In this video from LearnElectrics we will look at an important subject for 18th Edition exams.
Expect several questions on Zs and the associated calculations which can account for up to 10% of the exam questions. Understand how to find Zs values, how to make the easy calculations, and you are improving your exam score question by question.
We are using the Brown Wiring regulations book. BS7671 2018 Amendment 2:2022
When looking at Zs numbers, many learners will ask …
Where do they come from?
What is the start of the process?
Why are there so many things to do to a Zs number?
What is the 80% rule?
Why is the On-Site Guide different to the Wiring Regulations Book?
If you can understand the reasons and the processes, if they are clear in your mind, then you will improve your knowledge and skills in preparation for your 18th edition exam.
Learn how to find your way around the Wiring Regulations book and understand the method to follow that will lead quickly and effortlessly to the right answers.
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25 ноя 2023
