UNIT 115

For The 2346-03 EWA

Apply Fault Diagnosis and Rectification

For Learners on Installation or Maintenance Pathways

Aim

This unit is designed to enable the learner to develop the skills required, and apply the associated knowledge, in order that they are able to demonstrate 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
LO2 – Carry out fault diagnosis
LO3 – Carry out fault rectification

Evidence Requirements

For ALL Learning Outcomes 1-3

Auditable evidence sourced from a real working environment must be provided to illustrate that you have demonstrated on two separate occasions, that you can carry out procedures, for fault diagnosis and rectification of electrical systems and equipment, in accordance with the assessment criteria.

In the delivery of this unit, an emphasis shall be made 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 then in keeping with good engineering practice.

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

Unit 115 – Apply Fault Diagnosis and Rectification

Introduction

On this page we walk you through everything you need to know to get started – and complete – Unit 115 of your 2346 EWA

What is Assessment Criteria?

This is the criteria you are being assessed against. In order to successfully complete the assessment, you must meet the criteria in EVERY unit.

How do I meet the Assessment Criteria of every unit?

You will simply provide evidence (photos) of HOW you carried out your duties.

This unit is about you working safely whilst carrying out your electrical installation or maintenance duties. You must provide evidence that you have carried out a risk assessment BEFORE you started work, review your working area DURING your working day, and tidied up upon completion of the job. You need to demonstrate that you have used access equipment safely and are dressed in the appropriate PPE.

See an overview of this unit’s assessment criteria and examples of evidence below.

You need to be in the Photos.

Learning Outcome 1

Prepare to carry out fault diagnosis

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

Photo evidence required

Learning Outcome 2

Carry out fault diagnosis

Assessment criteria

  1. Communicate effectively with relevant personnel (e.g. customer, premises manager) to ascertain the nature of the fault
  2. Select and interpret appropriate documents (e.g. layout drawings, schematic diagrams etc) which relate to the electrical systems and equipment being worked upon
  3. Assess and communicate potential disruption that may be a consequence of fault diagnosis and correction work to relevant people, such as:
    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. incorrect phase rotation
    6. high resistance joints / loose terminations
    7. component, accessory or equipment faults
    8. open circuit
    9. signal faults
  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. Phase rotation tester
    8. Other appropriate instrument

Photo evidence required

Learning Outcome 3

Carry out fault rectification

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. Assess & 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 appropriate 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. Establish and perform an appropriate 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 appropriate 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.

Photo evidence required