Yea but, if you draw a vertical line down the centre of a circle that will form two D shapes.
More proof that D is the correct answer, innit tho.
Yes but if you then separate these D's and place one on top of the other it then becomes a B.
Yea but, if you draw a vertical line down the centre of a circle that will form two D shapes.
More proof that D is the correct answer, innit tho.
Yes, it's incomplete, but it's still correct. The question therefore has two 'correct' answers - which it shouldn't have. For that reason, it's a bad question.It's incomplete.Many of us (including me) accept that argument as to why B can be regarded as a correct answer. However (give or take all the unnecessary fuss about the phrase 'supply undertaking') in what sense do you think that answer D, in itself, is incorrect? Let's face it, as you say, by virtue of the note in Table 54.8 it is effectively part of the other answer which you believe to be correct - so I can't really see how it can be incorrect itself.
Indeed. That's why gardeners, builders, carpenters etc. etc. have traditionally used a loop of string and a couple of stakes to create a right angle.Did you know that if you draw two lines, one out from each end of the diameter, to meet up on the edge of the circle (to form a triangle) then wherever they meet, the angle where they intersect is always 90 deg.
People old enough to have been brought up on earlier editions of BS7671?How many people would ever use the phrase " I'm just going to contact the Supply Undertaking"....... ?
I certainly agree that not many people would say it. It is a bad question and, in addition to the fact that it has two correct answers, another reason for it being bad is that it uses terminology which, although correct, is very rarely used in 2011.They might say " I'm just going to contact the DNO/REC/Electricity board/supplier "etc etc - but 'supply undertaking' ? Do me a favour !
Yes, it's incomplete, but it's still correct. The question therefore has two 'correct' answers - which it shouldn't have. For that reason, it's a bad question.
Contacting the "supply undertaking" would only ever be considered if the installer suspected the table was not valid. The table points you to this fact.
How many people would ever use the phrase " I'm just going to contact the Supply Undertaking"....... ?
I can't answer that but, as I said way back on page 2, the most likely place to see that language still being used these days is in legal circles. I just quickly googled it, and found some 2011 draft legislation which still talks of "supply undertaking".The modern DNO is still the supply undertaking, even if not referred to explicitly as such in the current edition of BS7671.
(When was the term dropped anyway? I no longer have a copy of the 15th edition in which to check, but it was used throughout the amended 14th edition, so was most certainly still in "the book" until at least the early 1980's.)
What some people seem to be missing is that if the examiners deliberately used "supply undertaking" with the intention of marking it as 'incorrect' on the basis that (although correct) it's not a term in common use these days, that would be yet another reason why it's a very bad question.
If it's incomplete it cannot be correct.Yes, it's incomplete, but it's still correct.
No it doesn't.The question therefore has two 'correct' answers
No it isn't.For that reason, it's a bad question.
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