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EDWartens UK

Free course · Electrical

Wiring Regulations in Practice: BS 7671 and IEC 60364

The UK wiring regulations an electrical designer, inspector or site engineer works to every day, BS 7671:2018+A4:2026, taught with the IEC 60364 method behind it: the structure of the standard, earthing arrangements, automatic disconnection and Zs, RCD types, overcurrent protection and selectivity, cable sizing with correction factors, voltage drop and the CPC check, AFDDs and SPDs, bathrooms, PV, EV charging and batteries, inspection and testing, and certificates and condition reports.

See the modules

Free to learn. Verifiable certificate £19 when you pass the final exam (optional, VAT included).

Level
Intermediate
Modules
14
Video
25 hours
Price
Free

Outcome

What you will be able to do

Find the regulation that answers a design or testing question; identify the earthing arrangement and record the supply characteristics; check automatic disconnection with Zs and choose RCD types; select protective devices with Ib <= In <= Iz and check breaking capacity; size cables with correction factors for hot climates and grouping; check voltage drop, Zs and the CPC; apply the rules for wiring systems, isolation, bonding, AFDDs, SPDs and special locations; carry out and record initial verification; code a condition report; and design a three-phase sub-main end to end.

  • Find the Part and regulation of BS 7671 or IEC 60364 that answers a design, installation or testing question
  • Identify TN-S, TN-C-S (PME and PNB), TT and IT supplies and record Ze, fault current and maximum demand
  • Check automatic disconnection with Zs and choose the right RCD type and rating for each circuit
  • Coordinate devices and cables with Ib, In and Iz, check breaking capacity and selectivity
  • Size cables with ambient, grouping and insulation correction factors
  • Prove voltage drop, design Zs and the protective conductor with the adiabatic equation
  • Apply the rules for bathrooms, solar PV, EV charging, AFDDs, SPDs and the new A4 chapters on batteries and PoE
  • Carry out and record initial verification, complete an EIC and code an EICR with C1, C2, C3 and FI

Software

A spreadsheet (LibreOffice Calc is free) for the Zs, cable sizing and voltage drop sheets you build in the modules. A copy of BS 7671 or IEC 60364 is not needed to learn: the notes paraphrase the rules and give the formulas, but real design and certification work must use the edition your project or authority names.

Hardware

None. Test instruments are shown in the videos; you do not need one.

Syllabus

14 modules

Each module has video lessons, notes and a short quiz. The final exam closes the course.

  1. 1How wiring regulations work: IEC 60364, BS 7671 and Amendment 42 lessons
  2. 2Fundamental principles, supply characteristics and earthing arrangements5 lessons
  3. 3Protection against electric shock: ADS, disconnection times and Zs3 lessons
  4. 4RCDs: additional protection, RCD types and leakage3 lessons
  5. 5Overcurrent protection, fault current and selectivity2 lessons
  6. 6Cable sizing: current-carrying capacity and correction factors3 lessonsLab
  7. 7Voltage drop, the Zs design check and the CPC thermal check4 lessonsLab
  8. 8Selection and erection: wiring systems, isolation, switching and bonding4 lessons
  9. 9Fire and surge: thermal effects, AFDDs and SPDs4 lessons
  10. 10Special locations and new technology: bathrooms, PV, EV charging, batteries and PoE5 lessonsLab
  11. 11Inspection and testing: initial verification step by step6 lessons
  12. 12Certificates and condition reports: EIC, MEIWC and EICR coding4 lessons
  13. 13IEC 60364 around the world, Gulf utility rules and a sub-main designed end to end3 lessons
  14. 14Final assessment1 lesson

How it works

How this course works

  1. Watch the video lessonsOne module at a time, at your own pace.
  2. Take the module quizA short quiz at the end of each module shows what stuck.
  3. Keep your notesWrite in My notes beside each module and ask the trainer if you are stuck.
  4. Practise in the labOptionalTry a task from the module in the EDWartens Lab, in your browser.
  5. Sit the final examPass it once you have been through the modules.
  6. Certificate, if you want oneOptionalPaid, and only after you pass. Anyone can check it online.

EDWartens Lab

Practise this in the EDWartens Lab

Size a cable with correction factors, check the voltage drop and fault-find an EV charger, the checks a wiring design and an inspection rely on.

Works alongside Wiring Regulations in Practice: BS 7671 and IEC 60364. The Lab is substation and mcc practice in your browser: no install, no hardware, free to use. Sign in as a learner and it opens with your account.

Open the free lab See the Lab
Substation and MCC: Work a real switchroom.

Levels to try with this course

Optional. Skip it whenever you like: it never blocks your progress or your certificate.

Why practise in a lab

Technical work is judged on what you can do: wiring, commissioning, finding a fault. Doing a task yourself teaches more than watching it a second time, and a lab lets you try it safely before you meet real equipment. It does not replace working on real hardware.

