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CLEAR ELECTRICAL LEARNING

Pass Level 3 electrical exams with clearer revision.

Practice questions, worked answers, formula sheets and plain-English guides for apprentices, trainees and improvers.

Start with CircuitReady's Level 3 electrical revision guides, practice questions and free learning resources.

Built by an electrical learner, for electrical learners.

4 Guides240 Practice QuestionsWorked ExplanationsQuick Reference Cards7-Day Plans
CircuitReady Unit 302 Principles of Electrical Science revision guide cover
CircuitReady Unit 303 Fault Diagnosis and Rectification revision guide cover
CircuitReady Unit 304 Inspection, Testing and Commissioning revision guide cover
CircuitReady Unit 305 Electrical Systems Design revision guide cover

Built for people learning the electrical trade

CircuitReady helps apprentices, trainees and developing electricians understand difficult electrical topics through clearer explanations, structured revision and practical learning tools.

Electrical apprenticesLevel 2 and Level 3 learnersElectrician's mates and improversNVQ and AM2 candidatesECS and 18th Edition learners

Start here

1

Try 10 free questions

See the question style and check where you stand.

2

Find your weakest unit

Use the guide chooser to spot the topic holding you back.

3

Choose the guide or full bundle

Revise one unit, or get all four Level 3 guides together.

More than just revision guides

CircuitReady is being built as a practical revision system for electrical apprentices. Right now, you can get the Level 3 unit guides, free question taster and 4-guide bundle. Over time, the system may expand into quick test sheets, exam-ready checklists, progress trackers, fault-finding workflow packs and CircuitReady Pro.

Available now

Ready to download

  • Level 3 unit revision guides
  • 240 practice questions across 4 guides
  • Worked answer explanations
  • Quick reference cards
  • 7-day study plans
  • Free 10-question revision taster
  • Level 3 bundle
Coming later

Possible future tools

  • Quick test sheets
  • Exam-ready checklists
  • Student progress tracker
  • Fault-finding workflow packs
  • Three-phase basics pack
  • CircuitReady Pro

Not yet available. Ideas being explored as CircuitReady grows.

Free Download

Try 10 Free Level 3 Questions

Download the free revision taster and test yourself on 10 tricky questions Level 3 students commonly get wrong.

  • Covers Electrical Science, Fault Diagnosis, Inspection & Testing, and Systems Design
  • Shows the common wrong answer
  • Gives the correct answer
  • Explains why the right answer is right
  • Free PDF download
Download Free Revision Taster

No spam. Just CircuitReady revision updates. You can unsubscribe at any time.

CircuitReady free revision taster cover — 10 questions every Level 3 electrical student gets wrong

Available now: Level 3 revision guides

CircuitReady's current guide range supports learners preparing for the City & Guilds 2365-03 Level 3 assessments. Choose the guide that matches your weakest subject, or get the complete bundle for support across all four units.

CircuitReady Unit 302 Principles of Electrical Science revision guide cover
Electrical science and calculations

Unit 302 — Principles of Electrical Science

Build confidence with electrical calculations, principles and the science behind electrical systems.

  • 60 multiple-choice practice questions
  • Two focused question banks
  • Worked answer explanations
  • Quick-reference cards
  • Structured 7-day study plan
  • Downloadable PDF access
Get this guide — £9.99
CircuitReady Unit 303 Fault Diagnosis and Rectification revision guide cover
Fault-finding and diagnosis

Unit 303 — Fault Diagnosis and Rectification

Practise fault-finding knowledge, diagnostic reasoning and common assessment topics.

  • 60 multiple-choice practice questions
  • Two focused question banks
  • Worked answer explanations
  • Quick-reference cards
  • Structured 7-day study plan
  • Downloadable PDF access
Get this guide — £9.99
CircuitReady Unit 304 Inspection, Testing and Commissioning revision guide cover
Inspection and testing

Unit 304 — Inspection, Testing and Commissioning

Revise testing procedures, results, instruments and the principles behind inspection and verification.

  • 60 multiple-choice practice questions
  • Two focused question banks
  • Worked answer explanations
  • Quick-reference cards
  • Structured 7-day study plan
  • Downloadable PDF access
Get this guide — £9.99
CircuitReady Unit 305 Electrical Systems Design revision guide cover
Systems design and reference

Unit 305 — Electrical Systems Design

Strengthen your understanding of design decisions, circuit requirements and how to use reference information efficiently.

  • 60 multiple-choice practice questions
  • Two focused question banks
  • Worked answer explanations
  • Quick-reference cards
  • Structured 7-day study plan
  • Downloadable PDF access
Get this guide — £9.99

Which guide should I choose?

Calculations and electrical principlesChoose Unit 302.
Fault finding and diagnosisChoose Unit 303.
Inspection and testingChoose Unit 304.
Systems design and reference-book speedChoose Unit 305.
Support across all four areasChoose the complete bundle.
★ Best Value — Save 37%

Complete Level 3 Bundle

Get all four Level 3 revision guides together for complete coverage and better value than buying them separately.

Principles of Electrical Science
Fault Diagnosis & Rectification
Inspection, Testing & Commissioning
Electrical Systems Design
4
Guides
240
Questions
Worked answers
Quick refs
7-day plans

Can you answer this?

Sample Question

A measured Zs of 1.2Ω is obtained. The tabulated maximum is 1.37Ω. Applying the 80% rule, is this acceptable?

This is the kind of detail that catches students out. CircuitReady guides explain the answer, not just whether you were right or wrong.

Built for apprentices who need clear revision

  • Clear explanations without unnecessary waffle
  • Practice questions that test real understanding
  • Worked answers so you can see why you got it wrong
  • Quick reference cards you can screenshot for last-minute revision
  • 7-day plans to help you stay focused before your exam

CircuitReady was built while studying for Level 3 electrical exams. The aim is simple: make revision clearer, more structured and easier to follow.

Future CircuitReady tools

If the launch goes well, CircuitReady may expand into Unit 301, Level 2 Electrical Installation, 18th Edition, 2391, quick test sheets, fault-finding workflow packs, three-phase basics and progress trackers.

Future Update

Coming later — CircuitReady Pro

CircuitReady Pro is a future revision tool idea designed to help apprentices spot weak areas, revise with more focus and track progress. The PDF guides are available now.

Frequently Asked Questions

No. CircuitReady is an independent revision aid. It is not affiliated with or endorsed by any awarding body.