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Dimmer not working

Discussion in 'Electrics UK' started by janeh, 29 Jul 2003.

This topic originated from the How to page called Replacing a one way light switch with a dimmer switch.

  1. janeh

    janeh

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    I have just replaced a single bulb with a dimmable 3 x 40w spot light & now the dimmer will not work - Help :cry:
     
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  3. cobweb

    cobweb

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    If your new spotlight is a low voltage jobby then you'll need a new low voltage switch. Standard dimmer switches won't work with low voltage spots because the dimmer is only lowering the input voltage to the transformer (which isn't good practice at all!) not to the transformer's output, which is what you want.
     
  4. breezer

    breezer

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    question for cobweb, what do you suppose happens if you use an electronic dimable transformer?

    A) the input voltage gets reduced

    you are right in respect of an ordainairy transformer and you can not use a dimmer with this, however as it is a light with 3 x 40 watt lights, i have not heard of a 40watt low voltage lamp, 20w 50 w and higher but not 40.

    I would therfore assume that the new light has 3 x 40 mains lamps, and it has been connected wrong (it is easily done)
     
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