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LED lights in kitchen

Discussion in 'Electrics UK' started by Pete Jones, 16 Jun 2019.

  1. Pete Jones

    Pete Jones

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    Hello

    I'm looking to replace the LED downlights in my kitchen. The current setup doesn't work well - the lights only come on with the second or third flick of the switch and when they do, they start to flicker after a short time. I found out that this is down to the current system using a transformer, rather than an LED driver.

    I purchased a driver from Integral LED (50W Constant Voltage LED Driver, 200-240VAC to 12VDC:

    https://integral-led.com/products/d...tage-led-driver-200-240vac-12vdc-non-dimmable

    Plus six LED downlights from the same company:

    https://integral-led.com/products/d...ed-downlight-round-white-insulation-guard-and

    I'm going to fit 5w bulbs in each, so that will be 30w total.

    Now, rather than faff around in the loft, I thought I'd see how they work by wiring one LED and the driver to an ordinary 3-pin plug. Thing is, the light doesn't come on. I tried two lights in series and still nothing. Current is going into the driver OK and coming out the other side.

    Is there a minimum wattage that should be in the circuit for them to light up? If not, any other ideas on what could be wrong?

    Cheers
    Pete
     
  2. SFK

    SFK

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    Pete,
    1) You do not wire bulbs in series (which suggests one single wire going in a big loop). The should be in Parallel (which suggests one double wire, going to the first bulb and then (if 12V dc) connecting to the +ve and -ve and then going to second bulb and connecting to the +ve and -ve, and so on until last bulb, with no wire looping back).

    2) Some drivers do need a higher Wattage before they emit, BUT ......

    2) Your link
    https://integral-led.com/products/d...ed-downlight-round-white-insulation-guard-and
    only shows the Bulb housing, not the bulb. So I cannot determine if you used 12V (dc) or 240V (ac) bulbs.
    And I note that this spec sheet for the bulb housing mentions MAINS voltage, suggesting that they are being used with 240V (mains) bulbs.

    Please can you confirm what
    >> type of bulb you are using... Is it GU10, MR16, etc?
    >> voltage bulb you are using... Does it say 240V (ac), 12V (dc) or 12V (ac)?
    >> suggest you read the side of the bulb itself to see if any writing?


    SFK
     
  3. Pete Jones

    Pete Jones

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    Thanks for the prompt reply. The bulbs are 240v.
     
  4. winston1

    winston1

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    Well of course they won't work on 12 volts then. Take the driver back and connect them (the lamps) directly to the mains 240v supply.
     
  5. SFK

    SFK

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    Pete,
    Okay sorted - you have identified the issue.
    Then the bulbs you have need wiring directly to the mains without the LED driver.
    You do not need the driver with those bulbs.

    Note that best to use the correct rated wire and ensure good earth when using these 240V bulbs.
    If not within your experience always best to get an electrician to do this.
    SFK
     
  6. Pete Jones

    Pete Jones

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    Ahh, fantastic, thanks!
     
  7. SFK

    SFK

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    Pleasure.
     
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