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Importance of earthing design

Earthing design in electrical networks and installations is important to ensure correct operation. It also serves a vital safety role – facts which are amply reinforced in legislation and codes of practice. Most engineers in power supply, buildings services and instrumentation will need to become familiar with the subject during their career.

Earthing design in electrical networks and installations
Earthing design in electrical networks and installations (photo credit:

This may arise when investigating equipment failure, unsatisfactory power quality, interference or ensuring that safe conditions are provided for staff working on electrical equipment. Despite an obvious need, earthing is barely covered during engineering degree courses. It is also difficult to obtain up to date, reliable information on the subject.

For example, if one consults books on building services or electrical substation design, the chapter on earthing is almost inevitably a small one – a situation which is almost reversed when one examines the standards which apply.

The book starts by discussing:

  • The reasons for earthing
  • The alternative types of earthing system and
  • Legislation
The main emphasis is on practical application, so chapters on the type of electrode available, how to install, maintain and measure their impedance are included. Being able to predict performance is important at the design stage, but rather than introduce complex formulae, general design guidance is given and some graphs have been included to illustrate the more important factors influencing performance.

The coverage has been broadened to include typical earthing system designs for a range of applications and the problems which can be anticipated.

The main focus of the book is towards the earth electrode, i.e. that part of the earthing system which is installed in the ground. An efficient earth electrode is required for lightning protection, domestic electrical wiring and large industrial or power plants.

The general installation and design aspects for the earth electrode are similar throughout these applications, although the overall earthing system design will differ significantly amongst them.

Title:Earthing design in electrical networks and installations by Copper Development Association
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Earthing design in electrical networks and installations by Copper Development Association
Earthing design in electrical networks and installations by Copper Development Association

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  1. mohammad reza mokhari
    Jan 27, 2022

    I work for an electrical appliance company. In this factory, there are two separate earthing systems, one for the high voltage laboratory and the other for the protection of production line devices that are not electrically connected to each other.
    My question is, is there a practical test for proper operation of the recently completed line device earthing system?

  2. Setson Shivolo
    Mar 30, 2021

    This are the useful information that I have been always looking for.

  3. agha
    Dec 29, 2019

    hello dear,
    Thanks for sharing but i need information and answers about how make grounding and/or earthing for ships or boats and airplanes during on sea time or on sky air for airplane?

  4. niyi olaide
    Apr 21, 2017

    nice one

  5. mouaz mohamed
    Apr 05, 2016

    I’m thinking of the design of the entire electrical technical calculations integrated project through wonderful your site

  6. ajeel jabbar
    Apr 04, 2016

    dear sirs, i need your help to give me information’s,about earthing system for,ships,aircraft.submarines thanks

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