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5.0 from 173 Google reviewsFree BS 7671 study cards for electricians
48 one-page visual cards, updated to Amendment 4 (2026). Each one has a technical drawing, five key points, the regulation numbers, a common mistake and a tip from site. Print them or keep them on your phone.
What's inside
- Safety & the RegulationsSafe isolation, GS38, the EAWR 1989, how BS 7671 is laid out, Part P and what changed in A4.
- Supply, Earthing & BondingTN-S, TN-C-S and TT, bonding sizes, Ze and PFC, disconnection times and where 30 mA RCDs go.
- Circuits, Cables & DesignRings and radials, lighting, cable types, Ib ≤ In ≤ Iz, voltage drop, max Zs, adiabatic and safe zones.
- Special Locations & New TechBathrooms, pools and saunas, outbuildings, solar PV, batteries (Chapter 57), EV charging and heat pumps.
- Inspection, Testing & CertificationTest sequence, R1+R2, ring continuity, IR, polarity, Zs, RCDs, EIC, Minor Works and EICR codes.
- On-site Practice & Fault FindingTerminations and torque, three-phase, first and second fix, and tracing the faults you meet most.
- BonusA formulas and key values sheet, plus practice questions with worked answers.
Get the free pack
PDF, 51 pages, A4 landscape (1.4 MB).
A look inside
A study and revision aid written in our own words. Always work to the current edition of BS 7671 (published by the IET and BSI) and the manufacturer's instructions.