The Level 3 Diploma in Electrical Installation
The industry recognised route to get on your way to becoming a fully qualified electrician, making you eligible to work in the domestic, commercial and industrial sectors.
The industry recognised route to becoming a fully qualified electrician, eligible to work in the domestic, commercial and industrial sectors.
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The next step towards becoming a fully qualified electrician
The Level 3 Diploma in Electrical Installations builds upon the knowledge and practical skills gained during the Level 2 Diploma and is the next step towards becoming a fully qualified electrician.
This course will provide the eligibility for you to work in the domestic, commercial and industrial sectors.
Who is this course for?
The City & Guilds 2365 Level 3 Course is ideally suited for those who have finished the Level 2 Diploma 2365 course or similar level 2 qualifications.
Level 3 Diploma pricing
Two ways to study the C&G 2365-03 Level 3 Diploma. Choose the delivery that fits your schedule.
Classroom-based
Level 3 Diploma, C&G 2365-03- City & Guilds recognised qualification
- 15–20 weeks (fast-track from 6 weeks)
- Covers Units 301–305 and 308
- Interest-free payments available
eLearning
Level 3 Diploma, C&G 2365-03- City & Guilds recognised qualification
- Study around work and family
- Practical workshops included
- Interest-free payments available
Interest-free payments
Earn while you learn. Spread the cost of your training with an interest-free payment plan, requested as part of the enrolment process. Prefer to pay upfront? Enrol and pay in full through our online store.
- Interest-free payment plans
- Typical approval within 30 minutes
- No hard credit checks
Optima Reviews
"Great course with lots of friendly and helpful staff. Would definitely book to do further courses with them in the future."
"It was a wonderful experience and I am honored to complete the NVQ Level 3 and Level 2 at Optima College. The treatment was excellent from Mr. James Ross also my assessor Muztaba. I recommend it as a place to complete your education. From the bottom of my heart, thank you Optima team."
"Highly recommend Optima Electrical Training to anyone looking to build a strong foundation in electrical installation. Very structured approach, excellent teaching, and supportive environment make them a top choice for professional training."
"Best training I have ever had doing an BS7671 update for the requirements for Electrical Installations. Would highly recommend Optima Electrical Training."
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Level 3 Diploma FAQs
Everything you need to know before you enrol.
Who is this course for?
The C&G 2365-03 Level 3 Diploma is aimed at electricians who have completed their Level 2 and are looking to enhance their skills and knowledge, focusing on complex installation techniques and compliance with industry standards.
You can study the same qualification in the way that suits you — classroom-based with a City & Guilds instructor at our London centre, or eLearning at your own pace with practical workshops scheduled at your convenience.
Will my qualification be recognised?
Yes. The Level 3 Diploma is a City & Guilds qualification — recognised across the UK electrical industry.
Both delivery formats (classroom and eLearning) lead to the same C&G 2365-03 certification.
What is the usual pass rate?
We consistently achieve industry-leading pass rates on the Level 3 Diploma.
How long does the course take?
The C&G 2365-03 Diploma typically runs for 15–20 weeks, with fast-track completion possible in as few as 6 weeks.
Delivery options:
- Weekday classes: Monday to Thursday, 9:30am to 3:30pm
- Evening classes: Monday to Thursday, 6:30pm to 9:30pm
- Weekend classes: Saturday and Sunday, 9:30am to 3:30pm
- eLearning: Self-paced online study — start anytime, with scheduled practical workshops at our London centre
How do I pay for my training?
Earn while you learn. Spread the cost of your training with an interest-free payment plan, requested as part of the enrolment process.
- Interest-free payment plans — no interest added on top of your course fees
- Typical approval within 30 minutes of submitting your request
- No hard credit checks — your credit score is not affected
You can also pay the course fee in full at enrolment if you prefer. Speak to a course advisor to walk through the options for your preferred delivery format.
Still have a question? Speak to a course advisor.
📞 Call 0330 330 8489
Choose the delivery that fits your schedule
The C&G 2365-03 Level 3 Diploma in Electrical Installations is available as classroom-based training or self-paced eLearning. Both lead to the same City & Guilds qualification — pick the format that works for you.
Classroom — C&G 2365-03
An advanced course designed to enhance the skills and knowledge of electricians, focusing on complex installation techniques and compliance with industry standards. Study face-to-face with a City & Guilds instructor at our London training centre.
- Covers Units 301–305 and 308
- 15–20 weeks (fast-track from as few as 6 weeks)
- Pass rate over 95%
- Weekday, evening and weekend classes available
- Interest-free payment plans available
eLearning — C&G 2365-03
The same City & Guilds Level 3 Diploma delivered online, with in-centre practical workshops scheduled at your convenience. Not restricted to standard start dates — begin studying when you're ready and fit your learning around work and family commitments.
- Covers Units 301–305 and 308
- Self-paced online study — start anytime
- Practical workshops included at the training centre
- Pass rate over 95%
- Interest-free payment plans available
The road to becoming a fully qualified electrician
Each stage in order — from your very first diploma through to ECS Gold Card status.
Level 2 Diploma in Electrical Installations
A structured, step-by-step route into the industry — building your knowledge and confidence from the ground up.
Level 3 Diploma in Electrical Installations
The next stage of the diploma route, advancing your knowledge toward qualified competence.
