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LOOP IMPEDANCE & PFC – ASSESSMENT TIPS - PROSPECTIVE FAULT CURRENT ZE PSCC ZS – UNDERSTAND THE TESTS

Recently, we made a video on validating ring circuit test results with tips on what you should know for electrical assessments. This video follows on from that and looks at Earth Fault Loop Impedance testing, Ze, PFC and more. Again, we keep to very simple drawings and explanations and concentrate on what you should know before any assessment. And we will give you some tips on what the assessor might ask, the sort of things that I used to ask. All electrical training courses will include end of course exams and/or assessments that are designed to test your abilities and understanding of the course that you are completing. In this video we look at loop impedance or Ze. What is it and why it is important. But, we can’t do this without understanding the three common types of earthing systems, why they are different and how to test them. And then we will move on and ask - What is prospective fault current and prospective short circuit current, what does each one mean and where are they measured in the circuit. We will begin with TN-S earthing systems and move on to TN-C-S and TT installations where things are very different. This is video number 220 and to view all our videos type in LearnElectrics all one word into the YouTube search bar. Visit our YouTube channel where we have many more videos on a wide range of electrical topics.

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