Design & Load Assessment
Supply characteristics, connected load, maximum demand, diversity, design current, phase balancing and structured design workflow.
Eya-Macethe Engineering Library · First Digital Edition 2026
Wiring of Premises
A Practical Engineering Guide to SANS 10142-1
Design • Installation • Protection • Inspection • Testing • Certification. A practical South African reference connecting electrical theory, calculations, drawings, installation decisions, verification and certification.
596 Pages20 Parts289 ChaptersAppendices A–O320 WOP-EL DrawingsSouth African Context
Complete Downloadable PDFR499.99
Preview the first 100 pages online. The complete PDF is released after verified Payfast payment.
596Digital pages
289Chapters
320WOP-EL drawings
A–OAppendices
R499.99Once-off PDF
Premises Electrical Engineering
From supply characteristics to final certification.
The book follows the engineering chain from load assessment and supply design through conductors, protection, distribution boards, earthing, final circuits, alternative supplies, inspection, testing, CoC and complete worked design examples.
Client Brief→Load & Demand→Cable & Protection→DB & Earthing→Installation→Testing→CoC
Read Before You Buy
Page through the first 100 pages online.
Use the controls below to preview pages 1–100. The full 596-page downloadable PDF remains protected for purchasers.
Preview limited to pages 1–100. © Eya-Macethe Energy & Infrastructure. All rights reserved.
End of Free Preview
Continue with the complete 596-page publication.
You have reached page 100. Purchase the digital edition for the complete book, including Parts 1–20, Chapters 1–289, Appendices A–O, engineering drawings, schedules, templates and worked calculations.
Purchase & Download PDF — R499.99Secure checkout powered by Payfast. The complete PDF is released only after verified payment confirmation.
Inside the Book
A complete premises-wiring engineering reference.
Cables & Conductors
Cable types, current-carrying capacity, correction factors, voltage drop, fault withstand, neutral and protective conductors.
Protection
Overload, short-circuit, earth-fault and shock protection, MCB/MCCB selection, breaking capacity, RCDs, SPDs and coordination.
DBs, Earthing & Bonding
Distribution-board design, busbars, isolation, protective earthing, bonding, electrodes, loop impedance and practical verification.
Residential & Commercial
Final circuits and complete practical examples for dwellings, offices, retail, restaurants, workshops, warehouses and schools.
Solar, BESS & Generators
Alternative supplies, generator changeover, inverter systems, battery storage, essential loads, islanding and multi-source protection.
Inspection, Testing & CoC
Continuity, insulation resistance, polarity, loop impedance, RCD testing, functional testing, records and certification workflow.
Engineering Calculations
Worked methods for current, cable sizing, derating, voltage drop, fault levels, PE sizing, generator, inverter, battery, PV and PFC.
Drawings & Templates
SLDs, DB schematics, layouts, earthing details, schedules, inspection forms, commissioning sheets, specifications and BOQ framework.
Engineering Drawing System
320 numbered WOP-EL engineering figures and diagrams.
The drawing system runs from WOP-EL-001 to WOP-EL-320 and supports the theory with distribution architectures, fault paths, DB arrangements, earthing, alternative supplies, practical layouts, testing diagrams and the master design example.
- Single-phase and three-phase distribution architectures
- Protection, fault-current and earthing diagrams
- Generator, PV, inverter and BESS arrangements
- Residential, commercial and specialist practical details
- Inspection, testing and certification workflows
WOP-EL-001 → WOP-EL-320
Engineering Drawing SystemIntegrated throughout the publicationWorked Engineering
Calculations show the method and the engineering decision.
Worked examples state the objective, formula, variables, assumptions, substitution, result, unit check, selection and interpretation.
Objective→Formula→Inputs→Substitution→Result→Selection→Verification
Who It Is For
For people who design, install, inspect, test or study electrical installations.
Electrical EngineersEngineering TechnologistsElectriciansElectrical ContractorsRegistered PersonsCandidate ProfessionalsInspectors & TestersProject ManagersEngineering StudentsFacilities Teams
Professional use and disclaimer
This publication is an independent educational and engineering reference. It does not replace SANS 10142-1, legislation, the Electrical Installation Regulations, supply-authority requirements, manufacturer instructions, project specifications, professional judgement or legally required certification. Always verify the current controlled standards and project-specific conditions.
Eya-Macethe Engineering Library
Own the complete Wiring of Premises digital reference.
596 pages · 20 parts · 289 chapters · Appendices A–O · WOP-EL-001–320.