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EAL L3 Diploma in Electrotechnical Services
Experienced Worker Assessment Route
Mature Candidate Assessment Scheme (MCAS)



What is this qualification?
This qualification is an assessment process designed for experienced workers, who have been working within the electrotechnical industry for a number of years and wish to demonstrate their technical knowledge, performance and competence to the industry standard level 3 and in line with the current edition of the IET Wiring Regulations BS 7671.

Candidates who successfully complete the experienced worker assessment and the AM2 will meet the requirements to be eligible to apply for an Installation Electrician ECS Card from the JIB.


Who is this qualification for?
Experienced operatives who are/have been working in the electrotechnical industry as practicing electricians for a number of years
Those who wish to have their competencies recognised by the JIB and hold an ECS card.

How we assess this qualification:

We offer two schemes to gain this qualification for further information please click here.

All units must be completed and the following photographic evidence obtained:

ET3-001 Ensure Safe Site Working

  • Working with relevant people; customers, colleagues, supervisors, clients, other contractors and charge hands
  • Safe systems of work; safe isolation, PPE, permits to work, method statements
  • Working conditions; confined spaces, residential, commercial
  • Access Equipment; ladders, system scaffolding, trestles, powered platforms


ET3-002 Provide Technical and Functional Information

  • Working with relevant people; customers, colleagues, supervisors, clients, other contractors and charge hands
  • Technical and functional information; installation specifications, user instructions, manufacturers data
  • Installation/system or equipment; lighting and control, power, multi-phase, ELV, LV single-phase
  • Equipment; luminaires, switchgear and distribution panels, components and accessories, control systems and components, motors and starters, electrical plant.



ET3-004 Maintain a Healthy and Safe Working Environment

  • Working practices; activities, working techniques, procedures, use of materials or equipment.
  • Other persons; customers, colleagues, supervisors, clients, other contractors, charge hands.
  • Working environment; confined spaces, residential, commercial.
  • Systems; lighting and control, power, multi-phase, ELV, LV single-phase


ET3-011 Diagnose and Correct Faults in Electrotechnical Systems and Equipment

  • Faults; overload, open circuits, sensitive RCDs, incomplete rings, earth leakage, short circuits, high resistant joints
  • Safe working practices; safe isolation, PPE, permits to work, method statements
  • Equipment; luminaires, switchgear and distribution panels, components, control systems, electrical plant.
  • Systems; lighting and control, power, multi-phase, ELV, LV single-phase.



ET3-012 Prepare to Install Electrical Wiring Systems, Wiring Enclosures and Equipment

  • Working conditions; inside and outside
  • Wiring systems; MIMS, PVC/SWA, PVC singles, PVC twin
  • Wiring enclosures; PVC conduit, steel trunking, steel conduit, cable tray, PVC trunking, basket system.
  • Equipment; luminaires, switchgear and distribution panels, components, control systems, electrical plant.


ET3-013 Install Electrical Wiring Systems, Wiring Enclosures and Equipment

  • Systems; lighting and control, power, multi-phase, ELV, LV single-phase.
  • Wiring systems; MIMS, PVC/SWA, PVC singles, PVC twin
  • Wiring enclosures; PVC conduit, steel trunking, steel conduit, cable tray, PVC trunking, basket system.
  • Equipment; luminaires, switchgear and distribution panels, components, control systems, electrical plant.

ET3-014 Connect Wiring Systems and Equipment using Safe and Approved Methods
  • Wiring systems; MIMS, PVC/SWA, PVC singles, PVC twin
  • Equipment; luminaires, switchgear and distribution panels, components, control systems, electrical plant.


ET3-015 Inspect, Test and Commission an Electrical Installation

  • Working with relevant people; customers, colleagues, supervisors, clients, other contractors and charge hands
  • Required tests; continuity of CPC, insulation resistance, Earth fault loop impedance, continuity of ring final conductors, polarity, operation of RCDs.


EOC3/001 Electrotechnical Occupational (AM2 Practical Exam)


Where “Expert Witnesses” are used in the assessment process they must be:

  • Sector competent individuals who can attest to the learner's performance in the workplace.
  • A qualified assessor must assess the performance evidence provided by an expert witness.
  • Evidence from expert witnesses must meet the tests of validity, reliability, authenticity and sufficiency.



Expert witnesses will need to demonstrate:

  • they have relevant current knowledge of industry working practices and techniques,
  • they have no conflict of interest in the outcome of their evidence.


The candidate will also be expected to demonstrate acceptable knowledge of the current industry requirements with respect to the IET Wiring Regulations and inspection and testing. Candidates must also be able to provide sufficient valid and authentic evidence from site of their previous work to demonstrate that they can fully meet the performance requirements within each unit of this qualification

Please note:

This assessment is not suitable for new entrants to the electrotechnical industry, apprentices or other trainees who require any training.​