Clients often ask us why we use CDEGS HIFREQ instead of XGS Labs or, any of the other packages available in the market. And our usual response is simply. “It’s the market leading product (Top 1%)”. So, I thought it might be useful to quantify exactly why it is the leading product and also why it commands a leading price. In addition, to demonstrate how some of the less capable products leave you and your staff exposed to unquantified risks. [Read more…] about Why Greymatters Consultants Use CDGEGS HIFREQ Earth Modelling Software
Soil Resistivity Testing Methods
Here is a collection of Soil Resistivity Survey Video(s). Some are from us, the team at Greymatters. And, others sourced from Youtube. Can you spot the real guys?
Here’s Ian of Greymatters (not feeling 100%) carrying out a field soil resistance survey.
Understanding Soil Resistivity is critical to Electrical Earthing System Design.
Soil resistivity is a measure of how much the soil resists the flow of electricity. So an understanding of the soil resistivity and how it varies with depth in the soil is necessary to design the grounding – earthing system in an electrical installation.
Before installing an electrical earthing system design, there are a couple of other essential tasks to tackle. One of these tasks is the ‘Soil Resistivity Desktop Study.’ This study illustrated in the Soil Resistivity Table below.
Historically installation companies may have offered to drive a single earth rod into the ground and take a range of readings from it at various depths as it is driven deeper. This approached is now considered totally unacceptable for anything other than the most basic of designs, e.g. a generator earth. [Read more…] about What Exactly is a Soil Resistivity Desktop Study?
We receive a lot of questions asking how to do a Wenner test or What are the steps in a soil resistivity testing. The key thing to take away is that once you have the appropriate equipment**… the act of ‘doing’ a Wenner Soil Resistivity Test is not that complicated. However, you must take a consistent, systematic approach to the task, otherwise, the chances of error creeping-in are high and will appear discretely, sometimes without you noticing (unless you have the means to process the data on-site during the task).
It’s imperative to understand, errors in the data at this early stage of the process for electrical earthing design can be disastrous. Disastrous for safety from the system, and disastrous from a functional perspective for the earthing system (grounding).[Read more…] about Soil Resistivity Testing – 3 Helpful Tips to Avoid The Most Common Mistakes