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Timer switch with low-energy/fluorescent lights

Discussion in 'Electrics UK' started by voltaire, 14 Jan 2007.

  1. voltaire

    voltaire

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    I had been planning to use low-energy bulbs in conjunction with a timer switch, but the packaging of the switch says "not suitable for low energy/fluorescent lamps"
    Why is that, and is it true for all timer switches?
    I can't really see why it would matter.
     
  2. Taylortwocities

    Taylortwocities

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    Some timer switches use a mechanical contact or relay to switch on the device and these dont care what is on the other end. Some use semi-conductors to do the switching and these have problems with some loads including low energy/fluorescents.

    If the packaging says its not suitable then its best to believe them!

    TTC
     
  3. securespark

    securespark

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    Or you could ignore the instructions and see what happens...

    I think it's better to take the advice of TTC, don't you?
     
  4. breezer

    breezer

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    he is only asking, better safe than sorry. besides from what the other post (regarding said switch) says he cant use it anyway
     
  5. voltaire

    voltaire

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    Hee hee :LOL:
    I didnt intend to ignore the instructions and use it, I was just curious as to why it mattered. My parents have the same switch, and had thought of using low-energy bulbs, so I thought I'd try to find out what the story was before they went ahead. Until I saw the same switch in the shop and read the packaging, I wouldn't have guessed that the switch was unsuitable.
     
  6. securespark

    securespark

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    Apologies for being a tad sharp.

    I thought you were a "I've bought a totally unsuitable product but I'm going to use it anyway" kind of poster!!
     
  7. streetlighter

    streetlighter

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    Ive got two bulkhead fittings that have electronic mini-photocells i retrofitted. I use 11w energy saver lamps with no problems.
    J
     
  8. cb9002

    cb9002

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    I have a timer switch, that also says its unsuitable for use with flourescents.

    I tried it with a CF lamp anyway, and found that it the lamp flickered dimly all the time, even when the lights' turned off.

    So I'd say the manufacturer was right!
     
  9. davidl46

    davidl46

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    I can confirm that some time switches will not work with fluorescent lighting.
    I used an immersion heater time switch to control several fluorescent lights in a shop and it would not switch. I should have thought about it first but a lot of time switches will only work with a resistive load such as heaters etc, low energy lights and fluorescents are an inductive load.

    David
     
  10. ricicle

    ricicle

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    I'm sure it's all sorted after nearly 5 years ;)
     
  11. bernardgreen

    bernardgreen

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    For the OP it will ( maybe ) solved. By it still happens far too often with these modern improvements to lighting.
     
  12. Taylortwocities

    Taylortwocities

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    David stay behind after school tonight and write out in your best handwriting:-

    I must not ressurect old topics, it is complete waste of everybody's time. I am sorry I will never do it again.

    I must not ressurect old topics, it is complete waste of everybody's time. I am sorry I will never do it again.

    I must not ressurect old topics, it is complete waste of everybody's time. I am sorry I will never do it again.

    I must not ressurect old topics, it is complete waste of everybody's time. I am sorry I will never do it again.

    I must not ressurect old topics, it is complete waste of everybody's time. I am sorry I will never do it again.

    I must not ressurect old topics, it is complete waste of everybody's time. I am sorry I will never do it again.

    I must not ressurect old topics, it is complete waste of everybody's time. I am sorry I will never do it again.


    [​IMG]
     
  13. DIYnot Local

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