NVQ 2347-03

Unit 102 – Health, Safety and Environmental Considerations in Dwellings

Aim – This unit is designed to enable learners to develop the skills and apply the relevant knowledge associated with Health and Safety legislation, practices and procedures when installing and maintaining electrical systems and equipment in dwellings.

Learning Outcome 1

Be able to apply relevant Health and Safety legislation in the workplace

Assessment criteria

1. Identify which workplace Health and Safety procedures are relevant to the working environment and comply with their duties and obligations as defined by current legislation and organisational procedures
2. Produce a risk assessment and method statement in accordance with organisational procedures for a given work activity
3. Work within the requirements of:
   1. risk assessments
   2. method statements
   3. safe systems of work

 

Learning Outcome 2

Be able to assess the work environment for hazards and identify remedial actions in accordance with Health and Safety legislation

Assessment criteria

1. Identify unsafe situations and conditions and take remedial actions
2. Assess the work environment and revise work practices accordingly to take into account hazards which could cause harm, including the handling of potentially hazardous:
   1. materials
   2. tools
   3. equipment
3. Identify any hazards which may present a high risk and report their presence to relevant persons who have overall responsibility for Health and Safety in the workplace
4. Apply measures to control Health and Safety hazards
5. Select and use correct personal protective equipment

 

Learning Outcome 3

Be able to apply methods and procedures to ensure work on site is in accordance with Health and Safety legislation

Assessment criteria

1. Ensure that the Health and Safety of themselves and others is not endangered through personal conduct and behaviour within the workplace
2. Apply procedures to ensure the safe use, maintenance and storage of tools, plant and equipment as stipulated in:
   1. workplace policies (company & site)
   2. supplier information
   3. manufacturer’s instructions.
3. Comply with information, warning, mandatory instruction and prohibition notices
4. Apply procedures to ensure the safety of the work location through the correct use of guards, barriers and notices
5. Use access equipment correctly

Range

Access equipment:
Assess two from the following:

• ladder
• tower scafÏold or mewp
• stepladder
• platform

 

Learning Outcome 4

Be able to work in accordance with environmental legislation for electrical services

Assessment criteria

1. Use appropriate procedures for the safe handling, storage and disposal of hazardous materials and products, in accordance with the:
   • Environmental Protection Act
   • The Hazardous Waste Regulations
   • Pollution Prevention and Control Act
   • Control of Pollution Act
   • The Control of Noise at Work Regulations
   • Environment Act

Unit 106 – Plan and Oversee the Electrical Work Activities in Dwellings

Aim – This unit will enable learners to develop the competence required to implement practices and procedures for overseeing and organising the work environment for the installation of electrical systems and equipment​

Learning Outcome 1

Be able to provide relevant people with technical and functional information for work on electrical systems and equipment

Assessment criteria

1. Liaise with relevant people to evaluate the information they require to ensure that systems, equipment or components can be operated safely and effectively
2. Identify appropriate technical and functional information that is required for the work activity
3. Provide information in a timely, courteous, suitable and professional manner in accordance with organisational procedures and engineering standards.

 

Learning Outcome 2

Be able to co-ordinate liaison with other relevant persons during work activities

Assessment criteria

1. Select effective methods to co-ordinate with other workers/contractors, including steps to resolve issues or delays
2. Apply communication techniques that are clear, accurate and appropriate to the situation
3. Apply principles of customer service.

 

Learning Outcome 3

Be able to organise and oversee work activities and operations in dwellings

Assessment criteria

1. Organise operatives by allocating duties and responsibilities to make the best use of their competence and skill
2. Monitor the work of operatives to ensure it is in accordance with:
   1. industry working practices
   2. programme of work
   3. Health & Safety requirements
   4. cost-effectiveness
   5. environmental considerations

Learning Outcome 4

Be able to organise a programme for working on single-phase electrical systems and equipment

Assessment criteria

1. Produce a simple programme of work from the work specification, including requirements for the following::
   1. estimate of the amount of time required for completion of the work
   2. liaison with other trades where necessary
2. Communicate with others clearly and concisely
3. Liaise with other relevant parties to resolve issues or delays

 

Learning Outcome 5

Be able to organise the resource requirements for work on electrical systems and equipment in dwellings

Assessment criteria

1. Organise provision of resources to include:
   1. materials
   2. fixings
   3. plant
   4. labour
   5. tools
2. Confirm that materials available are:
   1. the right type
   2. fit for purpose
   3. in the correct quantity
   4. suitable for work to be completed cost-efficiently
3. Ensure that resources are undamaged at the point of delivery
4. Implement measures which ensure the safe and effective storage of materials, tools and equipment in the work location

