---
title: "IET Wiring Regulations 18th Ed - Reviews, Revenue and Downloads in United Kingdom | Apple App Store"
description: "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"
---

# IET Wiring Regulations 18th Ed — United Kingdom
> BS 7671 A2:2022 & A4:2026

![IET Wiring Regulations 18th Ed App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/8a/59/3a/8a593a6f-27e3-2fae-f4aa-377633362352/AppIcon-0-0-1x_U007emarketing-0-8-0-85-220.png/434x0w.png)

**Developer:** [Eknath Kadam](https://apptail.io/developer/eknath-kadam-nyQ) (United Kingdom)
**Category:** Education
**Rating:** 4.7/5 (1,505 ratings)
**Price:** Free
**Bundle ID:** com.webrich.IETWiringRegulationsLite
**Store:** Apple App Store
**Country:** United Kingdom
**Version:** 74 (released 2026-10-02)
**Original Release:** 2015-11-04
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/gb/app/app/id1052750962)
**AppTail Page:** [https://apptail.io/app/iet-wiring-regulations-18th-ed-fUh/united-kingdom](https://apptail.io/app/iet-wiring-regulations-18th-ed-fUh/united-kingdom)

## IET Wiring Regulations 18th Ed Description
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.

• Privacy Policy: 
• EULA: 

## IET Wiring Regulations 18th Ed Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/45/48/72/45487228-9ebe-d3cd-376e-d4969c675cbf/01_marketing.png/1284x2778.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/6a/68/32/6a683272-d648-eb26-69a0-62f4212c224d/02_marketing.png/1284x2778.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/28/a1/62/28a16218-4da2-68f4-9098-c617cfb035ae/03_marketing.png/1284x2778.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/3d/0c/1a/3d0c1a21-4092-12a5-cbae-352667f92672/04_marketing.png/1284x2778.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/49/7f/00/497f005e-5624-d0ba-26e7-1bb78c3bfef9/05_marketing.png/1284x2778.png)
- [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/4d/85/a4/4d85a479-3361-debb-b8e1-aeb5f05fcb61/06_marketing.png/1284x2778.png)
- [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/63/a0/46/63a0467d-5de5-d54c-03b8-bb285781e373/07_marketing.png/1284x2778.png)
- [Screenshot 8](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/9f/9d/09/9f9d0989-d0ff-417f-56c2-cb241a7a7bd7/08_marketing.png/1284x2778.png)

## IET Wiring Regulations 18th Ed Rating Breakdown in United Kingdom
- 5 stars: 1,245 (83%)
- 4 stars: 146 (10%)
- 3 stars: 61 (4%)
- 2 stars: 14 (1%)
- 1 stars: 39 (3%)

## IET Wiring Regulations 18th Ed Reviews in United Kingdom

### ***-- "Needs updating"
Part 4 questions don’t work for the table questions been updated and got worse.
-- Owenb2102, 2024-10-15

### *---- "Wrong Question"
On Part 4 few wrong answers and questions but still glad to have this app I wish it was an option to correct them as example on part 4 418.1.5 and so on.
But it’s helpful knowledge
-- Stoke Gas, 2024-10-04

### **--- "Limited access"
having to pay for education and the extended knowledge is ridiculous
-- Evan kkam, 2024-06-12

### **--- "Review"
I paid for this app over 3 months the questions and answers were great.
It shows you where you can find the answers in bs7671 but only a handful out of around 580 are only in the exam 
I took the exam expecting many in the exam but I was wrong.
I would strongly advise to undertake a 3 day course through the niceic to guide you through navigation of the course with a lead of light
-- Relley3930, 2024-05-10

### ***** "Big help"
This is very easy way to improve yr electric skill
-- Macholla, 2024-04-21

### ***** "Electrical improver"
Passed my 18th edition full marks thanks to this app
-- Paperchaser ldn, 2024-02-21

### ***-- "Good app"
Good app, however whenever you got a question wrong on the old app it showed up the page number straight away, instead of at the end
-- Spark12744, 2024-01-05

### ***-- "Not one question in my exam"
I don’t know how I feel about it I bought this app thinking surely there will be some questions in my exam from the app ? 
WRONG
I DIDNT HAVE A SINGLE QUESTION IN THE EXAM
So if you are thinking about buying this app, it’s all luck as to whether or not you get questions from the app in your exam 

But as a tool to help you navigate the wiring regs I think you can’t fault that 

Give yourself a mock test and then use the book like you would in the exam 

I just used the app for my revision practice and it was no help at all
-- Levifrench1987, 2023-11-22

### ***-- "Great App, but…"
This is indeed a great app and it has helped me. I’m giving it a 3 star because I thought I had already paid for the full version but recently they introduced the subscription part and now the app is working as if I never paid for it. Very disappointing. As a result I will now have to delete this app and look for alternatives.
-- nshdveid, 2022-08-17

### ***** "Best app for 18th edition"
Honestly a great and such a helpful app for anyone looking to do their 18th edition exam, is updated also for the 2nd amendment, thank you so much for this app as it helped me pass my exam with flying colours!
-- Mo trade = Mo money, 2022-07-16

[View all IET Wiring Regulations 18th Ed reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews)

## IET Wiring Regulations 18th Ed In-App Purchases
| Item | Price |
|------|-------|
| Full Question Bank | £17.99 |


## IET Wiring Regulations 18th Ed Discovered Keywords
- iet wiring regulations 2023

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---

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