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  1. M

    Pics of my electricty supply/cu - comments/advic please

    AAAhhh this picture makes it clearer, its one of those "Pointless boxes" often used around the 1980's to make unknowing customes feel there getting more equiment for there electriciy bill..lol
  2. M

    Earth bonding to gas and water

    Its definatley ok to run you gas bonding from the main earth terminal.
  3. M

    big red book

    i would use the three core swa for L,N & E and use glands to pick up the armourings as well, i've been trying to find a document i read on hot tubs someone mentioned using the armourings as a second earth, but cant find it and i dont remember why they suggested it, as long as the circuit is rcd...
  4. M

    big red book

    for VD you need to refer to table 6D2 in the 17th editon it will depend on your cable size for refernce method C,F (clipped direct,on tray of free to air) the common values for guidance are 1.0 44mV/A/m 1.5 29mV/A/m 2.5 18mV/A/m 4.0 11mV/A/m as for cable calcs, havent got my red...
  5. M

    rubber cables (no earth)

    Good advice, then if the all knowlegable customer feels that your tellin professional porkys she can take your report to someone more godlike than yourself for a second opinion, but i have always found in the past if you present them with a nice shiny certificate filled with such words as...
  6. M

    Extending outside power

    Hi cookiemonsta, you really need to be looking at installting a new circuit for your shed and stables, even pushing the regs and safety to one side for a moment if your outside socket is on a swiched fuse spur on the inside of the house you'd be running your shed and stables on a 13a fuse, a...
  7. M

    Power buzzing after 5pm, help please!

    have a look for any neon signs on a local chip shop or pub, it may not be lit but still being turned on every night
  8. M

    "Calibrate" dimmer switch

    i must admit i noticed the same when i bought the megaman dimmable gu10's they are very slow. after a little sampling with different dimmers for the amount of lamps i needed to drive they worked out great and save the customer plenty.
  9. M

    Radio 2 CFL and dimming?

    http://www.tlc-direct.co.uk/Products/LASD20BC.html?utm_source=froogle Hi ericmark, there are quite a few about that work on stadard dimmers, i understand what your saying about the flicker rate on some lamps being altered to dim them, these ones i've shown above are ok.
  10. M

    Meter 40A supply 60A?

    i like your thinking ...lol if thats the case im getting em to downgrade my meter.
  11. M

    big red book

    sorry missed off the first question. clipped direct would be for example a clipped cable accross a joist in the roof or down a wall, not inside a wall. but i can see your point about free in air as this would suggest hanging a cable between two locations not supported by anything i.e between...
  12. M

    big red book

    the difference between magnetic and non magnetic armoured is the armourings, non magnetic is aluminium and magnetic is steel. Aluminium Wire Armour (AWA) is used in single core cable because it is non-magnetic. When an electric current passes through a cable it produces a magnetic field (the...
  13. M

    Sockets Ring Wiring

    Hi Peter, firstly you do understand that under Part P regulations the work you are about to undertake will all be notifiable as it is a new circuit. as for the mixing of colours, you really should replace the legs down to the CU, as this will be a new ring, by leaving in the old legs you will...
  14. M

    Were scratching our heads

    Sorry RF lighting, it was a proteus RCD.
  15. M

    Were scratching our heads

    i know, i've sent a message to the robin tech guys to see if they have come accross this before, my dads a 40 year time served sparky and he has no answers either. replaced it with a new one again yesterday and its tested out fine, so did all the other flats so why just those 2 rcd's ???? i...
  16. M

    New 10.5Kw Shower - Help please

    sorry if i repeated what was said above i hasd lunch mid way and didnt read flameports answer.
  17. M

    New 10.5Kw Shower - Help please

    Hi aw11star, Firstly by the sounds of things i would get on with that rewire as soon as possible, especially if you running on rubber. as a quick fix i would definatley change to a 45A cartridge MCB. when you rewire it will go on the RCD side of a split load board it will not need its own CU...
  18. M

    Cooker question

    I think the best way for this would be two seperate feeds both with 16A protection on 2.5mm T&E, you cant really put a seperate circuit in for both as it would have to be a ring on 32A and at 15A per unit there would be no way of protecting the individual ovens as fuse spurs only go up to 13A...
  19. M

    Were scratching our heads

    my point exactly, i pluged in the Loop tester, clicked the test button, there was a low buzz from the CU and it gave me a reading of 0.37 then my junilec shouted me in and the RCD was smoking. we had an emotional burial before fitting a new one they we brutally murdered the second. i've had to...
  20. M

    Were scratching our heads

    Hi there all, got a bit of a problem today, happily testing some flats when doing my earth loops on a small rcd protected CU with my newly purchased Robin Loop/PSC tester (with d-lock) fried the main rcd in the board. the board and rcd tested out fine before now its fried. it doesn't even trip...
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