UNIT 115

For The 2347-03 EWA

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 Outcomes

This unit is comprised of the following THREE Learning Outcomes – full details below.

LO1 – Prepare to carry out fault diagnosis in dwellings
LO2 – Carry out fault diagnosis in dwellings
LO3 – Carry out fault rectification in dwellings.

Evidence Requirements

For ALL Learning Outcomes 1-3

You must provide auditable evidence sourced from a real working environment to illustrate that you can apply fault diagnosis and rectification in accordance with the assessment criteria for each of the learning outcomes.

There is an emphasis placed on the necessity to keep up to date with the latest standards, technologies and practices which relate to and affect the topics covered in this unit. This is in keeping with good industry practice.

You personally should be in as many photos/videos as possible.

Unit 115 – Apply Fault Diagnosis and Rectification in Dwellings

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.