The Level 3 Diploma in Electrical Installation

The Level 3 Diploma in Electrical Installation is an advanced course designed to enhance the skills and knowledge of electricians, focusing on complex installation techniques and compliance with industry standards, preparing participants for more challenging roles in the electrical industry.

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The Level 3 Diploma in Electrical Installation

The Level 3 Diploma is the industry recognised route to continuing on your journey to 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. After completing this course, you can proceed to the Level 3 NVQ portfolio, also referred to as the bridging unit. This will enable you to apply for JIB (Gold Card) membership, contingent upon successfully completing the AM2.

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COURSE DETAILS

  • C&G 2365-03: Level 3 Diploma in Electrical Installations

  • 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.

  • 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.

  • 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.

  • 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.

  • Most questions can be answered by visiting our frequently asked questions page

    https://www.optima-ect.com/faqs

  • 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

 

Course Breakdown

  • Course Code: C&G 2365-03 Level 3 Diploma in Electrical Installations

  • Duration: From as little as 15 weeks

  • E-Learning & Tutor-Led Options Available

  • Course Fees: From £2,495 - £3,995. Prices vary based on delivery method and location.

Why Take This Course of Study?

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 qualification has been designed to develop a deeper understanding of electrical installation design, inspection and testing, fault diagnosis, and the regulations governing electrical installations. The award consists of the following elements of study:

  • Principles of Planning and Selection for Electrical Installations

  • Installation Design

  • Inspection, Testing and Commissioning of Electrical Installations

  • Fault Diagnosis and Rectification

  • Electrical Science and Principles

  • Environmental Technology Systems

  • Understanding the Requirements of BS 7671

  • Understanding Electrical Industry Practices and Procedure

On completion of this course, you will have gained the necessary knowledge and skills to become confident in your ability to:

  • Design electrical installations in accordance with industry standards and regulations

  • Interpret electrical drawings, specifications, and technical information

  • Inspect, test, and commission electrical installations

  • Diagnose and rectify faults in electrical systems

  • Apply the requirements of BS 7671 to electrical installations

  • Select appropriate equipment and protective devices

  • Understand energy efficiency and environmental technologies

  • Produce electrical certification and documentation

  • Work safely and effectively within the electrotechnical industry

Practical Training

Although the Level 3 Diploma is primarily theory-based, learners will also undertake practical assessments covering:

  • Initial Verification

  • Inspection and Testing

  • Fault Finding and Diagnosis

These assessments are designed to develop the practical skills required before progressing onto the NVQ and AM2 stages of qualification.

Where Can I Work Upon Completion of This Programme?

The Level 3 Diploma is widely recognised throughout the electrical industry and demonstrates a high level of technical knowledge and understanding. Upon completion, learners are typically employed in roles such as:

  • Electrical Improver

  • Trainee Electrician

  • Installation Electrician (under supervision where required)

  • Maintenance Electrician

  • Building Services Engineer

  • Electrical Testing Assistant

  • Facilities Maintenance Technician

The Level 3 Diploma is often regarded as the academic qualification required to progress towards becoming a fully qualified electrician. However, to achieve recognised qualified electrician status, learners must also complete the Level 3 NVQ in Electrical Installation and successfully pass the AM2 Assessment.

Progression Opportunities

Successful completion of the Level 3 Diploma allows learners to progress onto:

  • C&G 2357 Level 3 NVQ Diploma in Electrotechnical Services

  • C&G 2346 Experienced Worker Assessment (where applicable)

  • C&G 2391-52 Inspection and Testing

  • C&G 2396 Design and Verification

  • EV Charging Qualifications

  • Renewable and Environmental Technology Qualifications

Following completion of the Level 3 NVQ and AM2 Assessment, learners can apply for an ECS Gold Card, demonstrating their status as a fully qualified electrician and opening up a wide range of employment and self-employment opportunities within the electrical industry.

Delivery Options

We understand that our learners have different commitments, which is why we offer a range of flexible study options designed to fit around work, family, and existing responsibilities.

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

Regardless of your chosen study method, all learners will attend practical workshop sessions to develop the hands-on skills required by the qualification. Workshops are delivered in our fully equipped training centres and are designed to prepare you for both assessments and real-world electrical installation work.

Which Option Is Right for You?

Whether you are looking for a complete career change, upskilling for employment, or taking your first steps into the electrical industry, our admissions team can help you choose the delivery option that best suits your circumstances and goals.

Payment plans

We recognise that paying for some of our courses all at once can be challenging. Therefore, on our more extended programmes, you have the opportunity to earn while you learn. This means you can make interest-free weekly or monthly payments, which has proven beneficial for numerous students in successfully completing their courses while managing their finances effectively.

Enrolment Form

Sign up today without immediate payment. Simply fill out the enrolment form, and a course advisor will contact you to discuss payment arrangements.


Speak with one of the team

Interested in talking to someone? Whether it's about payment plans, course dates, or anything else, just click on 'Request Information' and fill out the form. Our dedicated course advisors are ready to address your enquiries and answer any questions. Alternatively, you're welcome to call us on our freephone +44 800 037 1572.