ensure compliance
  9. Mark all switches, circuit-breakers, RCDs and other electrical equipment on or adjacent to the switchboard
  10. Document selection of circuit protection devices and electrical installation arrangement in accordance with SOPs
Isolate and tag circuits and equipment in accordance with procedures, where required

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Install circuit protection devices in compliance with job specifications and requirements

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Install RCDs, where required, to protect all lighting and socket outlets in final subcircuits in domestic electrical installations

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Install switchgear (including main switch/s) and control gear according to manufacturer and regulatory requirements

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Check installed components are straight and square in the required locations and within acceptable tolerances

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Terminate earthing to meet with the MEN system requirements

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Inspect installed components and earthing system visually to ensure compliance

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Test the earthing system for continuity and insulation resistance to ensure compliance

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Mark all switches, circuit-breakers, RCDs and other electrical equipment on or adjacent to the switchboard

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Document selection of circuit protection devices and electrical installation arrangement in accordance with SOPs

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

Elements describe the essential outcomes.

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

1.

Determine job requirements

1.1.

Follow standard operating procedures (SOPs)

1.2.

Comply with work health and safety (WHS) requirements at all times, including appropriate risk control measures

1.3.

Use appropriate personal protective equipment (PPE) in accordance with SOPs

1.4.

Identify job and load requirements from specifications, drawings, job sheets or work instructions

2.

Prepare and select circuit protection controls and devices for electrical installations

2.1.

Organise circuits and switchboard equipment to comply with layout drawings, specifications and regulatory requirements

2.2.

Select suitable circuit protective devices to meet specifications

2.3.

Select RCDs to meet required circuit requirements and specifications

2.4.

Select switchgear/control gear by type, rating and purpose for a particular installation or part of an installation

3.

Install circuit protection controls and devices for electrical installations

3.1.

Isolate and tag circuits and equipment in accordance with procedures, where required

3.2.

Install circuit protection devices in compliance with job specifications and requirements

3.3.

Install RCDs, where required, to protect all lighting and socket outlets in final subcircuits in domestic electrical installations

3.4.

Install switchgear (including main switch/s) and control gear according to manufacturer and regulatory requirements

3.5.

Check installed components are straight and square in the required locations and within acceptable tolerances

3.6.

Terminate earthing to meet with the MEN system requirements

3.7.

Inspect installed components and earthing system visually to ensure compliance

3.8.

Test the earthing system for continuity and insulation resistance to ensure compliance

3.9.

Mark all switches, circuit-breakers, RCDs and other electrical equipment on or adjacent to the switchboard

3.10.

Document selection of circuit protection devices and electrical installation arrangement in accordance with SOPs

Required Skills and Knowledge

Elements describe the essential outcomes.

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

1.

Determine job requirements

1.1.

Follow standard operating procedures (SOPs)

1.2.

Comply with work health and safety (WHS) requirements at all times, including appropriate risk control measures

1.3.

Use appropriate personal protective equipment (PPE) in accordance with SOPs

1.4.

Identify job and load requirements from specifications, drawings, job sheets or work instructions

2.

Prepare and select circuit protection controls and devices for electrical installations

2.1.

Organise circuits and switchboard equipment to comply with layout drawings, specifications and regulatory requirements

2.2.

Select suitable circuit protective devices to meet specifications

2.3.

Select RCDs to meet required circuit requirements and specifications

2.4.

Select switchgear/control gear by type, rating and purpose for a particular installation or part of an installation

3.

Install circuit protection controls and devices for electrical installations

3.1.

Isolate and tag circuits and equipment in accordance with procedures, where required

3.2.

Install circuit protection devices in compliance with job specifications and requirements

3.3.

Install RCDs, where required, to protect all lighting and socket outlets in final subcircuits in domestic electrical installations

3.4.

Install switchgear (including main switch/s) and control gear according to manufacturer and regulatory requirements

3.5.

