2391-51 Inspection & Testing Course




5 days


C&G 2391-51


The Builder Training Centre (The BTC) offers high quality structured 2391 Periodic Inspection and Testing Courses. These can be attended as a 5 day weekday course or, for those that have commitments during the week, over 2 consecutive weekends (1 weekend being an extended weekend).

Our instructors are qualified, highly experienced, knowledgeable and enthusiastic Tradespersons, so students can take full advantage of all the tips of the trade, personal experiences and practical advice they offer. This short course is intensive, but no compromise is made on the course content. The atmosphere is relaxed and enjoyable which creates a good learning environment.

The City & Guilds 2391-51 is designed for anyone who is required to conduct Periodic Inspection and Testing of electrical Installations. This theory course is ideally suited for students who have previously gained qualifications in initial verification and wish to expand their skills to include reporting on the condition of existing electrical installations. You will need to have previous experience and fundamental knowledge of inspecting and testing of single and ideally 3 phase electrical installations. You will need to have obtained previous electrical qualifications, able to work with minimal supervision, work safely, able to identify faults and ensure all your work meets the required standards. This course will enable you to update your knowledge of techniques and legislation and gain the relevant qualification to reflect your abilities.

Course Content

Tasks will include:

  • Requirements for periodic inspection and testing
  • Safety management procedures when undertaking periodic inspection and testing
  • Requirements for the periodic inspection of an electrical installation
  • Requirements for testing electrical installations during periodic inspection and test
  • Perform periodic inspection and testing of electrical installations
  • Sample papers will be undertaken throughout the course

In order to claim the full 2391-51 qualification students must successfully complete the following 2 units:

  • On-line multiple choice (open book) test – 90 minutes, (40 questions) (unit 2391-051). Results the same day.
  • Practical assessment (unit 2391-501) arranged separately – 2½ hours, including completion of associated documentation, and 1 hour for completion of Practical Written Assignment (4 question short answers – open book).

Training Facilities

Upcoming Courses

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Please click the button below to proceed with our online Application Form. You will be given details on the Application Form about how to make the minimum deposit payment of £200.00, or the full amount of £705.00, to secure a place on your chosen date.

Alternatively, give us a call on 020 8649 9340 to get booked in over the phone.


IET On-Site Guide (BS 7671:2018+A2:2022), 8th Edition
 ISBN 978-1-83953-227-6
IET Wiring Regulations 18th Edition BS 7671:2018+A2:2022

ISBN 978-1-83953-218-4
IET Guidance Note 3: Inspection & Testing, 9th Edition
ISBN 978-1-83953-236-8
(Available for purchase at The BTC – Subject to availability)

Steel toe-capped safety footwear is a health and safety requirement for all our courses. We stock steel-toe capped boots from size 3 to 13 (with some half sizes), which can be purchased on the first morning of your course for just £20.00. You should wear suitable comfortable clothing.

You are welcome to bring your own food to eat in our centre. Alternatively, we sell a small selection of hot and cold drinks and snacks in our canteen, or you could purchase food from one of the local supermarkets/shops/cafes/restaurants within just a few minutes’ walk.

Most students also find it beneficial to bring Post-it notes or sticky tags, which they can use to separate their books into sections. Additionally, a pen and a non-programmable calculator are permitted for the exam.

You need to meet two requirements: be at least 18 years old and stay updated with industry standards. This program is specifically designed for electricians already engaged in the field who have successfully completed relevant formal training and possess experience in inspection and testing. Additionally, candidates should have knowledge and practical experience in three-phase testing.

We offer a two-day Advanced Inspection & Testing course for individuals with no three-phase experience.

It is highly recommended that candidates hold at least one of the following qualifications before enrolling:

2392 Inspection & Testing
2365 Level 2 & 3

The content and total hours of the course are the same. Additionally, it is usually the same tutor who conducts the course. However, please note that the weekend courses start at 8.30 am instead of 9 am to maintain consistency with our other weekend courses.

If you meet the pass criteria of the assessments, you will be awarded the following qualification certificate:

City & Guilds Level 3 Award in Periodic Inspection (2391-51)

As we are located within Waddon Train Station Buildings, we do not have any parking on-site. That said, there are plenty of residential roads in the surrounding area that have free unrestricted parking, within just a few minutes’ walk. If attending on Sunday, you can park in the marked red boxes in Epsom Road where our Centre at Waddon Station is situated and in Stafford Road where our Electrical Centre is situated (a minute’s walk away) all day free of charge.

Please email info@thebtc.co.uk if you would like any further information or instructions.


Our training facility is located at the following address:
Waddon Station Buildings, 160 Epsom Road, Croydon, CR0 4UP

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"Very professional centre with friendly and helpful staff. Richard is very knowledgeable and has the ability to explain complex things in a simple manner. Recommend to friends and colleagues. Great information on course provided by Sally over the telephone."
Abdus Samad
"Very satisfied with what I have learned. Probably one of the best Training Centres around and the instructor was excellent"
David Heath
"I have been at the centre back in 2011 for 17th Edition, hence my visit back after 7 years. As predicted, exceptional training layout. Richard very knowledgeable course tutor."
Luke Brzeski