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Installation Rules Exam: the SANS 10142-1 Wiring Code and the CoC Tests in Drawings The Tests in the Same Order, Each Rule on Its Own Page

Earthing, the main earth terminal, the DB, the 30 mA earth leakage rule, cable sizing, voltage drop, bathroom zones, the CoC test sequence and solar. Each topic has its own page: the drawing first, then what you need to remember. 64 illustrated pages.

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Every topic, its own pageEach rule drawn, with the explanation and the clause to look up beside it
64 illustrated pages64 illustrated pages: 8 parts, 60 topics
Up-to-date sourcesSANS 10142-1, SANS 10142-1-2 and the Electrical Installation Regulations, 2009
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Look Inside the Book

Every page has one big drawing and a box with the numbers, test values and clauses you need to know:

Discrimination: the device nearest the fault trips, the rest stays on.
Discrimination: the device nearest the fault trips, the rest stays on.
Ambient temperature, grouping and insulation: the three derating factors, multiplied
Ambient temperature, grouping and insulation: the three derating factors, multiplied
20 A × 30 m = 600 A·m → the cable needs 19,1 mV/A/m or less
20 A × 30 m = 600 A·m → the cable needs 19,1 mV/A/m or less
Earth leakage trip test: no trip at 50 % of IΔn, must trip at 100 %
Earth leakage trip test: no trip at 50 % of IΔn, must trip at 100 %
Safe isolation: 5 frames, prove–test–prove, before any supply-off test
Safe isolation: 5 frames, prove–test–prove, before any supply-off test
Test 2: insulation resistance at least 500 V d.c., minimum 1,0 MΩ
Test 2: insulation resistance at least 500 V d.c., minimum 1,0 MΩ
Test 4: earth electrode resistance per SANS 10199, required with alternative supplies
Test 4: earth electrode resistance per SANS 10199, required with alternative supplies
Installation Rules: two papers, at least 50% on each, prepared one part per week.
Installation Rules: two papers, at least 50% on each, prepared one part per week.

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These are real pages from the book. The table of contents is the full one: 8 parts and 60 topics.

The Problem Isn't You. It's How It Was Explained to You.

You're running a 20 A circuit to an outbuilding 30 m from the DB, and the question wants the cable size, with the voltage drop worked out.

You've sized cables on site for years. But the code puts the 5% limit in one place, the mV/A/m values in a table somewhere else and the method in a paragraph, and nobody shows you how they fit together.

20 A × 30 m = 600 A·m → the cable needs 19,1 mV/A/m or less

In the book, that same run is one page: the DB, 30 m of cable, the outbuilding. 20 A × 30 m = 600 A·m, so the cable needs 19,1 mV/A/m or less. The steps sit in a box next to the drawing.

Earthing, the 30 mA earth leakage rule, derating factors, bathroom zones and the CoC test order: each one has its own page, drawn the same way.

You see the steps, you understand where every number comes from, and you work out the next run without going back to the code.

COMPARE FOR YOURSELF

The Same Topic, Two Ways to Study It

THIS
  • The code: lines and lines of clauses
  • Derating factors explained only in words
  • You read it three times and still can't say what gets multiplied by what
Where the conditions of installation differ from the reference conditions on which the tabulated current-carrying capacities are based, correction factors shall be applied. Account shall be taken of the ambient temperature, of the number of circuits grouped together in the same enclosure or on the same tray, and of the type of insulation and its maximum permissible conductor temperature. The appropriate factors shall be applied cumulatively to the tabulated value, and the resulting capacity shall be not less than the rated current of the protective device.
FOR THIS
  • The three derating factors in one drawing
  • The factors and the multiplication in a box
  • Temperature, grouping and insulation: three arrows, one multiplication
Ambient temperature, grouping and insulation: the three derating factors, multiplied
CONTENTS

Take a Look at the 8 Parts and 60 Topics

The licence and the law, supply and earthing, DBs and protection, cables and voltage drop, circuits and special locations, the CoC test sequence, solar and an exam review: 64 pages, all illustrated.

