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  1. David M

    RCD Protection Question......

    As Murdoch says. Its worth getting the rcd tested electrically and also get the earthing checked. A rcd will not operate correctly if the earthing is not adequate, since it measures an imbalance via "earth leakage" current.
  2. David M

    Registration Plates, just for fun...

    I was chatting to my work colleagues late last year how I thought the idea of having a private plate makes me shudder. How, as mentioned by pirate every Tom, Dick & Harry spot the plates and then know where you are or have been. Then my missus, as a surprise, goes and buys me one for Christmas...
  3. David M

    RIP Stephen Hawking ...................

    Yes and its also pi day :) Pi Day - http://www.piday.org/
  4. David M

    RIP Stephen Hawking ...................

    Yes, an extremely intelligent guy who contributed much to the world of science and cosmology. I own and have read all of his books and enjoyed listening to his talks on space and the universe. Considering he was diagnosed to likely lose his life at much younger age, reaching 76 was a major feat...
  5. David M

    I wont say the name of the scheme provider

    Just a bloody big con as usual! "Lets sneak it in the small print and hopefully no one will notice, that way we can legally rip people off to pay for our yacht" All under the banner "We assure quality... look after the elderly, do charity work for the homeless, take care of sick kids... blah...
  6. David M

    Why so big a difference in price?

    I know a very good electrician who does nothing but domestic. I also know a very good electrician who does nothing but industrial. Both are electricians. "Electrician" is a broad term for many skill sets within the industry. We all have our own opinions on what we would class an "electrician"...
  7. David M

    Why so big a difference in price?

    There's not enough information to make judgement on the electrician. Where I live 10 hours work would equate to around £250. So assuming the job was straight forward and done correctly £460 is not out of the realms of realistic. But due to the large difference in prices I can understand why...
  8. David M

    Do I need to certify equipotenital bonding to new gas pipe

    The boss of BG
  9. David M

    Do I need to certify equipotenital bonding to new gas pipe

    Did you not know that all plumbers "gas engineers" are members of the Jedi order
  10. David M

    to those of you who number 2 in portaloo

    Now this will get me started! My pet hate is when somebody farts and you are there breathing it in. Its just foul, disgusting and very inconsiderate! I don't want to ingest somebody elses bowel contents! If you need to let off, do it in private!!!!!
  11. David M

    Dyson vacuum cleaners

    Ah... good old Henry, just a basic cleaner that does the job well! "I had a hoover once which I decided to sell, well it was just hanging around collecting dust" Tim Vine.
  12. David M

    Problem with 11KW Kiln

    Yes you are correct, I was focusing on achieving the load - 11 kw. My apologies for the confusion.
  13. David M

    Problem with 11KW Kiln

    How do you conclude that? The load is 11kw so at 240v the current would be around 45.8A , @ 230v around 47.8A There are a number of factors to consider why the rcbo is tripping. It is either going to be thermal overload or earth leakage. My initial suspicion was thermal overload since the kiln...
  14. David M

    Thank You Mr. Wetpants, You Inconsiderate Imbecile

    The scary thing is that there are people out there this thick doing work in people's homes! I was going to suggest maybe an IQ test as a competence qualification for all installation engineers. But this does not prove a person has any common sense! There is only one expression to describe this...
  15. David M

    Equipotential Bonding Explanation

    In basic laymans terms:- Electrical current will flow via the least resistive path. obviously we want to avoid/minimise current flow through the human body during a fault condition when an exposed conductive part is touched. Connecting any exposed conductive parts together (bonding) allows the...
  16. David M

    No Wonder The Joiner Is Angry!

    Must have been a plumber having a go at doing some electrics, for a change. :rolleyes::D
  17. David M

    3-phase cable calculation

    Are you sure the barn is 1000mtrs away, not 100mtrs? If the barn is 1000mtrs then for the 15kw supply you would require a minimum 70mm2 cable. But this gives you the bare minimum supply voltage so more information is required to do an accurate calc. Once other things are factored in i.e routing...
  18. David M

    Diversity factor on rewire

    No one is suggesting that you are not capable of doing the installation work. Many experienced competent people are quite capable of doing a good installation job. What is important is that you are able to do the necessary inspection & testing, be fully competent at doing the required tests and...
  19. David M

    Wooden (laminate) underlay options

    You don't really need to use foil back underlay over floorboards, its more for use on aggregate floors (cement/concrete) but its up to you. In my experience I prefer to use fibre back boards and tape the seams. This way you can just lay them together a few pieces at a time as and when you...
  20. David M

    2p + e

    I have come across old arc welders that are connected across 2 lines of a 3 phase supply. One might reasonably argue that a load connected between 2 phases of a UK supply is in fact a single phase 400 volt load, and that a true 2 phase supply with a 90 degree phase angle between phases is...

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