Unit 109 – Apply Design and Installation Practices including Termination and Connection of Conductors in Dwellings

Aim – This unit will enable learners to demonstrate the understanding and competence required to terminate and connect conductors and cables in electrical systems, and plan, prepare and install wiring systems and associated equipment in dwellings in accordance with approved industry practices, statutory and non-statutory regulations:

• The Electricity at Work Regulations
• The current edition of BS 7671
• Health & Safety at Work Act
• Building Regulations

Learning Outcome 1

Prepare to install wiring systems, enclosures and associated equipment in dwellings

Assessment criteria

1. Apply appropriate procedures to include:
   1. adopting appropriate PPE
   2. following a safe system of work (eg working in accordance with a risk assessment and method statement)
   3. selecting appropriate tools/equipment for the installation work
2. Prepare to install wiring systems, enclosures and associated equipment, to include:
   1. report any pre-work damage/defects to existing equipment or building features, to the relevant person (such as customer/client, site/line manager)
   2. confirm site readiness for installation work to begin
   3. confirm authorisation for the installation work to start
3. Use documentation to confirm that materials and equipment are of the correct quantity and are free from damage
4. Ensure the planned locations for the wiring system and associated equipment are compatible with other building services (eg gas, water or other electrical services)
5. Check the planned locations for the wiring system in terms of:
   1. cosmetic appearance
   2. external influences

 

Learning Outcome 2

Interpret appropriate information for the installation of wiring systems, enclosures and associated equipment

Assessment criteria

1. Use sources of information to enable the installation of wiring systems, enclosures and associated equipment to be carried out including: Assess two of the following:
   • specifications
   • work schedules/programmes
   • manufacturer instructions
   • layout drawings
   • other appropriate source of information (eg BS 7671, other plans or diagrams, ‘approved documents’, Building Regulations)

 

Learning Outcome 3

Install wiring systems, and equipment in accordance with current relevant statutory and non-statutory regulations

Assessment criteria

1. Use measuring and marking out techniques which are appropriate to the wiring system, wiring enclosure and/or associated equipment that is being installed
2. Install cables in accordance with BS 7671, the installation specification and programme of work: Assess four from:
   • Single core (singles)
   • Multicore insulated
   • PVC – PVC flat profile cable
   • DC cabling
   • SWA cable
   • Data including PoE
   • Fire resistant cabling (not including MICC)
3. Install the following in accordance with the wiring regulations, the installation specification and agreed planned programme of work: Assess three from:
   • PVC conduit
   • PVC trunking
   • Cable basket
   • Cable tray
4. Install the following types of electrical equipment and accessories, in accordance with, BS 7671, the installation specification, manufacturers’ instructions and the programme of work: Assess ALL of the following:
   1. Distribution boards/consumer units
   2. Socket outlets
   3. Luminaires
   4. Isolators/switches
   5. Overcurrent protective devices
5. Assess four from the following:
   • Electric vehicle charging point
   • Fire detection components
   • Data socket outlets
   • WI-FI router
   • Smart camera and or Smart doorbell
   • Smart lighting control (not individual Smart lamp)
   • Smart heating controls including hard-wired connections
   • other appropriate equipment within a dwelling (eg heating system components, control equipment)
6. Dispose of waste materials in accordance with site procedures and statutory requirements

 

Learning Outcome 4

Confirm the quality of the completed work

Assessment criteria

1. Make good all parts of the building following installation work
2. Ensure the installed wiring system/s and enclosure/s meet specified requirements including that they:
   1. are the correct type and fit for purpose
   2. are installed in accordance with BS 7671
   3. meet the installation specification/other relevant plans/instructions
   4. are installed in accordance with any relevant manufacturer instructions

 

Learning Outcome 5

Prepare to terminate and connect cables and conductors used in dwellings

Assessment criteria

1. Apply appropriate procedures to include:
   1. selecting appropriate tools/equipment to enable termination and connection
   2. adopting appropriate PPE
   3. following a safe system of work (eg risk assessment, method statement, permit to work procedure)
2. Ensure it is safe to complete termination and connection in terms of:
   1. checking for presence of supply/carrying out safe isolation
   2. mechanical soundness of the electrical equipment to be connected to
   3. checking for unsafe situations

 

