The 18th Edition Exam

The City and Guilds 2382-22 is the qualification which covers the Wiring Regulations for Electrical Installers.

The 18th edition exam is a 2 hour 60 question online exam. In order to pass you will need to have about 60% of the questions right. This means you have 2 minutes for each question which should be just enough to understand the question and locate the correct answer in the I.E.E. Wiring Regulations book. The actual pass mark for the exam is said to be 60%, but C&G confirmed that it can change slightly depending on the national avarages achieved by candidates. You should aim for 80% in order to be confident that you will pass.

Don`t forget, even if this is an open book exam (which means that you can use the book on the exam) you will still have to know the book well enough in order to find the answer quickly enough. The book is not a typical book for students, it is a British Standard, so you will have to be very familiar with the way it is structured in order to use it fast enough.

This is what you will need:

You will need a copy of the current edition of the I.E.E Wiring Regulations, we strongly recommend to get a copy of the The On-Site Guide and you will also need a scientific calculator.

This is what you will be expected to be able to do on the exam:

• Be able to use the Index
• Be able to find specific Regulations
• State the purpose and objective of the Regulations
• State the relationship between the Appendices and Regulations
• State the hazards, which the Regulations are designed to prevent
• Identify safety requirements
• Evaluate the legal status of the regulations and legislations
• State the main factors to be considered when designing and erecting an installation
• State the earthing arrangements available in the UK
• Be familiar with the methods of protection from shock arising from direct or indirect contact
• State the difference between main and supplementary bonding
• Calculate earth fault loop impedance
• Calculate voltage drop
• Select correct types of over current devices for installations
• Be familiar with all the details regarding special installations
• Calculate cable sizes for particular installations in relation to their current-carrying capacity and voltage drop
• State the reason for inspection and testing
• State the items which need to be inspected

Number of questions on the 18th Edition exam:

Part 1 - Number of questions: 4 (8%)
Part 2 - Number of questions: 2 (4%)
Part 3 - Number of questions: 8 (16%)
Part 4 - Number of questions: 13 (20%)
Part 5 - Number of questions: 15 (25%)
Part 6 - Number of questions: 8 (12%)
Part 7 - Number of questions: 7 (10%)
Appendices - Number of questions: 3 (5%)

Required book for the 18th Edition exam:

Requirements for Electrical Installations, IET Wiring Regulations, Eighteenth Edition, BS 7671:2018+A2:2022 (Electrical Regulations)

Helpful books for the exam:

On-Site Guide (BS 7671:2018+A2:2022) (Electrical Regulations) Spiral-bound – 23 May 2022