Category: Real World Applications

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The 17th Edition Has Still Got Legs

The 17th Edition has still got legs… Although the 17th Edition of BS 7671 is due to be replaced by the 18th Edition in January 2019, the 17th Edition is relevant today and will still be as relevant long after that date. The main reason for this is…

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Installing a Shower – Electrically !

Wiring a Shower. Perhaps one of the easiest circuits to install is the one that feeds a shower. Although it’s just a simple radial circuit there are a few pit holes you’ll need to avoid. We are going to assume that we are dealing with a domestic installation

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Question from a student

I have recently signed up for your 17th Edition course and just completed a first fairly quick run through the book with your slides. Will now start again being more thorough and start going through the workbooks. As I have gone through the regs I have “tested” my

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Earthing Socket Back Boxes?

Just a quick post about a question that is often asked… “Do I need to earth the metal back box for a socket?” A metal back box for a socket would be classed as an exposed-conductive part and as such it needs to be earthed. If the back

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Domestic Maximum Demand

BS7671 Part 3 Chapter 31 Purpose, Supplies and Structure 311 Maximum Demand and Diversity Regulation 311.1 …….. In determining the maximum demand of an installation diversity may be taken into account. What this means is that not everything will be switched on at the same time and we can

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Risk Assessment Basics…

Companies have a legal duty to ensure that suitable arrangements are in place to manage health and safety. Documented risk assessments must be made if the company employs 5 or more people and these records must be kept. Basically: Assess the possible risks. Determine the possible consequences. Who

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Bond This or Not?

Let’s have a look at a real world situation. A simple one really but let’s have a look at some of the Wiring Regulations that may apply. A three story steel scaffold is being built on the outside of a building to complete some renovation work. There will

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