IThe Licence, the Law and the Code · pp. 5-10
  1. From assistant to signing your own CoC
  2. Who is responsible for what
  3. What a CoC really is
  4. How SANS 10142-1 is organised
  5. Shall, should and may
  6. Finding a clause in under a minute
IISupply, Earthing and Bonding · pp. 11-19
  1. The supply: 230 V, 400 V, 50 Hz
  2. Earthing systems: TN-C-S and TT
  3. Conductor colours, old and new
  4. The main earth terminal
  5. The earth electrode
  6. Sizing the earth conductor
  7. Bonding metal pipes and the geyser
  8. Exposed versus extraneous conductive parts
  9. Earth continuity throughout
IIIDistribution Boards and Protection · pp. 20-27
  1. Inside a domestic DB
  2. The main switch and isolation
  3. Circuit breakers: rating and curve
  4. Earth leakage: the 30 mA rule
  5. Discrimination between devices
  6. Prospective fault current and breaking capacity
  7. DB labelling and notices
  8. Where a DB may and may not go
IVCables, Sizing and Voltage Drop · pp. 28-36
  1. Choosing the cable type
  2. Current-carrying capacity
  3. Derating factors
  4. The sizing sequence
  5. Voltage drop: the 5% limit
  6. Voltage drop, worked example 1
  7. Voltage drop, worked example 2
  8. Conduit and trunking
  9. Underground cables
VCircuits, Points and Special Locations · pp. 37-44
  1. Lighting circuits
  2. Socket-outlet circuits
  3. The geyser circuit
  4. Stove and fixed appliances
  5. Bathrooms: the zones
  6. Swimming pools and outdoor points
  7. Garages and outbuildings
  8. Alterations and additions
VIThe CoC Inspection and Test Sequence · pp. 45-55
  1. The test sequence at a glance
  2. Safe isolation before testing
  3. Visual inspection checklist
  4. Test 1: continuity of protective conductors
  5. Test 2: insulation resistance
  6. Test 3: polarity
  7. Test 4: earth electrode resistance
  8. Test 5: earth loop impedance
  9. Test 6: earth leakage operation
  10. Functional checks and the final walk
  11. Filling in the test report
VIISolar and Embedded Generation · pp. 56-59
  1. SANS 10142-1-2 in one page
  2. The grid-tied inverter installation
  3. Labels and isolation for two supplies
  4. Registration with the supplier
VIIIExam Review · pp. 60-64
  1. Paper 1 and Paper 2: how to prepare
  2. The numbers to have at hand
  3. Terms the exam mixes up
  4. The test sequence from memory
  5. Exam-day checklist

One Page, One Topic, All Clear

Think of it this way:

You're on site with the tester in your hand, the DB is open and the CoC has to be filled in. Which test comes first, and what reading does it need?

In the book you open the page of the test sequence and see the 8 steps drawn in order: supply-off tests first, then you energise, with where each lead goes and the value to look for.

Safe isolation: 5 frames, prove–test–prove, before any supply-off test

Same with the main earth terminal, the 30 mA earth leakage rule, voltage drop with worked examples, bathroom zones and solar labels: each one on its own page.

Wireman's Licence Illustrated is 8 parts and 60 topics, all drawn, and at the end an exam review with the numbers to have at hand and the test sequence from memory.

What you see drawn, you don't have to memorize.

What's Inside Wireman's Licence Illustrated:

Ipp. 5-10

The Licence, the Law and the Code

The road from assistant to signing your own CoC, who is responsible for what, what a CoC really is, how SANS 10142-1 is organised, shall, should and may, and how to find a clause fast.

IIpp. 11-19

Supply, Earthing and Bonding

The 230/400 V 50 Hz supply, TN-C-S and TT, old and new conductor colours, the main earth terminal, the earth electrode, earth conductor sizing, bonding pipes and the geyser, and earth continuity.

IIIpp. 20-27

Distribution Boards and Protection

Inside a domestic DB, the main switch and isolation, breaker rating and curve, the 30 mA earth leakage rule, discrimination, fault current and breaking capacity, labels and where a DB may go.

IVpp. 28-36

Cables, Sizing and Voltage Drop

Choosing the cable, current-carrying capacity, derating factors, the sizing sequence, the 5% voltage drop limit with two worked examples, conduit, trunking and underground cables.

Vpp. 37-44

Circuits, Points and Special Locations

Lighting and socket-outlet circuits, the geyser, the stove and fixed appliances, bathroom zones, pools and outdoor points, garages and outbuildings, and alterations and additions.

VIpp. 45-55

The CoC Inspection and Test Sequence

The whole CoC sequence in the order you do it on site: safe isolation, the visual inspection, continuity, insulation resistance, polarity, earth electrode, earth loop impedance, the earth leakage test, functional checks and the test report, each with where the leads go and the reading to look for.

