UNIT REVISION

City & Guilds 8202 Unit 307: Requirements for electrical installations — Complete Revision Guide

A structured revision walkthrough of every topic in City & Guilds 8202 Unit 307 (Requirements for electrical installations). Use it as a personal study checklist — work through each topic, tick off the points you can confidently explain or calculate, and use the linked Elec-Mate tools to practice the calculation-led parts. Designed for T Level students taking the electrical installation specialism.

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8 min readUpdated 2026-05-18Andrew Moore, Founder of Elec-Mate

Written and reviewed by Andrew Moore, founder of Elec-Mate, against BS 7671:2018+A4:2026, IET Guidance Note 3 and the IET On-Site Guide.

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Key Takeaways

  • 1City & Guilds 8202 Unit 307 — Requirements for electrical installations — is a core component of the T Level in Building Services Engineering — Electrical Installation.
  • 2This unit is typically delivered to T Level students taking the electrical installation specialism and covers 5 main topic areas.
  • 3Across the 5 topics there are 9 specific points you should be able to explain, demonstrate or calculate before the end-of-unit assessment.
  • 4Common assessment formats include online multiple-choice exams, written short-answer papers, and practical workshop tasks observed by your tutor.
  • 5Use the structured topic list below as a personal checklist — work through each point and confirm you can explain it without referring to your notes.
  • 6The Elec-Mate apprentice tier includes mock exams, flashcards, and revision notes mapped to this unit. Use the tools to test yourself between college blocks and on-site days.
01 · Unit Revision

Topic 1: The fundamental principles and general assessments of BS 7671

In this section you should be confident with the following points. Each one is a specific topic you should be able to explain, demonstrate, or calculate.

  • Learners will describe the scope and objective of the BS 7671 requirements for electrical installations..
  • Learners will explain the fundamental principles of the BS 7671 requirements for electrical installations..
  • Learners will explain and interpret the definitions used in BS 7671 and relate the definitions to the regulations and relevant appendices..
  • Learners will interpret the requirements for assessing the general characteristics of electrical installations within the scope of BS 7671..
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02 · Unit Revision

Topic 2: The protective measures given in BS 7671

In this section you should be confident with the following points. Each one is a specific topic you should be able to explain, demonstrate, or calculate.

  • Learners will identify the requirements of protection for safety within the scope of BS 7671 and interpret how requirements for safety apply to electrical installations within the scope of BS 7671 to include:.
03 · Unit Revision

Topic 3: The requirements for selection and erection of BS 7671

In this section you should be confident with the following points. Each one is a specific topic you should be able to explain, demonstrate, or calculate.

  • Learners will identify the requirements for selecting and erecting equipment, within the scope of BS 7671 and interpret how they apply to electrical installations within the scope of BS 7671 to include:.
04 · Unit Revision

Topic 4: The requirements for inspection and testing in BS 7671

In this section you should be confident with the following points. Each one is a specific topic you should be able to explain, demonstrate, or calculate.

  • Learners will identify the requirements in BS 7671 for inspection and testing and interpret how this applies to electrical installation..

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05 · Unit Revision

Topic 5: The requirements for special locations and information within appendices of BS 7671

In this section you should be confident with the following points. Each one is a specific topic you should be able to explain, demonstrate, or calculate.

  • Learners will identify the requirements in BS 7671 for special installations and locations and interpret how these effect the general requirements of the regulations..
  • Learners will identify the information in the appendices of BS 7671 and specify how it is used to support electrical installation activities. Guidance for delivery It is important that the learners have a full understanding of the underpinning knowledge of each of the topics. The practical application of this knowledge and understanding in the working environment is very important. Learners must be able to apply their knowledge and understanding to a wide range of situations covering working safely with different types of equipment and in different working environments. Although some of the content may be delivered in a classroom environment, it is important that learners can relate this knowledge and understanding to actual workshop situations, practical tasks and applications. It is expected that a range of delivery methods will be used including presentations, internet research and, where applicable, visiting speakers. Appendix 1 Sources of general information The following documents contain essential information for centres delivering City & Guilds qualifications. They should be referred to in conjunction with this handbook. To download the documents and to find other useful documents, go to the Centres and Training Providers homepage on www.cityandguilds.com. City & Guilds Centre Manual This document provides guidance for organisations wishing to become City & Guilds approved centres, as well as information for approved centres delivering City & Guilds qualifications. It covers the centre and qualification approval process as well as providing guidance on delivery, assessment and quality assurance for approved centres. It also details the City & Guilds requirements for ongoing centre and qualification approval, and provides examples of best practice for centres. Specifically, the document includes sections on:.
06 · Unit Revision

Study This Unit with Elec-Mate

Elec-Mate’s apprentice tier turns this unit checklist into an active study plan. You get mock exam questions, flashcards, and revision notes mapped to this unit, plus working calculators for every calculation-led topic. Most apprentices use the app between college blocks and on the train to site — short bursts of revision compound across the year.

For apprentices

The Elec-Mate apprentice tier includes mock exams, flashcards, and revision notes for City & Guilds 8202 Unit 307 plus every other unit in your qualification. 7-day free trial — see your progress on the tutor dashboard.

A Five-Step Revision Plan for This Unit

A repeatable approach that works for City & Guilds 8202 Unit 307 and every other unit in your qualification.

1

Read through every topic point once

Start at Topic 1 and read every bullet point. Don’t try to memorise — just get familiar with the scope. Note any topic that feels unfamiliar so you can come back to it.

2

Map each topic to its calculator or guide

For calculation-led topics, open the relevant Elec-Mate calculator and try one worked example. For theory-led topics, find the matching section in BS 7671 or the IET On-Site Guide.

3

Work through Elec-Mate mock exam questions

The Elec-Mate apprentice tier includes mock questions mapped to this unit. Aim for 80%+ on a clean run before the real exam.

4

Get hands-on time on the bench

For practical units (inspection and testing, installation), ask your tutor for additional workshop access. The bench is where the points click.

5

Self-explain each topic to a peer

If you can explain a topic in your own words to another apprentice and they understand it, you know it. This is the single highest-leverage revision tactic.

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