Sunday, 15 July 2007

C&G 2391 Inspection and Testing Exam Date Getting Closer

The C&G 2391 Inspection and Testing Exam is this coming Thursday. I have been going through the past papers and timing myself and believe I must be missing something with my answers.
Part A which should take a hour to complete is taking me 20 to 25 minutes tops!!
Part B which should take a hour and half is only taking 30 to 45 minutes!!!

Some of the model answers to the past papers are almost the same answers to what I get. The keywords are there but perhaps in a different part of the sentence to those of the model answers. what could I be missing?

I can assume that the C&G are allowing the remaining time for thinking since I would not call myself a super fast writer, especially with a pen and paper.

I have been looking through the adverts for testing instruments to carry out inspection and testing of electrical installations. I wondered about whether is would be wise to get seperate instruments but soon dispelled this notion.

  • A multifunction instrument is initially cheaper to purchase.
  • The calibration cost is not that much dearer for a multifunction unit than the cost for a single funtion instrument.
  • If I lose a function or else a single instrument packs in, I cannot carry out the inspection either way so no advantage either way.
  • Some manufacturers claim that it is easier to use seperate instruments since there are not so many dials. I think that if someone is competent to carry out inspection and testing then a few dials are not going to be too taxing.
  • Having worked on some large industrial complexes the last thing I want is 6 seperate boxes to have to carry around, plus my tools.
  • One set of batteries to replace or carry spares for rather than 3 just in case 50% of the single testers decide to get flat batteries half way through a job.

My conclusion would be a multifunction unit for the reasons given above. Now do I need the extras?

Phase rotation is a must for me having an industrial background, since it can cause damage when large numbers of motors all go in reverse!!!!

I have never had to carry out an Earth Electrode Test but can forsee the day coming when I need to check on an 11kV/400 Volt transformer earth connection.

You ever worked on a construction site or one like i,t with water sludge dirt oil and grease all over the place? If so, then like me you can see the benefit of being able to record the results to download later. Ever dropped your notebook in dirty water and know all your results are lost?

I want an IP67 rated multifunction tester that can be dropped from 3 metres, if only one was made. So will have to settle for a shower resistant one.

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