the-Regs : BS7671 18th Edition Online Training
BS 7671: 18th Edition Wiring Regulations – Study when you want and pass your exam when you're ready…
the Regs Guy In order to be able to sign off your own work under Part P you would need to be a member of a domestic installers competent person’s scheme ie with NAPIT, Elecsa, NICEIC etc. To join a competent persons scheme you would need to demonstrate to them that you have sufficient knowledge and experience to … Read more
What is an Approved Document? Approved documents are a series of documents that have been approved by the government and give practical ‘non-statutory’ guidance on how to meet the requirements of the Building Regulations which are a statutory (legal requirement). If you follow the guidance within an approved document there is a presumption that you … Read more
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 and as such Volt Drop will not … Read more
Key Points of… Isolation: 537.2 Every circuit / installation must be provided with a method of isolation from the supply. This isolation device should also be provided with a method to prevent unintentional or inadvertent reinstating (usually lockable). In a TN-S or TN-C-S system it is not necessary to isolate / switch the neutral conductor … Read more
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 current home wiring set up (I recently … Read more
The earth fault loop impedance (Zs) directly effects the amount of current that flows under earth fault conditions. (Ipf = V / Zs). As I’ve mentioned in a previous post (see here) fuses and circuit breakers need a certain amount of current in order to meet their maximum disconnection times. ie a 20A type B circuit … Read more
Just a quick one to clear up a few do’s and don’ts for your exam day… Do get a good nights sleep and arrive at your centre at least thirty minutes before your exam is due to start. You’ll need a calculator with a square root function (in case of formula questions) and some photographic ID … Read more
In Part 6 Chapter 62 of the 17th Edition BS 7671 we find guidance on completing a periodic inspection and test on an existing electrical installation. Section 621: 621.1contains the where, why and 621.2 to 612.4 is all of the whats and the who is mentioned in 621.5 Section 622: 622.1 relates to the frequency … Read more
Appendix 3: BS7671 (2015) RCDs From Table 3A Time / Current RCDs ‘disconnection times’ Non-delay: Residual current of 1 x its rating = 300ms max Residual current of 2 x its rating = 150ms max Residual current of 5 x its rating = 40ms max Delay ‘S’: Residual current of 1 x its rating = … Read more
The 17th Edition City & Guilds 2382-15 exam can be much easier to pass if you know these ‘secrets’… 1: The question number will tell you where to look in the book for the answer. Very useful. For example… Question 3 answer will be in Part 1 Question 15 answer will be in Part 4 Question 26 … Read more