Installation Rules Exam Preparation Guide – Part 3

Overview

Understanding how questions are structured is just as important as knowing the regulations themselves. Certain sections of SANS 10142 appear consistently in exam papers. This part of the installation rules exam preparation series deals with areas that should receive the majority of your study focus and time. The following are seven high-weight topics in the installation rules exams.

📘 New to the exam? Start with our Complete Installation Rules Exam Guide to understand Paper 1, Paper 2, calculations and SANS 10142 requirements.

1. Protection Against Electric Shock

SANS 10142 is the South African National Standard governing the wiring of premises. It sets the minimum requirements for safe electrical installations. This section covers:

Basic protection requirements
Fault protection
Automatic disconnection of supply
Earth leakage devices

			Exam tip: Questions in this section often test whether you understand when specific protection measures are mandatory.
              

2. Earthing and Bonding

Earthing and bonding are among the most heavily tested topics:

Protective earthing systems
Equipotential bonding
Fault loop impedance
Earth continuity

			Exam tip: Be aware that minor changes in wording can completely alter the correct answer.
              

3. Overcurrent and Fault Protection

This section covers the following:

Circuit breakers and Fuses
Short-circuit protection
Overload protection
Coordination of protective devices

			Exam tip:  Many candidates confuse overload, overcurrent and fault protection concepts.
              

4. Cable Selection and Sizing

Common exam themes include:

Current-carrying capacity
Voltage drop limits
Installation methods
Environmental factors

			Exam tip: Understanding cable selection criteria is important than memorising tables.
              

5. Distribution Board Requirements

Expect questions on:

Labelling
Positioning and accessibility
Protection devices
Separation of circuits

Exam tip: Distribution board compliance is frequently tested.

6. Inspection and Testing

This section include topics on:

Mandatory inspection procedures
Tests performed when supply is off
Tests performed when supply is on
Documentation requirements before commissioning
Reporting of defects

Exam tip: This is a high-weight section and is frequently tested.

7. Certificate of Compliance (CoC)

Legal responsibility is a critical component and you can expect questions such as:

Who may issue a CoC
When a CoC is required
Legal accountability
Responsibilities of registered persons

Exam tip: Misunderstanding CoC obligations often leads to lost marks.

SANS 10142 exam preparation illustration

Start Your Installation Rules Exam Preparation Today

Passing the Installation Rules Exam in South Africa requires more than reading SANS 10142 — it requires structured preparation and realistic exam practice. Our Installation Rules Study Guide is designed specifically for South African electricians and it includes: Realistic exam-style questions, clear and practical explanations, focus on high-weight SANS 10142 sections. If you are serious about passing on your first attempt, start preparing strategically today. The exam rewards strategic preparation — not last-minute cramming.

👉 Start preparing smarter today and increase your chances of passing on your first try.

Start Your Installation Rules Exam Preparation Today

What You Will Learn

You will learn how to:

Interpret and apply the OHS Act and Electrical Installation Regulations
Calculate Voltage Drop, PSCC (AC & DC), Touch Voltage correctly
Perform inspection, testing, verification, and complete CoC tasks
Master SANS 10142‑1 installation requirements
Work under exam time pressure

Keep Going in the Series

Each part of the installation rules exam preparation guide builds on the previous. Work through the entire series to map out your study plan before diving deep.