Advanced Inspection & Testing (Three Phase) Course




2 days




The Builder Training Centre (The BTC) offers a high quality structured Advanced Inspection & Testing Course. This can be attended over 2 consecutive weekdays

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.

This 2 day Advanced Electrical 3 Phase Inspection and Testing Course at The Builder Training Centre is aimed at students who are looking to enhance their existing Inspection and Testing skills to include 3 phase systems.

Previous Inspection and Testing experience is required for this course. This may have been gained by work-related requirements or by attending either the Part P Domestic Installers Qualification Course or the City & Guilds 2392 Initial Inspection and Testing of single phase installations Qualification Course. 

This course is ideal for anyone looking to attend the City & Guilds 2391-50, City & Guilds 2391-51, City & Guilds 2391-52 or EAL 2625 Electrical Qualification Course who has limited or no previous 3 phase practical experience.

You will be tasked with undertaking a full inspection and test of a 3 phase installation to include the various tests required on both 3 line and single line circuits. Your tutor will talk you through each step and then you will put the training into practice on pre-configured boards. Once completed, you will learn how to correctly complete all the required certificates and associated documentation for both Initial and Periodic Inspection and Testing. You will then be tasked with completing the process with minimal supervision to ensure any gaps identified are discussed and rectified. You will also work on some rigs with pre-installed faults to enable you to enhance your learning should you intend conducting Periodic Inspection and Tests in the future.

Course Content

Tasks will include:

  • Safe Isolation Procedures
  • Correct Identification of three line and single line circuits
  • Correct use of human senses when conducting Inspection
  • Correct use of instruments
  • Continuity of Protective Conductors (Earthing Conductors, Protective Bonding Conductors and CPCs)
  • Ring Circuit Continuity
  • Figure of 8 tests
  • R1 + R2
  • Insulation Resistance
  • Polarity
  • Earth Fault Loop Impedance (Zs & Ze)
  • Prospective Earth Fault Current (PEFC)
  • Prospective Short Circuit Current (PSCC)
  • RCD Testing
  • Phase Rotation
  • Fault Finding Techniques
  • Correct completion of EIC (Electrical Installation Certificate) and associated documentation
  • Correct completion of EICR (Electrical Installation Condition Report) and associated documentation

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 £150.00, or the full amount of £250.00, to secure a place on your chosen date.

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


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 that you do not mind getting dirty.

We provide all relevant tools and materials that are required for the duration of your course.

Changing facilities for men and women are available on-site.

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

Candidates are required to have prior Inspection & Testing experience before attending this course. This course is ideal for individuals who have experience with single-phase Inspection & Testing and are looking to expand their skills.

You are required to be aged at least 18 years and deemed fit and healthy to complete physical work. Whether your background is already in a trade or something completely different, these skills can be learnt and applied directly after the course.

You will be awarded a Builder Training Centres Limited Certificate of Continuous Professional Development after full completion of the course. The Certificate will include your name, the dates you attended, and on the reverse we list all the areas you have covered throughout your course.

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 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

Related Courses

2391-52 Inspection & Testing (C&G 2391-52)

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2625 Inspection & Testing (EAL 2625)

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Inspection & Testing Foundation

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"Again I am very happy with the outcome of the course. I feel home at the BTC. The teacher very helpful."
Raul Parlatto
"Overall excellent instruction & value. Helpfulness from all staff. Michael rates as an excellent tutor. I would and have recommended others."
Steve Procopis
(Tyne & Wear)
"Came in with zero confidence of testing and came out with really good knowledge and confidence of how to test."
Mihail Ekonomide