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  1. Karin

    2.5mm on 32A MCB

    interesting, 'cause its clearly okay in App. 15. perhaps the intention is 433.3.1 (ii), where a single outlet is deemed "not likely to carry overload current" ?
  2. Karin

    C&G 2365 Level 3 units

    hi uksrevivor, the comment about taking classes easy was intended tongue in cheek to suggest looking positively at the situation and making the most of your time to further learning. i also found it much the same as both of you (although the science section learning about motors and the like...
  3. Karin

    C&G 2365 Level 3 units

    you gotta remember that really this is a course designed for college kids to take while gaining the practical experience as an apprentice or mate on site. so some of the stuff will be a lot more relevant to them than if doing it as an adult with a full CV already. on the plus side this means...
  4. Karin

    Missing resistors

    so for 2a i get R2 = 80Ώ, sounds right i think? not got a calculator here..
  5. Karin

    Missing resistors

    reckon that dash means it's only two resistors in parallel, not three. so you only ever got to find one missing, which makes sense for the 202. i just filled a whole page of working trying to solve for two unknowns! sod that.. :D
  6. Karin

    I'm dissapointed with Ableskills

    i can sympathise there mate, i've got that big folder sitting over from me now, unopened in ages. doing it at the same place, and i did expect a bit more from the induction day to be honest, it's hard to remember much from looking at the pages they briefly showed on that day. i read Vortigern's...
  7. Karin

    110v

    as i understand it it's inherently pretty safe even under fault conditions as the shock voltage wont exceed 40V. more dangerours 230V supplies rely on protective measures that may be hard to guarantee on site.
  8. Karin

    Parallel resistors

    i think that's essentially the same, no? the written method just explains how you solve the first equation. you need the lowest common denominator to add fractions. if you've got a calculator a really quick method is to use the x-¹ key R1x-¹ + R2x-¹ + R3x-¹ = Rtx-¹ EDIT: ah the difference...
  9. Karin

    So I have been doing it wrong all these years

    couldn't really hear what he was saying, but after wondering why he was drawing round the box you suddenly see what's coming like a runaway train.. EDIT: just looked up and WTF did that cable come from haha
  10. Karin

    Wall mounted tv

    i'm willing to admit i know f all on the nuances of these high end power and sound rigs, buuuuut, thirty quid for an IEC lead then 40 quid optional extras on "burn-in" and revelatory "deep-cryogenic treatment" for said cable is, well, genius..
  11. Karin

    sunday shock scenario

    wow reading that link Marvo seems like a lot of fun to look forward to!! good job i like puzzles.. :confused:
  12. Karin

    sunday shock scenario

    presumably ground floor bathroom on some kinda clay tiles, maybe rural/farmhouse scenario. ok cool, i had read about additional local electrodes on PME, though at the time i'd read that they are no longer installed as routine as (amongst other reasons) you'd really need a fantastically low Ra...
  13. Karin

    resistance testing

    excellent, thanks for that guys. that's just the kinda information i was looking for :thumbsup: i feel like a lot of what i've learnt so far from college is "press this button and record the infinity result", which isn't all that helpful when faced with real world fault finding. actually...
  14. Karin

    sunday shock scenario

    ok so this is a scenario that i read on another forum that interested me. the solution wasn't mentioned. shock received from shower tap while standing wet feet on tiled floor. testing from the tap (PME earth via bonding) to a screwdriver in the garden (true earth) showed a potential difference...
  15. Karin

    resistance testing

    afternoon all, been reading up on testing and just wondering about the different types of testers and how they work.. insulation resistance - creates a potential difference across two conductors and measures leakage current to calculate resistance in MegOhms? low resistance ohmmeter - i've...
  16. Karin

    Power factor confusion

    ..and northerner's.. :p in fact, gaz, if you know how much creamed beer you have, and the extent of the 'northern tax' on it, you can calculate total disappointment with a pythagorean power triangle.. :cool::D
  17. Karin

    I Think I May Have Found Free Renewable Energy

    that wikipedia link is quite good too. though somehow it led to far too many hours last night being lost to entropy and some cat in a box.. goddamn physics..
  18. Karin

    I Think I May Have Found Free Renewable Energy

    this could keep going forever in a loop (perpetual m.. ?) until you read and understand the answers. instead of asking for each specific idea to be disproved, try to understand the physics (that has been explained very well). then when you understand (accept) that it is impossible, you will be...
  19. Karin

    AM2 - anyone recently done it?

    i missed the responses to this. just to confirm then, is there a reason for wiring the neutral to the switch (other than that it might be easiest)? i had thought it might be so one is available for future additions to the circuit but then of course at one switch you have a neutral but only a...
  20. Karin

    Little Teaser For The Trainees :-)

    ooh nice, i like this idea. very cool

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