VIIpp. 56-59

Solar and Embedded Generation

SANS 10142-1-2 on one page, the grid-tied inverter installation, labels and isolation for two supplies, and registration with the supplier.

VIIIpp. 60-64

Exam Review

How to prepare for Paper 1 and Paper 2, the numbers to have at hand, terms the exam mixes up, the test sequence from memory and an exam-day checklist.

At the end of the book: An exam review with the numbers to have at hand, the terms the exam mixes up and the test sequence from memory.

Plus: 2 Free Books

Installation Rules Practice Book

BONUS 1: «Installation Rules Practice Book»

Value on its own: US$ 17.90

Exam-style questions on the wiring code with the answer and the clause to look up, so you practise finding the rule fast before Paper 1 and Paper 2.

The 15 Most Common Wiring Mistakes

BONUS 2: «The 15 Most Common Wiring Mistakes»

Value on its own: US$ 14.90

Each mistake drawn wrong and then right, from a broken earth continuity to an unlabelled DB, so you spot it on site before the inspection does.

Wireman's Licence Illustrated with 2 Free Books

  • Wireman's Licence Illustrated: 64 illustrated pagesUS$ 63
  • BONUS 1: Installation Rules Practice BookUS$ 17.90
  • BONUS 2: The 15 Most Common Wiring MistakesUS$ 14.90
  • High-resolution PDF to printIncluded
Total value US$ 95.80
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Who This Book Is For

You're studying the Installation Rules

You're studying the Installation Rules

Every clause you need comes with a drawing and the clause number to look up, so the code stops being a pile of tables and starts making sense.

Paper 1 and Paper 2 are close

Paper 1 and Paper 2 are close

The exam review puts the numbers to have at hand, the terms that get mixed up and the test sequence on a few pages you can go over the night before.

You already wire and test on site

You already wire and test on site

Print the test pages and keep them in the van: the order, where each lead goes and the value each test has to give.

Everything You Get Today

US$ 95.80US$ 27
YES, I WANT WIREMAN'S LICENCE ILLUSTRATED FOR US$ 27

📄 This is a digital PDF book sent to your email: nothing is printed or shipped.

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Frequently Asked Questions

Is it for me if I've been wiring for years but never written the Installation Rules?

Yes. It doesn't explain what a plug is: it goes straight to the clauses, the values and the test sequence the exam asks about, with a drawing for each one.

Where does the content come from?

From South African sources only: SANS 10142-1 and SANS 10142-1-2 for embedded generation, in the editions named on the first page of the book, and the Electrical Installation Regulations, 2009, under the Occupational Health and Safety Act 85 of 1993. It's written for the Installation Rules exam in South Africa: 230/400 V, the CoC, the DB and the test sequence as SANS 10142-1 sets them out. It isn't a book from another country. Everything is explained in our own words and drawings, and each page tells you which clause to look up. It doesn't reproduce the code's text or tables, so keep your own copy of SANS 10142-1.

Is it official material?

No. It's an independent study book. It isn't issued or endorsed by the SABS, the Department of Employment and Labour, any SETA or any exam centre.

Does it give me a licence, a registration or a certificate?

No. It's a study book to prepare for the Installation Rules exam and revise the code and the tests. It doesn't give you a licence, a registration or a certificate, and it doesn't replace accredited training or practical experience. You register with the Department of Employment and Labour once you meet its requirements.

Are the practice questions the ones from the exam?

No. They're written for this book in the style of the exam, with the answer and the clause to look up. They are not official exam questions.

When and how do I get it?

The book and the 2 free books come as a PDF by email, to the address you enter at checkout.

Do I have to pay every month?

No. It's a one-off payment. No subscription.

Can I have it on paper?

Yes. It's a PDF you can print at home or at a print shop, all of it or just the pages you want on site.

How does the refund work?

You have 30 days. We refund everything if the file won't open, if the book isn't what you see on this page, if you were charged twice or if the email doesn't arrive: just email us.

Before You Close This Page

No more rereading clauses that don't stick.

Voltage drop to the outbuilding: drawn on one page, step by step.

You walk into Paper 1 and Paper 2 knowing where everything is.

Drawings make studying faster.

The book is right below.

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📄 This is a digital PDF book sent to your email: nothing is printed or shipped.