Electrical Earthing Post List

27/11/2019 By Hugh Leave a Comment

Comparison between XGSLab and CDEGS

In his previous blog, Ian explained our decision to work with XGSLab, on the basis that it is an equally capable tool as CDEGS, that is much easier to use. In this blog, I’m going under to hood, so to speak. Comparing CDEGS with XGSLab to show you some real-world examples where CDEGS and XGSLab give almost identical results.

Therefore, in all of these examples, we have completed and verified the earthing design for these sites and found good agreement between the modelled results and the post-installation measurements. On this basis, we can say that XGSLab matches CDEGS for accuracy, and both tools have good agreement with the real-world measurements.

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30/10/2019 By Ian Leave a Comment

Why Ground Testing is Important to Maintain Adequate Grounding And Bonding

Ground testing is typically performed in two stages. The first is conducted during the construction of a building to ensure proper installation of the electrical system. And the second involves routine ground testing to ensure the ‘actual’ arrangements perform as ‘predicted’ at the design stage. Thus, to avoid costly and fatal errors.

What is the Difference between Grounding and Bonding?

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26/09/2019 By Ian Leave a Comment

Earth Testing Procedures in Urban Environments

Electrical earth testing can be a real challenge in built-up areas. Not only are there very few soft areas to deploy the test probes, but underground cabling and conductive structures are everywhere. These two factors massively affect the measured readings leading to measured values that bear no relation to the actual electrode tested. Therefore, what follows is the Earth Testing Procedure Greymatters adopts.

Step 1

Follow the guidance in HSG47. The city or town’s infrastructure produces large amounts of in-ground noise and interference. Mitigation by reading buried service/cable records; observing signs of previous excavations; and use a cable avoidance tool (CAT) can make sense of where the structures are.

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09/08/2019 By Ian Leave a Comment

Earthing System Design Procedure A Probabilistic Approach

What are the procedures for creating an HV Earthing System Design? Also, how might these differ from an LV Earth design?

Firstly, although the principles underpinning HV and LV earthing are similar, the approaches are very different.

Probabilistic Approach

The first huge difference is the recognition that HV electrical earthing design is probabilistic in nature. Whereas LV earthing is far less so.

What do I mean?

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31/07/2019 By Ian Leave a Comment

What is an Earthing System – A Definitive Guide to Earthing Grounding Systems

In Electrical Engineering terms, earth (or ground) is the point of reference in an electrical circuit from which the voltages are estimated. The earthing system or to our friends over the pond; grounding system also has the function of providing a common return path for electric current through a physical connection to the geology. In an electrical installation, an earthing system or grounding system electrode connects specific parts of that installation with the Earth’s conductive surface for safety and functional purposes.

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Electrical Earthing Post List

What is the Difference between Grounding and Bonding?

Step 1

Probabilistic Approach

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