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confusion

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  1. G

    Confusion on earth potential and continuity in bathrooms

    Hi, I'm new to the forums so am not sure if this is the right section for these questions, but it appears to be a good area to place them. I'm pretty new to learning about electrical installation, and as i go along, i realise there's still some gaps in my understanding which I can't seem to...
  2. T

    Testing 2 new circuits on a sub main - Confusion over test sheets

    Hello! I am going to be testing 2 new radial circuits later this week. I have just printed out some test sheets and have been reading through them and ive got a little confused! (It doesn't take much) The circuits are on a new single phase board, fed from a three phase db. It is on a farm...
  3. saucyjack

    Spur calculation confusion!

    Hi guys, I wonder if someone would be kind enough to help me understand the answer to this question from a well known guide-book on 'Inspection, testing and certification of Electrical Installations', 'cos I can't work it out for the life of me! Q: A ring circuit is wired in 4mm2 singles in...
  4. B

    fire hoods in loft space,, downlight confusion!

    Hey guys, i got asked to check out someones lighting in their massive bathroom!!! it was huge, but anyway they had 6 normal non fire protected downlighters installed. I got up into the loft space, two of the transformers had gone and one of the ceramics had worn out. I even noticed on top of...
  5. C

    DB fed from confusion?

    Scenario is;- Single Phase DB-3(for identification purposes) fed from link blocks Link blocks fed from 100A Isolator and also feed a Single phase Wylex old isolator protected by RCD Link Blocks consist of CPC---Phase 1---Phase 3-----Neutral These come from 100A Isolator mentioned above (3 phase...
  6. R

    P.M.E earthing and bonding confusion.

    Visited a building today which is used for sheltered accommodation. It is Split into 3 separate flats each with own board. There is only one shared Gas meter supply and water stopcock at the entrance serving the whole building which are both main bonded using 16mm earth back to the main intake...
  7. G

    confusion re lighting in my newly aquired shop PLEASE HELP

    hi there, im about to open my own shop. there is currently alot of lighting cable that runs down through a suspended ceiling. i am pulling the ceiling down and putting up a new plaster board ceiling. i have a qualified electrician who has been in to look at switch boards current wiring etc. We...
  8. E

    Confusion when it comes to a test on 3 phase

    Hi, I have just joined the forum having looking around and found lots of good advice, I've been asked to do a couple of small jobs at a commercial premises shortly, simple tasks like installing a few extra lights onto a current light circuit and a moving a supply point to a dishwasher. the...
  9. T

    Trainee Contracts Manager Confusion

    Evening everyone, just a quick query regarding a vacancy that's popped up that I'm interested in. It's basically a trainee position for a contracts manager and they are offering around £24k. Being a apprentice trained spark for 10years with a fairly extensive knowledge varying from offshore...
  10. J

    ip4x confusion

    Hi everyone,I'm newly qualified and have a question that might be laughed at but I'm confused so I need to ask. I noticed the other day some 13 amp socket outlets fitted to the floor,how is this not breaking the ip4x code
  11. S

    ELCB confusion

    Hi, Completing an EICR on a local authority property. The main switch is an MK 'Earth Leakage Circuit Breaker' rated 60amp 30ma. Of course it's not a true ELCB its actually an RCD or current sensing device, see: ln5760 | eBay for an example. My question is I cant see a BS number on it, does...
  12. C

    JIB Electrotechnical Certification Scheme (ECS) JIB grading problems / confusion

    I am also having problems with JIB - currently senior graded trainee but having to go through the process of getting new card . contradictory advice about keeping my grading for 18 months if i do the NVQ which I have heard may be discontinued anyway ---- or may have to be graded as a trainee...
  13. C

    wires confusion

    no plug on end which wire is which for uk plug? Cheers :)
  14. J

    Wiring confusion fitting bathroom fan

    Hey guys Complete newb here - our bathroom had a fan which was connected to the light and timed to run over. All worked okay except the fan bearings gone so am trying to replace. I took the old one down without looking at wiring, and have fitted new one as per instructions. However when turn...
  15. whinmoor

    BBC Report - Confusion reigns in green revolution

    I think this gives a reasonably accurate snapshot of the sector. How many of us can empathise with the guys in Norfolk? "Sean recalls that the climate change minister Greg Barker once said that he wanted to avoid a 'boom and bust' cycle in the young renewables sector. But that's exactly what...
  16. L

    Confusion On Qaulifications....

    Hi, i am confused on what i can do with my qaulifications and was wondering if anyone can give me some quidence..... I have NVQ level's 2 and 3, i took the 2330 course at college. I have 5 years experience in the field, and also what will my AM2 give me. And when can i sign my own work off...
  17. M

    AC confusion.

    On the negative half cycle when the current is flowing in the opposite direction I.e through the neutral. There is no voltage going through the neutral is there. It's just the current that alternates. Not the voltage??
  18. T

    Transformer Centre Tap Confusion

    Hi All I have always had a problem with the idea of a centre tap on the secondary windings of a transformer being tied to to ground. I understand the reasons this is done and why it works apart from the fact that i would expect the centre tap of a winding to have given ptential differance from...
  19. 0

    First proper test and inspect today. Confusion.

    Hi there, Done a fuseboard change today, but getting a bit confused with the Ze and Zs tests Where are these tests done? At the DB main tails incomer, at the origin (sweated earth on incoming cable) It is a TN-S supply and i have a 3 lead L-N-E megger loop tester. Getting a bit confused aswell...
  20. D

    Confusion with prospective fault current test

    Hi guys, Been getting a bit of practice with my new Metrel MI3000. Most functions are fine, but I'm a little confused by the Z Loop impedance test. In the book, it shows the Line, Neutral and PE probes being connected to their respective terminals on the board. When I do this and press test...

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