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  1. jjjinx

    Changing light fittings - basic query

    if the bulbs are connected directly to the base unit with just a small neck it would best to put in heat resistant sleeving over all the exposed conductors, make sure that the wires are not being pinched against anything as this will degrade the insulation over time and possibly give you a short...
  2. jjjinx

    fluorescent lights

    yes fit it directly in place of the rose (replace).
  3. jjjinx

    Shower cable

    wingnot, if you do ohms law you'll see that 9.5kw shower would produce up to 39.6amps this would mean that a 30amp jb would not do. Look more towards a henly block or something suitable for 45 amps and put it in a box suitable for it, don't forget any jb must be kept inspectable. Cable that...
  4. jjjinx

    Changing light fittings - basic query

    rusti, on the first light is it flush to the ceiling? i take it its not, I would always make them flush to the ceiling as this would give greater IP rating to the light though it should be out of reach, changing bulbs puts it back in reach reagularly. The other lights it sounds like you poked...
  5. jjjinx

    Electrtic shocks from water taps

    I do understand what your saying but misguided it isn't, its physics! A common known fact that as any electrician will know whether its 1 volt or1000s it will take the most conductive path, this is why we put lightning conductors on buildings. There are a lot of varables conserning being...
  6. jjjinx

    really need some advice!

    i've got no idea mate I cert myself so not had to use em, prob around £150
  7. jjjinx

    Electrtic shocks from water taps

    The reason behind this could be that the female had a lower resistance than you guys. she might have been sweatier than the guys giving better conductivity, this is how some people survive lightning strikes because some conduct better or worse than others. Women tend to use moistiorizers more...
  8. jjjinx

    Sockets in Brick

    yeah welcome put down the sds go by hand, make sure you pre-drill the outline of the box if you didn't. if you can put in a deeper box once youve leveled by hand if poss.
  9. jjjinx

    Best way for lifting floorboards?

    rofl i like that
  10. jjjinx

    really need some advice!

    Helllo dexstar, for you NVQ you will need to be working for someone, its not impossible to do it yourself but you need to get varied work from commercial, industrial & domestic to complete the NVQ, this means satisfying your tutors who will come out and inspect your work. You need at least...
  11. jjjinx

    meter tails in cavity wall

    you haven't made your question very clear, r u saying that the meter tails are going through a wall cavity before they get to the meter from the supply fuse? if that is the question, have you thought about either sticking the tails (if possible) in steel conduit or using SWA as they go through...
  12. jjjinx

    Zs at wall heaters (off peak)

    thats fair enough but what if the Rn has a higher impedence than the R1 your getting an incorrect value possibly from a bad connection or sumit, but if your measuring R1+R2 then at least your measuring with the right conductors? I no R1+Rn is easier maths but your value doesn't include the...
  13. jjjinx

    Zs at wall heaters (off peak)

    sintra would you like to give your comments on getting R2 value? this is theoretical, if you couldn't do it by a wander lead and I'm talking radials not rings cos getting R2 from a ring is simple.
  14. jjjinx

    Zs at wall heaters (off peak)

    I don't know whether I'd go the R1+Rn route as your not measuring the conductor your going to write on the form, but saying that it would be a good indication of the R1 value if you measured the R1+R2 value calulated (1.67) it & backed it up with the R1+Rn but its a lota waffle for a situation...
  15. compare the meerkat.com.jpg

    compare the meerkat.com.jpg

    • jjjinx
    • Media item
    • Comments: 0
    • Category: Professional Electrician
  16. jjjinx

    hi sparkies

    thx guys :-)
  17. jjjinx

    Garage Supply Cable

    wat i'm guna do is replace the t+e with swa, tack a swa to the wall about 1.5 feet and then as it passes the gateway I'll lay it at the floor as its covered by decking, then I've gota either try & drill through the bottom courner of the concrete garage or take it back up through the roof space...
  18. jjjinx

    Zs at wall heaters (off peak)

    well if your forced only to record R2 then you would have to do that with a wander lead, I think you might be able to calculate it from R1+R2, R2 being 1.67 times greater than R1 provided your using T+E up to 2.5mm2 (don't quote me on that). If you do the wander lead dont forget to null the...
  19. jjjinx

    Zs at wall heaters (off peak)

    you can take the Ze from the main board and call it the origin then add the R1+R2 as rob said
  20. jjjinx

    Switching/lighting problem

    mark, let us no wat it was please mate, try testing again like des said. Might wana try disconnecting the wall lights and seeing if the circuit works fine wivout em, then test the wall light wiring & try block connecting the lights end & connecting again.

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