How to Size High Voltage Earthing Conductors Correctly

Earthing System Design

How to Size High Voltage Earthing Conductors Correctly

What size conductors should I use? And, is there a simple table I can use for this high voltage earthing design? These are great questions that I'm often asked. This post answers these questions together with the choice of conductor materials and jointing method within a high voltage earthing design project.

Assessing conductor size is entirely dependent on the electrical configuration and the load that the conductor must take. For example, an above-ground bonding conductor serves to transfer current with minimal voltage drop, from A to B. A directly buried conductor has an additional purpose, that of leaking the fault current/voltage into the local geology (as part of an electrode). Read More

What's the Difference between Earthing and Bonding?

Electrical Earthing

What's the Difference between Earthing and Bonding?

What's the difference between earthing and bonding? That's a question our readers and clients ask often. Also, we're asked quite a bit about earthing and bonding in general. So, there’s an unusually large amount of confusion around the term Earthing and Bonding. Or, for our friends in the states; you might come across the term grounding and bonding.

Therefore,  in this piece, I aim to clarify the difference between - what is Earthing and what is bonding and whether there is a difference.

Breaking things down into simple terms; Earthing - grounding can mean all things to all people. Hence, it is more realistic to think of Earthing as the ‘electrode’ itself. Also, known as the Earth Termination. This reference refers to the physical hardware, such as the copper conductors, rods, etc., that sits buried directly in the geology itself. Read More

Stop Feeling Overwhelmed or Out of Your Depth – [New] Online Training for Earthing Course

Acadamy

Stop Feeling Overwhelmed or Out of Your Depth – [New] Online Training for Earthing Course

Are you feeling overwhelmed or out of your depth, well stop. Test drive our new online Training for Earthing courses. And say goodbye to PowerPoint slides forever!

I don’t care how many tips and fixes there are out there on the info-web that claim to make boring training for earthing PowerPoint (PP) slides less boring… THEY ARE STILL BORING!

But here's the good news. Read More

Why Ground Testing is Important and How it Ensures Safety, Validation and Integrity

Earth Testing

Why Ground Testing is Important and How it Ensures Safety, Validation and Integrity

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 stage involves routine ground testing to ensure the 'actual' arrangements perform as the 'predicted' ones at design stage to avoid costly and fatal errors.

What is the Difference between Grounding and Bonding? Read More

Avoid death by PowerPoint | earthing system design demystified

Acadamy

Avoid death by PowerPoint | earthing system design demystified

Ever been caught in a project meeting and started to think -"what am I doing here?... I hope he/she doesn’t ask me a question. I wish I had found that training course in earthing!"

It's a disconcerting feeling being ‘out of your depth’ or not even in the right ballpark. How are you going to save face?… I know, nod a few times in the right places and maybe ask an open question back, or better still, side-swipe it to a colleague; “what do you think, Stan?” - then run away and hope no-one notices. Did it work? Yes, phew! Great save… Read More

"Working with GreyMatters has totally changed my expectations of a professional engineering consultancy firm … for the better! Technically, they were on the money! More importantly however ... they kept me updated throughout the entire project, which was so refreshing, and therefore quickly put my mind at ease that things were being taken care of." (C. Turgis)
  • subsea 7
  • Atkins
  • Siemens
  • Hydro66
  • Western Power Distribution
  • National Grid
  • BAM Nuttall
  • Rotary Building Services
  • M&W Group
  • Valero
  • Technip
  • Royal Airforce
  • PM Group
  • MOD
  • ISG
  • Ineos
  • Exelis
  • Essar
  • Deerns
  • Network Rail
  • AWE