In a TN earthing system the cornerstone of protection against electric shock is that the protective device ‘circuit breaker’ shall not exceed it’s maximum disconnection time. For a 230 v to earth TN system (covers both single phase and 3-phase) that is 0.4 seconds (final circuits less than or equal to 32A) see T41.1 and
READ MOREThe following safe isolation procedure could save your life. If you have no experience and/or knowledge then you can’t avoid the dangers that are present and you should not be working on any electrical circuits or equipment. If in doubt always consult a competent (electrically skilled) person. Select
READ MOREHere are 6 random questions likely to show up in your City & Guilds 2382-15 exam. I’ll won’t give you the answers but I’ll tell you where to look… BS7671 does not include requirements for Have a look at Part 1 Chapter 11 Scope this is where you’ll
READ MOREOnline 17th Edition Training? Is online training for you? I have written this page to help you to decide. As a trainer who regularly teaches the City & Guilds 17th Edition in the classroom on 3 day courses and as someone who hosts and presents an online 17th
READ MORE“Every installation shall, during erection and on completion before being put into service, be inspected and tested to verify, so far as reasonably practicable, that the requirements of the Regulations have been met.” 610.1 “On completion of the verification, according to Regulations 610.1 to 610.5, a certificate shall
READ MOREEarths / Protective Conductors are the most important conductor on any installation and that’s why it’s also one of the most important Chapters in the 17th Edition. Chapter 54 Earthing Arrangements and Protective Conductors. From the various supply arrangements; TN-S, TN-C-S and TT which describe how an installation
READ MOREAs far as sockets are concerned what’s the best method to use? Although permitted by regulation 433.1.204 BS7671 the usual 2.5mm ring has become somewhat of a tradition, but maybe it has outlasted it’s use. Being involved in domestic periodic Inspection and Testing over the years I have
READ MOREOne of my favourite study days is definitely Sunday. When going through your 17th Edition online course try to put a couple of good undisturbed hours together on a Sunday. This should help massively with your studies and if you are in no rush a couple of no-stress
READ MOREAs far as the 17th Edition Exam is concerned, Inspection and Testing is not covered massively within the C&G 2382-15 course or exam and with only 4 questions in total, it doesn’t merit too much attention at the moment. However, Inspection and Testing is in my opinion the
READ MORECaution, earth shatering reveleation: The key to passing the 17th Edition City & Guilds 2382-15 exam is to be familiar with whole of the book. But when you first start and are wondering where to focus your efforts I’d go for the most relevant or important Chapters within
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