Level 3 Electrical Installation Diploma (City & Guilds 2366-03)
Take the next step toward a rewarding career as a fully qualified electrician. As Stage 2 of your training, this course builds directly on the foundational knowledge gained in Stage 1. You will advance your skills by diving into complex electrical design, advanced scientific principles, environmental technologies, fault-finding, and inspection and testing.
03/08/2026 09:00 Wolverhampton £3249.00 7 Weeks In Centre
| Date | Name | Available / Sold Out |
| 03/08/2026 09:00 | Level 3 Diploma 2366-03 | Limited Availability |
| 21/09/2026 09:00 | Level 3 Diploma 2366-03 | Limited Availability |
Call Us Today Or Enquire Now For More Course Information
Why Take the Level 3 Electrical Installation Course?
If you want to move past basic installations and bridge the gap to becoming a fully qualified professional, the Level 3 Technical Occupational Entry (2366-03) is your ideal pathway.
This modern qualification replaces the legacy 2365-03, giving you a current, respected credential that employers across the UK building services sector actively look for.
Key benefits of upgrading to Level 3:
- Advanced Competency: Master electrical design, advanced science, and complex fault diagnosis.
- Future-Proof Skills: Learn the theory behind green environmental tech and micro-renewables.
- Regulations-Focused: Study the core principles of BS 7671 so you are fully prepared for modern site requirements.
What Will I Learn On This Course?
Course Snapshot
The Level 3 Technical Occupational Entry (2366-03) blends classroom theory with intensive, hands-on workshop training. You will master advanced electrical principles and installation practices using industry-standard tools and equipment.
How you will learn and be assessed:
- Balanced Delivery: Interactive theory sessions paired with real-world practical exercises in our dedicated training bays.
- Robust Assessment: A combination of online multiple-choice examinations, written coursework, and timed practical assignments.
- Proven Competence: Every assessment is designed to ensure you confidently demonstrate both theoretical knowledge and practical skill.
Requirement
To enrol on the City & Guilds 2366-03, learners must be aged 19 or above. You will also need to hold one of the following qualifications:
- Level 2 Diploma in Electrical Installations (Buildings and Structures) (City & Guilds 2365-02)
- City & Guilds 8202 Level 2 qualification
- An equivalent Level 2 qualification from another awarding organisation in electrical installations
Important Note: This is an intensive, advanced course that builds directly on the foundational theory taught at Level 2. Learners should have a good understanding of basic electrical principles and installation practices gained through their Level 2 study.
Why take this course?
The City & Guilds 2366-03 is the newly updated, official industry replacement for the older 2365-03 diploma. It ensures your training perfectly mirrors modern technical standards, making it a highly respected and recognized qualification across the UK electrical sector.
This course is the ideal next step if you have successfully completed your Level 2 electrical training and want to formalize your advanced theory and workshop skills. It bridges the gap between basic installation and full electrician status, delivering the deeper technical knowledge in design, advanced science, and fault diagnosis required to confidently progress your career.
Course Note: While all design and practical modules are taught in strict accordance with the current BS 7671 wiring regulations, this course does not award the standalone City & Guilds 2382 (18th Edition) certification.
City and Guilds Qualifications
On successful completion of Stage 2, you will achieve the City and Guilds 2365 Level 3 Diploma in Electrical Installations
Course Content
The City & Guilds 2366-03 consists of six mandatory units. To achieve the full diploma, learners will complete a combination of online examinations, written assignments, and practical workshop assessments.
- Unit 301 – Scientific Principles: Master the complex mathematical and electrical theories underpinning advanced installation work. This includes a deep dive into modern building services, micro-renewable energy systems, and water conservation technologies.
- Unit 302 – Inspection, Testing & Commissioning: Develop the precise technical knowledge and hands-on skills required to safely inspect, test, and commission electrotechnical systems in full compliance with UK regulatory frameworks.
- Unit 303 – Fault Finding and Diagnosis: Learn practical, systematic techniques to safely isolate, diagnose, locate, and rectify electrical faults across various installation types.
- Unit 304 – Electrical Design Practices: Focus on the structural principles of installation design. You will cover essential design calculations, cable sizing, circuit layout planning, and professional documentation requirements.
- Unit 305 – Organising and Overseeing Work Activities: Build the supervisory skills needed to plan, schedule, and manage electrical jobs on-site. Covers health and safety management, resource planning, and professional collaboration.
- Unit 306 – Requirements of Electrical Installations (BS 7671): Gain a comprehensive understanding of the current wiring regulations framework. You will learn how to navigate, interpret, and directly apply these statutory standards to real-world installation scenarios.
Course Cost
The course will cost £2707.50 (£3249.00 Inc VAT)
| Date | Name | Available / Sold Out |
| 03/08/2026 09:00 | Level 3 Diploma 2366-03 | Limited Availability |
| 21/09/2026 09:00 | Level 3 Diploma 2366-03 | Limited Availability |
Course Assessments
Online Examinations Three computer-based multiple choice examinations are taken online through City & Guilds e-volve platform. The pass mark for each examination is set at approximately 60%.
Practical Assessments Two externally set practical assignments are completed and marked internally with external verification:
- Assessment 353 – Undertake Inspection, Testing and Fault Finding Procedures – This practical assignment covers Units 302 and 303, assessing the candidate’s ability to carry out inspection, testing and fault finding on electrical installations.
- Assessment 354 – Design Assignment – This externally set design exercise covers Units 301, 302, 304 and 305, assessing the candidate’s ability to apply their knowledge of electrical design practices and principles.
