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C&G L3 Diploma Electrical Installations

student at a workbench holding a screwdriver and working with a plug socket.

Course overview

The City & Guilds Level 3 Diploma in Electrical Installations is designed for students who want to progress towards a career as a qualified electrician. Building on previous learning, this course develops your technical knowledge, practical ability and understanding of how electrical systems are designed, installed, tested and maintained in real buildings.

You’ll gain the skills and knowledge employers expect, helping you prepare for employment, an apprenticeship or further industry training within the electrical sector.

Studying at Level 3 helps you:

  • Take your electrical knowledge to an advanced level

  • Develop skills required for professional electrical work

  • Understand industry standards and regulations

  • Improve your progression into employment or apprenticeships

  • Build confidence working with complex electrical systems

This C&G Level 3 Diploma in Electrical Installations course is ideal for learners who are serious about becoming an electrician and progressing within the building services industry.

Course information

Throughout the course, you’ll study a range of advanced, industry-relevant topics, including:

Principles of electro-technology – understanding how electrical systems and components work

Environmental technology – exploring energy efficiency and sustainable electrical solutions

Advanced principles of electrical science – developing deeper technical understanding

Inspection, testing and commissioning – learning how to check systems are safe, compliant and working correctly

Fault diagnosis and rectification – identifying and fixing electrical problems

Electrical system design – understanding how systems are planned and designed for different buildings

Carrier awareness in building services engineering – learning about roles, responsibilities and progression routes

BS 7671 Wiring Regulations (17th Edition) (optional additional unit) – developing knowledge of key industry regulations

These units help you understand not just how electrical systems work, but why they are designed and installed in certain ways.