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Topic Title: New City and Guilds Exams Topic Summary: Does Anyone Have Any Guidance Notes Created On: 21 June 2012 08:50 PM Status: Post and Reply |
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 27 June 2012 01:30 PM
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That can't be right Nobel. My logic being, it sounds a bit like my answer. 
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 27 June 2012 02:37 PM
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AndyJ is the only one who gets the marks for that question. Everybody else see Table 3.4 of GN3.
------------------------- John Peckham http://www.astutetechnicalservices.co.uk/ |
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27 June 2012 03:24 PM
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If this is an examination on the testing and inspection requirements of BS 7671, John, then table 3.4 in GN3 is simply an interpretation of 621.1 "documentation arising from initial verification and previous periodic inspection and testing shall be taken into account"
This then being the evidence required to ignore the relevant test described in chapter 61 (612.2.2) prescribed in regulation 621.2. Personally, I don't see why just RFC continuity is acceptable as being "avoided" - the logic could well apply to say any polarity test - and arguablly to many other tests (notwithstanding that generally an "open" ring presents an unrevealed fault C&G basing the questions on GN3 and not BS7671 again i guess. Regards OMS ------------------------- Failure is always an option |
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27 June 2012 05:22 PM
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I think Andy J is right because.
A) It's what I put  and
B) See my previous post ref GN3 table of tests required for PERIODIC not initial. See 3.10.2 It's the way C&G like to think. Our students average 70% pass on 2391 compared to the national average (40-50%). Not being bigheaded but I think the interpretation of the questions is key and that's where we are good at helping the students. Of course it helps if they do know how to test first 
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27 June 2012 06:43 PM
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Indeed OMS the questions are based on GN3 not BS7671. As we know there are no specific tests for periodic inspection and testing in BS7671. The only requirement is to supplement inspection with any appropritae tests to confirm disconnection times are met.
For initial verification BS7671 does not even require all these fancy tests described in GN3 for ring continuity or the continuity of protective conductors. Who writes all this fancy stuff in GN3 anyway? ------------------------- John Peckham http://www.astutetechnicalservices.co.uk/ |
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27 June 2012 06:49 PM
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612.2.2 John, and in one form or other that requirement has been there since at least 12th edition ? I couldn't possibly say John - it's a committee somewhere I'm sure populated by appropriate industry professionals no doubt 
Regards OMS ------------------------- Failure is always an option |
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27 June 2012 07:23 PM
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OMS
Yes probably some old grey haired buffers. Of course you can test ring continuity without disconnecting the ends and it can be done live as well. ------------------------- John Peckham http://www.astutetechnicalservices.co.uk/ |
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27 June 2012 07:41 PM
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OMS Yes probably some old grey haired buffers. LoL - well I think there are a few under 50 - and even females I believe Of course you can test ring continuity without disconnecting the ends and it can be done live as well. For sure - I was just suggesting the requirement for the test has long been there - just the method seems to have "evolved" shall we say over the decades - smokey rooms and back of envelopes have a lot to answer for!! Regards OMS ------------------------- Failure is always an option |
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28 June 2012 09:58 AM
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How long does it normally take to mark these written exams.
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28 June 2012 09:41 PM
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For those of you that have taken the 2391 you should be able to remember the simple answer that gained you full marks for this question, no need to enter into any techno-babble and the answer was; Q: Under what circumstances can the continuity of ring final circuit conductors be omitted from the schedule of tests. A: When an electrical installation cannot be isolated, protective conductors including bonding conductors must not be disconnected. Which is, of course, not the right answer and would gain you - quite literally - no marks whatsoever. |
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28 June 2012 09:43 PM
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AndyJ is the only one who gets the marks for that question. |
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29 June 2012 02:50 PM
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Shirley some of you must have had the privilege of being an examiner for this exam, they pay you a massive £6.50 an hour,
what does it say on page 4 of the Feb 2012 Chief Examiners guidance for examiners for this question, quote please, then come back and tell me who has got nil poi!
regards ------------------------- "Take nothing but a picture, leave nothing but footprints!" ------------------------- "Oh! The drama of it all." ------------------------- "You can throw all the philosophy you like at the problem, but at the end of the day it's just basic electrical theory!" ------------------------- |
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29 June 2012 03:38 PM
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Of course you can test ring continuity without disconnecting the ends and it can be done live as well. Lol, I was under the impression that there was at least one 'old grey haired buffer' that wore high heals and fishnet stockings - although ...... Why on earth would you want to retest a rfc when you have the results from previous testing. Its clear that continual interference is likely to cause more damage. A Zs test at the socket/s would verify that the circuit was sound. Legh ------------------------- Why do we need Vernier Calipers when we have container ships? http://www.leghrichardson.co.uk "Science has overcome time and space. Well, Harvey has overcome not only time and space - but any objections." |
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29 June 2012 05:16 PM
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"Lol, I was under the impression that there was at least one 'old grey haired buffer' that wore high heals and fishnet stockings - although"
Yes only at weekends and in private! ------------------------- John Peckham http://www.astutetechnicalservices.co.uk/ |
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29 June 2012 05:30 PM
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"Lol, I was under the impression that there was at least one 'old grey haired buffer' that wore high heals and fishnet stockings - although" Yes only at weekends and in private! The rest of the time it's either a business suit or a boiler suit !! Regards OMS ------------------------- Failure is always an option |
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30 June 2012 01:06 PM
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Shirley some of you must have had the privilege of being an examiner for this exam, they pay you a massive £6.50 an hour, what does it say on page 4 of the Feb 2012 Chief Examiners guidance for examiners for this question, quote please, then come back and tell me who has got nil poi!
regards Still wrong. |
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