18th Edition BS7671 Wiring Regulations
The current UK wiring regulations every practising electrician works to.
Inspection & Testing
Inspection and testing of electrical installations.
NVQ Level 3 in Electrical Installation
Completed through on-site assessments to prove competence in the workplace.
AM2 Assessment
The end-point assessment on the pathway to full qualification.
ECS Gold Card Status
Recognised occupational certification for electrotechnical workers in the UK — you're now a fully-qualified electrician.
COURSE DETAILS
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C&G 2365-03: Level 3 Diploma in Electrical Installations
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Unit 301 – Understand the Fundamental Principles and Requirements of Environmental Technology Systems.
Unit 302 – Principles of Electrical Science. (Science L3)
Unit 303 – Electrical Installation: Fault Diagnosis and Rectification.
Unit 304 – Electrical installation: Inspection, Testing and Commissioning.
Unit 305 – Electrical Systems Design.
Unit 308 – Career Awareness in Building Services Engineering.
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The criteria / method of assessment varies from unit to unit. Most units have an exam (written and/or online) and others have practical assessments. Your lecturer will notify of you which is required enabling you to adequately prepare for that particular unit.
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The Level 3 course is part of our intensive programme, designed to be fast-paced and delivered over 15 to 20 study weeks. We offer three flexible delivery options to suit your schedule: weekdays, weekends, or evenings, as detailed below:
Weekdays
Monday and Tuesday: 9:30am – 3:30pm
Wednesday and Thursday: 9:30am – 3:30pm
Evenings
Monday and Tuesday: 6:30pm – 9:30pm
Wednesday and Thursday: 6:30pm – 9:30pm
Weekends
Saturday and Sunday: 9:30am – 3:30pm.
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Autumn Term 2026 - All Centres
05.09.26 - Weekends (Saturday & Sunday: 9:30am - 3:30pm)
07.09.2026 - Weekdays (Monday & Tuesday: 9:30am - 3:30pm)
07.09.2026 - Evenings (Monday & Tuesday: 6:30pm - 9:30pm)
E-learning options can be started at any time, with practical workshops scheduled at a time that is convenient for you, and are not restricted to the dates mentioned above.
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You can now apply for an interest free flexible payment plan by visiting: Request a payment plan
Applying for this payment plan takes around 2 minutes, and decisions are made swiftly, with learners typically receiving notifications within 30 minutes. It's important to note that no hard credit checks will be conducted, and your credit file will not be affected by the application.
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Most questions can be answered by visiting our frequently asked questions page
https://www.optima-ect.com/faqs
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You can access our learner handbook by clicking the following link. Here, you'll find all the information you need as a learner and new member with us.
https://www.paperturn-view.com/?pid=MTA107143
Delivery options
Study the way that works for you — every route includes hands-on practical workshops.
Weekend Classes
Ideal for those working full-time during the week.
- Tutor-led online theory sessions
- Practical workshops scheduled at key stages throughout the course
- Classes typically delivered on Saturdays and Sundays
- Popular with career changers and employed learners
Evening Classes
Perfect for learners who need to study outside of working hours.
- Live online tutor-led sessions
- Evening classes held during the week
- Flexible learning around employment and family commitments
- Access to recorded resources and online learning materials
Weekday Classes
Our fastest structured route for those able to dedicate time during the week.
- Intensive tutor-led learning
- Accelerated progression through the qualification
- Ideal for learners seeking a quicker route into the electrical industry
Distance Learning (eLearning)
Study at your own pace from anywhere in the UK.
- Access to comprehensive online learning materials
- Complete theory units at a pace that suits you
- Attend practical workshops and assessments when required
- Supported by experienced tutors throughout your studies
Practical Workshops
For every study method.
- Regardless of your chosen study method, all learners will attend practical workshop sessions to develop the hands-on skills required by the qualification.
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What is the course completion duration, and what is the pass rate?
The pase rate is currently over 95%, and this course can be completed in as few as 6 weeks.
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Do you offer this course as an e-learning programme?
Yes, we offer the Level 3 as an e-learning or tutor led course, both with in centre practial workshops scheduled at your convenience.
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Is this programme accredited by an awarding body?
C&G 2365-03 holds City & Guilds accreditation and is widely acknowledged within the industry.
Course details
Course code & breakdown
C&G 2365-03: Level 3 Diploma in Electrical Installations
Duration: From as little as 15 weeks · Delivery: E-Learning & Tutor-Led options available
Course units / modules
- Unit 301Understand the Fundamental Principles and Requirements of Environmental Technology Systems
- Unit 302Principles of Electrical Science (Science L3)
- Unit 303Electrical Installation: Fault Diagnosis and Rectification
- Unit 304Electrical Installation: Inspection, Testing and Commissioning
- Unit 305Electrical Systems Design
- Unit 308Career Awareness in Building Services Engineering
Exams & assessments
The criteria / method of assessment varies from unit to unit. Most units have an exam (written and/or online) and others have practical assessments.
Flexible payment options
You can now apply for an interest free flexible payment plan, with decisions typically within 30 minutes and no hard credit checks conducted.
Why train with us?
We take pride in being a family-run business with a track record of delivering courses for over two decades. With an impressive pass rate and our ongoing investments in our centres and facilities, we are confident that your choice in selecting us will be met with satisfaction.
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