  • Practise safely, so a mistake costs nothing.
  • The lab checks your work like a site test, so you know when it is right.
  • Free, in your browser, with nothing to install.

Certificate

An optional certificate when you pass

Learning is free. Pass the final exam and you can have a certificate for £19, including VAT, with a number employers can check online. It records that you completed a free online course; it is not a regulated qualification or a CPD certificate.

  • Your name, the course, its study time and your final exam score
  • A unique certificate number and a QR code to its verification page
  • Issued by Wartens Ltd; add it to your LinkedIn profile in one click
  • Pay now or after you pass: it is issued the moment you pass the final

How the certificate works

Sample certificate for Wiring Regulations in Practice: BS 7671 and IEC 60364

Credits

Who made the lessons

The video lessons belong to their creators. EDWartens wrote the study plan, notes, quizzes and the final exam.

  • SparkyNinja

    the 18th Edition Training Series episodes on the introduction, Part 1, Part 3, Chapters 41, 42, 43 and 46, Sections 521 and 522 and Part 6, and the lessons on Type AC RCDs, DC leakage and AFDDs

  • GSH Electrical

    the lessons on earthing arrangements, maximum demand, the earth fault loop and its temperature factor, 80 percent Zs values, gas pipe bonding, premature collapse, AFDDs, fitting an SPD, bathroom zones, bidirectional devices, dead and live testing, RCD testing, and completing EICs and Minor Works certificates

  • John Ward (jwflame)

    calculating maximum earth fault loop impedance and the Section 722 EV charging earthing arrangements

  • eFIXX

    the complete guide to RCDs and the walk-through of what is inside Amendment 4

  • LEARN ELECTRICS

    PNB and PME earthing under Amendment 4, selectivity and coordination, the voltage drop masterclass, and EICR condition and observation codes

  • NICEIC

    the summary of the key changes in BS 7671 Amendment 4

  • Sparky Help

    the guide to cable sizing calculations and the adiabatic check of the protective conductor

  • Broughton's Electrical Group Ltd

    the introduction to cable sizing calculations to BS 7671

  • chriskitcher

    the worked cable calculation

  • Modecsoft Ltd

    the webinar on solar PV design to BS 7671 Section 712

  • ETAP Software

    low-voltage cable capacity, sizing and protection against electric shock to IEC standards

  • Electrical Engineers Academy

    circuit breaker and cable sizing calculations as practised under the DEWA regulations

  • Electrical Stuff

    the differences between the Abu Dhabi and DEWA regulations

Questions

About this course

Which edition does it cover, and is Amendment 3 included?
It is written to BS 7671:2018+A4:2026, the current text, published by the IET and BSI on 15 April 2026. The previous text, BS 7671:2018+A2:2022+A3:2024 (Amendment 3 was a 2024 amendment), was withdrawn on 15 October 2026, six months after A4 appeared. Check the IET website for the edition your contract names.
What is this wiring regulations course?
It is a free-to-learn online course on BS 7671, the UK wiring regulations for low-voltage installations, taught with the IEC 60364 method it is based on. It covers the structure of the standard, earthing arrangements, automatic disconnection and Zs, RCDs, cable sizing, voltage drop, special locations, inspection and testing, and certificates, with BS 7671:2018+A4:2026 as the worked example.
Who is the BS 7671 and IEC 60364 course for?
It is for electricians, electrical supervisors, MEP and electrical design engineers, inspectors and final-year electrical students who design, install, check or certify low-voltage installations. You should know Ohm's law, single and three-phase power and what a circuit breaker does.
Is the course free to learn?
Yes. Every module, the notes, worked problems, practice tasks, the project and the final assessment are free to learn, and the only software you need is a free spreadsheet. The certificate is optional.
Does the course cover BS 7671 Amendment 4?
Yes. It is written to BS 7671:2018+A4:2026, published on 15 April 2026, including the new chapter on stationary batteries, the Power over Ethernet section, PNB earthing, the AFDD wording and the change to condition report outcomes. The previous text is withdrawn on 15 October 2026.
Is this the City and Guilds 2382 18th Edition qualification?
No. It covers the knowledge behind the 18th Edition and IEC 60364 and is useful preparation, but it is not a City and Guilds, IET, NICEIC or utility qualification or licence. Local regulations and a competent person govern real installation and certification work.
How long does the course take?
About 25 hours at your own pace, including about 15 hours of video by named creators, plus the notes, worked problems and practice tasks. The optional workshop design and verification project takes about 12 hours more.
What certificate do I get, and how is it verified?
You get a verifiable certificate of completion from EDWartens when you finish the modules and pass the 15-question final at 60 percent. It carries a unique certificate number and a QR code that open a public verification page showing the course, the modules covered and your final score.

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