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In this video from Learn Electrics, we will look at the differences between the common earthing systems, the things that you need to know when testing ZE. Although the testing of ZE is similar in each case, as we have shown in previous videos, there are physical differences between these systems: and it does affect the earth path for fault currents.
Some of the more frequent questions that we have been asked have included …
What is Ze?
Which part of an electrical system is Ze and which part is Zs
Why is Ze so very different in TT systems and is Ze different between TN-C-S and TNS systems?
In fact, what is a TNCS system
So in this video we will address these questions
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This is video No.166 on our KZfaq channel where we have videos on a wide range of electrical topics.