BS7430

23/02/2017 By Ian Leave a Comment

What are the Earthing Safety Calculations?

Safety Calculations – you’re overdue an update!

If 1-ohm is still in circulation on your documentation then this section applies to you.

Even though the Safety Calculations for determining a System Earth (Ground) has shifted away from an arbitrary Resistance figure, usually <1 ohm. It’s still all too common to see this outdated measure of installed success appear on client / employer requirement specifications(ER’s) as part of the Earthing Design Safety Calculations. [Read more…] about What are the Earthing Safety Calculations?

25/10/2016 By Hugh Leave a Comment

BIM Earthing Design – What Does the Future Hold?

In a previous post, we introduced BIM earthing to Electrical Earthing Design and cleared up a few misconceptions. In this post, I’m going to suggest where I believe BIM might be going.

Where is BIM heading for Lightning & Earthing Design?

Currently, most projects operate at BIM level 2. Where each trade has its own 3D model, stored locally on various engineers’ computers, or perhaps on a network folder. [Read more…] about BIM Earthing Design – What Does the Future Hold?

04/10/2016 By Ian Leave a Comment

BIM Earthing Demystified… Cutting through the endless jargon

BIM earthing?

If like me, you’re a little confused about what BIM REALLY means. This article is for you. It covers some of the misconceptions and demystifies a few uncertainties – without the Governmental jargon!

Let’s start with the basics…

BIM Earthing Demystified…

26/09/2016 By Ian Leave a Comment

What is Standard BS7430?

BS7430 2015 is the latest amendment to the code of practice for protective earthing of electrical installations.

BS7430 Overview

This standard is an amendment to BS7430 2011 the code of practice for protective earthing of electrical installations. It provides recommendations and guidance on meeting the requirements for earthing land-based electrical installations in and around buildings in the UK.

[Read more…]

08/09/2016 By Ian Leave a Comment

How to avoid explosive risks from surges due to lightning AND transient faults.

Lightning Protection Design to IEC BS EN 62305

During the early stages of consultations concerning the client’s Lightning Protection Design Project we’re often asked two questions:

Should the Lightning Protection Systems be separated from the Electrical Power System Earth?
What should the SPDs (Surge Protection Devices) look like?