Learning Outcome 6

Terminate and connect conductors and cables used in dwellings

Assessment criteria

1. Terminate and connect cables and conductors in accordance with manufacturers’ instructions, BS 7671, and any relevant drawing or specification: Assess four from:
   • Single core (singles)
   • Multicore insulated
   • PVC – PVC flat profile cable
   • DC cabling
   • SWA cable
   • Data including PoE
   • Fire resistant cabling (not including MICC)
2. Connect to electrical equipment in accordance with manufacturers’ instructions, BS 7671, and any relevant drawing or specification: Assess five from:
   • Isolators/switches
   • Socket outlets
   • Distribution boards/consumer control units
   • Luminaires
   • Overcurrent protective devices
   • Earthing terminals
   • Data socket outlets or data connections
   • Wired fire detection/alarm components
   • other appropriate equipment within a domestic dwelling (such as heating system components)
3. Terminate and connect conductors, using appropriate methods: Assess two of the following:
   1. screwing
   2. crimping
   3. non-screw compression
   4. insulation displacement
4. Ensure that terminations and connections are electrically and mechanically sound (inspecting and testing terminations)
5. Ensure cables have appropriate identification in accordance with BS 7671

 

Learning Outcome 7

Understand design and installation practices and procedures – To be assessed on ONE occasion via Professional Discussion

Assessment criteria

1. Describe the procedures required for establishing safe working systems on domestic work sites during installation
2. Explain the processes required when selecting the appropriate cables and wiring systems in accordance with current BS 7671 requirements for the installation
3. Explain how to ensure installation requirements are met when using:
   1. protective devices
   2. basic and fault protection
4. Explain how cables and equipment are installed in accordance with:
   1. BS 7671 current requirements and the IET On-Site Guide
   2. Building Regulations
5. Describe how fire safety standards are met, including detection and alarm systems used in domestic dwellings

Range

Procedures:
Working in accordance with:

• Risk assessments
• Method statements
• Permit to work (where applicable, dependent on type of domestic site)
• Safe Isolation

Processes:
Selection of suitable cables and wiring systems for installation and client specifications in line with current BS 7671 regulations:

• determine the design current
• select a suitably rated protective device
• establish the installation method reference
• determine appropriate rating factors
• determine the minimum cross-sectional area of live conductors, taking into consideration current carrying capacity and voltage drop
• establish if the voltage drop is acceptable
• verify disconnection times have been achieved
• evaluate thermal constraints
• interpret the requirements of sources of information in the design of an installation

Requirements:
Working in accordance with the requirements of Part 4 (Protection for Safety) of BS 7671:

– Protective devices

• Semi-enclosed rewireable fuses
• Cartridge fuses
• Circuit breakers
• RCDs
• RCBOs
• AFDDs
• SPDs

– Basic Protection:

• insulation of live parts
• use of barriers
• use of enclosures
• use of Extra-Low Voltage (ELV)

Fault Protection:

• earthing of exposed conductive parts
• bonding of extraneous conductive parts
• achieving ADS

Fire Safety Standards:

• Building Regulations document B
• BS 5839-6:2019+A1:2020

Fire detection and alarm systems in domestic dwellings:

• Smoke detectors
• Heat detectors
• Sounders
• Control panels
• Flashing beacons

Unit 113 – Inspect, Test, Report and Commission Electrical Systems in Dwellings

Aim – This unit will enable learners to develop the competence required to inspect, test, commission and certify or report on electrical systems and equipment in buildings, structures and the environment in accordance with approved industry practices, statutory and non-statutory regulations:

• The Electricity at Work Regulations
• The current edition of BS 7671
• Health & Safety at Work Act
• Building Regulations

Learning Outcome 1

Be able to confirm safety of the system and equipment prior to completion of inspection, testing and commissioning of single-phase systems in accordance with statutory and non-statutory regulations

Assessment criteria

1. Carry out safe isolation procedures in accordance with regulatory requirements for electrical installations
2. Check for diverted neutral currents on PME installations
3. Ensure the Health and Safety of themselves and others within the work location during inspection, testing and commissioning
4. Check the safety of electrical systems prior to the commencement of inspection, testing and commissioning

 

Learning Outcome 2

Be able to inspect single-phase electrical systems and equipment

Assessment criteria

1. Assess whether the safe system of work is appropriate to the work activity
2. Carry out a visual inspection in accordance with the requirements of the installation specification, BS 7671 and IET Guidance Note 3
3. Complete necessary inspections documentation in accordance with the BS 7671 and IET Guidance Note 3 making technical decisions

 

