Firstly I'd like to take this opportunity to wish our Clients, friends, students and Blog subscribers SEASONAL GREETINGS and a very prosperous New Year.
I'm actually in Gibraltar writing this post completing a personal goal of mine. That's topping up my sailing qualifications in preparation for my exciting challenge later next year to the Souther Ocean competing in the Clipper Round the World Race (more on that next year).
For the past few years. GreyMatters has been fortunate enough to support the rail electrification and upgrade programmes across the UK for Earthing Design. And maintaining a consistent approach across a building programme of this scale can be a massive engineering headache for all design teams concerned.
Especially, when Earthing Standards touches on so many disciplines along the way - from civils, OLE (Overhead line equipment), signals, EMC, 3rd parties, ecologies, geophysical as well as the more obvious general E&B (earthing and bonding).
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? 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
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
"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)