Check installed components are straight and square in the required locations and within acceptable tolerances

3.6.

Terminate earthing to meet with the MEN system requirements

3.7.

Inspect installed components and earthing system visually to ensure compliance

3.8.

Test the earthing system for continuity and insulation resistance to ensure compliance

3.9.

Mark all switches, circuit-breakers, RCDs and other electrical equipment on or adjacent to the switchboard

3.10.

Document selection of circuit protection devices and electrical installation arrangement in accordance with SOPs

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

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

determining the individual load requirements of the installation

selecting the appropriate switchboard and layout arrangements

complying with Australian/New Zealand Wiring Rules, other Australian Standards, e.g. AS/NZS 3008.1.1:2009 Electrical Installations – Selection of cables – Cables for alternating voltages up to and including 0.6/1 kV – typical Australian installation conditions, Service Rules and other relevant standards when selecting circuit protection controls and devices in regard to the following aspects:

protection against indirect contact, overcurrent or excess earth leakage current conditions and over and under voltage by selecting and installing using safe working practices:

a fuse/s for fault current limiting protection

an appropriate circuit breaker/s with a current rating not less than the maximum demand of the portion of the electrical installation they control

a residual current device (RCD) with a maximum rated residual current of 30 mA

control of the electrical installation (or parts thereof) by suitable switching arrangements by selecting and installing using safe working practices:

a main switch/es to control the whole of the electrical installation

switches for isolation, emergency, mechanical maintenance and functional (control) with appropriate Ingress Protection (IP) rating

installing and terminating the compliant earthing system components for the multiple earthed neutral (MEN) system and other earthing arrangements

terminating all circuit protection controls and devices

inspect visually all components and earthing system to ensure compliance

test earthing system for continuity and insulation resistance

identify with marking all switches, circuit breakers and RCDs and other electrical equipment on or adjacent to the switchboard

using test equipment to locate faults, completing remedial action and retesting to ensure compliance

documenting reasons for selection and installation arrangement requirements in accordance with SOPs.

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)

Australian/New Zealand Wiring Rules and other related standards in regards to the following:

requirements for the selection and installation of switchgear and controlgear, including:

protection against indirect contact

protection against over current or excess earth leakage current conditions

protection against over voltage and under voltage

control of the electrical installation (or parts thereof) by suitable switching arrangements

design, selection (including form type) and installation of switchboards

design of an electrical installation

design, selection (including form type) and installation of switchboards

application and segregation requirements of separated extra-low voltage (SELV) and protected extra-low voltage (PELV) circuits, including earthing requirements and testing

application and arrangement of an isolated supply

hazards and risks in an electrical installation

protection against indirect contact, including:

methods of protection

protection by automatic disconnection of supply

touch-voltage limits

earthing system impedance

disconnection times

supplementary equipotential bonding

protection by the use of Class II equipment or by equivalent insulation

protection by electrical separation

protection by the use of RCDs

protection against thermal effects in normal service

protection against unwanted voltages

protection against over current and fault currents

protection against over voltage

protection against injury from mechanical movement

devices for isolation

fire integrity

protection from damp situations

earthing system terms, parts and arrangement

devices and operating principles for automatic disconnection of supply, including circuit breakers, fuse and RCDs

devices for isolation and switching, including for the following functions:

isolation

emergency

mechanical maintenance

functional (control)

switchboards and distribution boards purpose, types, application, layout and compliance requirements

bonding of metallic meter enclosures

minimum fault levels specified by electricity network operator

methods for determining prospective fault current

MEN arrangement, resultant fault current path and magnitude, operation of protective devices and implication of MEN link absence during fault conditions

knowledge of alternate earthing systems when required by local Regulatory Authorities, e.g. TT low voltage supply earthing system in dairy sheds in New Zealand

construction and demolition requirements as per AS/NZS 3012:2010 Electrical Installations – Construction and demolition sites.

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.

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 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