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  1. chris day
    Offline

    chris day Regular EF Member

    Location:
    london
    Business Name:
    Chris peter
    A client of mine has requested that I repair some old MR 16 spotlights which have heat damage cabling around the surrounds.
    I did try to convince the client to upgrade to GU 10 LED however they do not want to do this and they want me to repair the existing lighting system which is fine.
    The existing lighting system has what I can only describe as a centralised transformer system, now the transformers work fine however I don't want to repair something then later find out the client wont ever be able to replace the transformer should they go wrong, so the question is can you still get hold of these transformers .
     
  2. DPG
    Offline

    DPG Electrician's Arms

    Location:
    S Yorkshire
    Pictures are going to be useful here I think. Include any rating plates, etc.
     
    • Agree Agree x 1
  3. Lucien Nunes
    Offline

    Lucien Nunes Mercury Arc Rectifier Trusted Advisor

    Location:
    London
    You can still get pretty much any kind of transformer. If the existing ones are wirewound, and I expect so as most electronic HF ones are limited on wiring length, then they will probably outlast all the fittings anyway. They are more expensive in first cost but provided they are not overloaded or restricted in their cooling, they last almost forever. By comparison electronic types have a finite life even under good conditions.
     
    • Agree Agree x 2
    • Informative Informative x 1
  4. buzzlightyear
    Offline

    buzzlightyear still kicking sand, before pushing up daisies . Electrician's Arms

    Location:
    star command
    upload_2017-12-6_16-13-56.png do you mean these puppy's .
     
  5. Strima
    Offline

    Strima Electrician's Arms

    Location:
    St Neots
    You've given them the options and they have decided what they want, their problem when it goes tits up.

    As you can see my sympathy has run out, I blame it on the time of year...
     
    • Funny Funny x 5
  6. buzzlightyear
    Offline

    buzzlightyear still kicking sand, before pushing up daisies . Electrician's Arms

    Location:
    star command
    o well nearly xmas ! upload_2017-12-6_16-38-21.png
     
    • Like Like x 1
  7. chris day
    Offline

    chris day Regular EF Member

    Location:
    london
    Business Name:
    Chris peter
    Ow yes of course these are the beasts, they are wore wound not HF.

    IMG_2700.JPG
     
  8. Lucien Nunes
    Offline

    Lucien Nunes Mercury Arc Rectifier Trusted Advisor

    Location:
    London
    If they're not overloaded they should outlast the availability of MR16s and 10 sets of LEDs.
     
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  9. Pete999
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    Pete999 Trusted Advisor

    Top Poster Of Month

    Location:
    Northampton
    Business Name:
    None
    A day work job then?
     
  10. GeorgeCooke
    Offline

    GeorgeCooke Regular EF Member

    Location:
    UK
    This is very confusing.

    MR16 refers to the size of the lamp multifaceted reflector in eights of an inch. GU10 refers to the type of base. Most GU10 lamps are in fact MR16s.

    Then you talk about transformers so are you actually referring to GU5.3 lamps?
     
  11. Lucien Nunes
    Offline

    Lucien Nunes Mercury Arc Rectifier Trusted Advisor

    Location:
    London
    It didn't confuse me. Clearly he is talking about changing from ELV (LED or halogen) to LV LED and doing away with the transformers. Or not, in this case, as the client doesn't want to. I would always call an MR16 lamp on a GU5.3 base an MR16; in my field of work (theatre) that would be understood on all continents whereas GU5.3 probably wouldn't, or might be referring to an A-class projection lamp on GU5.3 (such as A1/259) instead of an MR.
     
    • Agree Agree x 3
  12. anthonybragg
    Offline

    anthonybragg Electrician's Arms

    Location:
    NORTHAMPTON
    Business Name:
    CHARLTEC ELECTRICAL LTD
    What was the reason they still want to keep halogen as you can get LED with the same colour output.
     
  13. Lucien Nunes
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    Lucien Nunes Mercury Arc Rectifier Trusted Advisor

    Location:
    London
    Almost! You can get a reasonable approximation to the colour temperature but the spectrum is different and in some situations the difference in colour rendering is important. I have LED general illumination over my precision electronics bench but my articulated task light is halogen, for this reason.
     
  14. GeorgeCooke
    Offline

    GeorgeCooke Regular EF Member

    Location:
    UK
    In that case you and the others need educating (and manufacturers also) as MR16 has nothing to do with the base.
     
    • Dislike Dislike x 1
  15. Lucien Nunes
    Offline

    Lucien Nunes Mercury Arc Rectifier Trusted Advisor

    Location:
    London
    We appreciate that MR16 has nothing to do with the base. You will appreciate that the question posed in this thread has nothing to do with it either - it was about transformers!
     
    • Like Like x 2
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