All assessments are available on demand through the City & Guilds e-volve platform and can be booked by the centre when the candidate is ready.
FAQ
What is the City & Guilds 2366-03 qualification?
The 2366-03 is the Level 3 Technical Occupational Entry Diploma in Electrical Installation. It is the official, newly updated industry replacement for the older, legacy 2365-03 course, ensuring your training reflects the absolute latest technical standards.
Does completing the 2366-03 make me a fully qualified electrician?
No. To become fully qualified and earn your ECS Gold Card, you must complete this classroom/workshop technical diploma, progress to a work-based Level 3 NVQ to prove your competence on-site, and pass the AM2 practical assessment.
What are the entry requirements for this Level 3 course?
You must be 19 or older and hold a verified City & Guilds 2365-02 (Level 2) qualification or an exact equivalent electrical installation diploma. Because this course jumps immediately into advanced electrical science and complex circuit calculations, general site experience or qualifications in other trades cannot be accepted as a substitute.
Is the official 18th Edition (C&G 2382) qualification included?
No. While all advanced design, testing, and practical modules are taught in strict accordance with the current BS 7671 wiring regulations, this diploma does not award the separate, standalone City & Guilds 2382 certification. Most students choose to complete the 18th Edition as a short standalone course alongside or immediately after this diploma.
How is the 2366-03 course assessed?
Assessment is split across three online multiple-choice exams via the City & Guilds e-volve platform, one formal written design assignment, and one comprehensive hands-on practical assignment covering advanced inspection, testing, and fault-finding carried out in our training bays.
What is my next step after passing the Level 3 diploma?
Once achieved, you are ready to move onto the work-based NVQ Level 3 and the AM2 assessment. Our dedicated placement team works closely with graduates to help connect you with local employers and secure the on-site work placements needed to complete your NVQ portfolio.
If you have any other questions, please don’t hesitate to contact us—we’re here to help!
Why choose us for your electrical training
Sir Laethian & Steve
Laethian is brilliant tutor and taught me so much durring the 4 weeks and feel confident to go out and carry out domestic electrical installs. He also is down to earth easily approachable if you don't understand something. Also you can have banter,..
Lee Lavender, 04 April 2025
Just finished my level 2
Just finished my level 2, the support and teaching was second to none! The tutors were more the helpful more so leathian went the extra mile for the students and myself, malcom to and josh is already finding me job opportunities. Highly recommend! And grateful for everything!
Ed wilkes, 05 April 2025
I signed up for the NVQ with Elec…
I run a company that helps people develop a new route for work, from the Performing Arts to Military or Professional Sports. I referred a candidate to Elect Training, who were brilliant. The training was excellent and the aftercare, particularly from Josh...
Carole davies, 01 April 2025
I signed up for the NVQ with Elec…
I signed up for the NVQ with Elec Training based on their promise to help me find employment to complete my qualification—and they delivered exactly as they said they would! Not only have I secured a new job after my hours were reduced with my previous company, but I’m now working with...
Scott, 27 March 2025
Looking for a new career
Having left the military and looking for a new career, I wanted to build on the skills I gained during my service. I always enjoyed the electrical aspects of my job, which led me to choose the Level 2 2365 course with Elec Training. Laethian was an amazing
Joshua, 25 March 2025
I’ve been in construction since I was a…
I’ve been in construction since I was a teenager, working as both a machine driver and groundworker over the years, but I’ve always had an interest in electrics. Without qualifications, it was difficult to find a way into the electrical industry—until I came across Elec Training.
Cochior Radu, 20 March 2024
Amazing trainer
Just finished my level 2 with elec training,I was a bit nervous to begin with as I didn’t no anything about being an electrician and also my age as I knew I would of been one of the oldest in the class but my trainer laethian was amazing with me and the rest of the lads, the way he delivered the therory...
Abdul Kalam, 18 March 2025
Best training company by far..
After gaining valuable qualifications (level 2 and 3, 18th and 2391) I was finding it quite difficult to get employment/placement to start my NVQ.. After reading all the excellent reviews about this company I thought I'd join them as it stated they find you...
Leon, 10 December 2025
Thank you Elec training
Thank you Elec training, because of you im now in work and working towards my NVQ. Big thanks to josh for sorting me a job in London, couldnt of done it without the help. Really apreciate everything you guys done for me. Kind regards, Muzamel
Muzamel, 26 November 2025
Thank you
Despite being based in Stockport, I was placed with a local company and can now start working towards my NVQ. A big thank you to all the trainers who supported me in achieving my Level 2, Level 3, and 18th Edition qualifications. And a special thanks to Laethian,...
neild, 25 November 2025
Was a pleasent experience with elec…
Was a pleasent experience with elec training, the people were nice and friendly and working with Liam to secure me a role was great, I would recommend them for anyone looking to get qualified
Mitch Aspinall, 25 November 2025
Was a pleasent experience with elec…
Liam was brilliant in finding me a placement. Found me a placement to walk straight into once I finished, and was in constant conversation with me through the whole process. Couldn’t have been better!
Oliver MacDonald, 17 November 2025
Excellent Experience and Career Start
A huge thank you to Elec Training! You’ve not only helped me launch my career in electrics, but I’m now Level 2 qualified and have my 18th Edition certification. Josh found me a great placement with a London company that suited my work situation perfectly....
raval manoj, 7 November 2025
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Get In Touch
Feel free to contact us at any time. We would love to hear from you.
- 033 0822 5337
- Elec Training, Thomas Street, Wolverhampton, West Midlands, WV2 4BY
- The Faraday Campus, 1b Ward St, Wolverhampton WV1 3LT