Learning Outcome 3

Be able to test and commission single-phase electrical systems and equipment

Assessment criteria

1. Select the correct test instruments and their accessories for tests
2. Carry out tests in accordance with the installation specification and BS 7671 and manufacturer’s instructions. Tests include:
   1. continuity
   2. insulation resistance
   3. polarity
   4. earth fault loop impedance/earth electrode
   5. prospective fault current
   6. RCD operation
   7. functional testing
3. Verify test results reporting all findings to relevant persons, as appropriate:
   1. representatives of other services/colleagues
   2. customers/clients
4. Complete in accordance with BS 7671 and IET Guidance Note 3:
   1. Electrical Installation Certificates and associated documents
   2. Minor Electrical Installation Works Certificates
5. Complete the handover of electrical systems and equipment to relevant persons including the provision of accurate and completed documentation regarding the completed inspection, testing, commissioning and customer satisfaction
6. Demonstrate to the customer/client that the operation of the circuits, equipment and components are in accordance with the installation specification and customer/client requirements

 

Learning Outcome 4

Be able to inspect, test and report on the condition of an existing electrical installation

Learning Outcome 4 must be undertaken in a real working environment on an installation having a minimum of six existing circuits that have been in operation a minimum of three years.

This assessment may be undertaken before new, additional or altered wiring is installed within the same building but is not valid if undertaken alongside an initial verification of any new parts of the installation.

Assessment criteria

1. Collate the information that is needed to enable sampling to be set
2. Agree and set samples with the client and other stakeholders based on the quality of information and systems and maintenance
3. Agree extents and limitations with client and/or other stakeholders
4. Carry out an inspection of an installation in accordance with the agreed sample, extents and limitations
5. Carry out the necessary tests of an installation in accordance with the agreed sample, extents and limitations
6. Report on the condition of an installation using the correct report codes and documentation
7. Communicate findings of report to necessary stakeholders following completion of the report

Unit 115 – Apply Fault Diagnosis and Rectification in Dwellings

Aim – This unit will enable learners to develop the competence required to diagnose and correct electrical faults in electrical systems and equipment in buildings, structures and the environment in accordance with approved industry practices, statutory and non-statutory regulations:

• The Electricity at Work Regulations
• The current edition of BS 7671
• Health & Safety at Work Act
• Building Regulations

Learning Outcome 1

Prepare to carry out fault diagnosis in dwellings

Assessment criteria

1. Check it is safe to carry out fault diagnosis
2. Inform the relevant personnel of the fault diagnosis work (such as personnel on the premises, users of electrical equipment)
3. Carry out the safe isolation procedure
4. Evaluate and apply appropriate methods to ensure the safety of themselves and others when diagnosing and correcting electrical faults

 

Learning Outcome 2

Carry out fault diagnosis in dwellings

Assessment criteria

1. Communicate effectively with relevant personnel (e.g. customer) to ascertain the nature of the fault
2. Interpret documents which relate to the electrical systems and equipment being worked upon
3. Communicate potential disruption that may be a consequence of fault diagnosis and correction work to relevant people, to include:
   1. other workers / colleagues
   2. customers / clients
4. Carry out relevant inspections of electrical equipment analysing findings
5. Confirm test instruments are fit for purpose, functioning correctly and are correctly calibrated
6. Perform suitable diagnostic tests, based on engineering decision, to identify electrical faults. Assess three from the following:
   1. loss of supply
   2. overload
   3. short-circuit
   4. earth fault
   5. high resistance joints / loose terminations
   6. component, accessory or equipment faults
   7. open circuit
7. Use appropriate methods for locating faults including:
   1. using a logical approach
   2. using safe working practices
   3. interpretation of test readings
8. Use appropriate instruments correctly to carry out fault diagnosis. Assess three of the following:
   1. voltage indicator
   2. low resistance ohmmeter
   3. insulation resistance tester
   4. EFLI and PFC tester
   5. RCD tester
   6. ammeter
   7. other appropriate instrument

 

Learning Outcome 3

Carry out fault rectification in dwellings

Assessment criteria

1. Assess the appropriate repairs, removals and replacements and their implications with relevant people. Access one of the following:
   1. other workers / colleagues
   2. customers / clients
2. Perform fault correction procedures correctly and safely using appropriate tools, equipment and material
3. Verify that replacement components and associated equipment maintain:
   1. ease of access to enable future maintenance
   2. compliance with relevant regulations
   3. compliance with manufacturer’s instructions / organisational procedures
4. Apply procedures to ensure electrical equipment and components are left safe, in accordance with industry regulations, if the fault cannot be corrected immediately based on technical assessment
5. Perform an inspection and testing procedure to confirm that circuits / equipment / components are functioning correctly after completion of fault correction work
6. Record test results and other information regarding the fault correction work clearly and accurately and report it to relevant people. Assess one of the following:
   1. other workers / colleagues
   2. customers / clients
   3. representatives of other services.