IET Wiring Regulations 2023 - Google Play

IET Wiring Regulations is the ultimate professional companion for UK electricians. Go beyond exam prep with on-site calculators, quick reference tables, inspection checklists, and digital certificates you’ll use every working day.

NEW (May 2026): Updated to BS 7671:2018+A4:2026 with an in-app syllabus picker — switch between 2022 (A2 / 2382-22) and 2026 (A4 / 2382-26) question banks from Settings.

--- EXAM PREP ---
Over 670 practice questions across 9 topics covering BS 7671:2018+A2:2022 AND BS 7671:2018+A4:2026. Choose your syllabus version from Settings — both question banks are included. Comprehensive explanations with section and page references for every answer. Mock tests with weighted scoring track your readiness for C&G 2382-22 and 2382-26.

--- 21 BS 7671 CALCULATORS ---
• Cable Sizing - current carrying capacity per BS 7671
• Voltage Drop - mV/A/m calculations (Table 4D5B)
• R1+R2 - conductor resistance from Table I1
• Conduit & Trunking Fill - cable fill calculations
• Cable Resistance at Temp - temperature correction
• Earth Fault Loop (Zs) - impedance check against Table 41
• Prospective Fault Current (PFC)
• Adiabatic Equation - minimum CPC size (Table 54.4)
• MCB / RCBO Selector - device selection per Reg 411
• Discrimination - upstream/downstream coordination
• Connected Load Total - maximum demand (Appendix A)
• Diversity - demand reduction factors
• Three-Phase Balancing - load distribution
• Power Factor Correction
• Ohm’s Law / Power - foundational calculations
• Ring Final Circuit - R1, R2, Rn checks
• EV Charger Installation - Section 722 compliance
• Motor Circuit - design per Reg 552
• Solar PV / DC Sizing - Section 712
• Earthing & Bonding - conductor sizing (Table 54.8)
• Lighting / Downlights - lumen and spacing calculations

--- 12 QUICK REFERENCE CATEGORIES ---
• Key Formulas - essential BS 7671 equations
• Zs Values - earth fault loop impedance tables
• Cable Capacities - current ratings by installation method
• Correction Factors - Ca, Cg, Ci grouping and thermal factors
• Voltage Drop - mV/A/m tables and permissible limits
• Conductor Resistance - R1+R2 reference values
• Earthing & Bonding - systems, conductors, and sizing
• Special Locations - bathroom zones, swimming pools, saunas
• IP Ratings - ingress protection code reference
• RCD Requirements - types, ratings, and where required
• Disconnection Times - maximum times by circuit type
• Insulation Resistance - minimum IR values by voltage

--- 8 PROFESSIONAL UTILITIES ---
• Amendment Tracker - follow all changes from the 18th Edition through Amendments 1-4
• CPD Logger - log continuing professional development hours with annual target tracking
• Dead Testing - digital schedule of test results for dead testing
• Live Testing - digital schedule of test results for live testing
• Visual Inspection - digital schedule of inspection checklist
• Digital Certificates - create and export EICR and EIC certificates as PDF
• EICR Coding Guide - quick reference for C1, C2, C3 and FI observation codes
• Part P Guide - interactive decision tree for Building Regulations Part P compliance

--- EXAM TOPICS ---
• Part 1 - Scope, Object and Fundamental Principles
• Part 2 - Definitions
• Part 3 - Assessment of General Characteristics
• Part 4 - Protection for Safety
• Part 5 - Selection and Erection of Equipment
• Part 6 - Inspection and Testing
• Part 7 - Special Installations or Locations
• Part 8 - Prosumers Installation
• Use of Appendices

--- BUILT FOR THE JOB SITE ---
Flash cards for quick revision. Mock tests with weighted scoring. Progress tracking with pie charts. Works offline. All data saved locally on your device.

Whether you’re preparing for your C&G 2382-22 or 2382-26 exam, carrying out an EICR, or sizing cables on site – IET Wiring Regulations is the one app every electrician needs.