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Do-It-Yourself (DIY) Question & Answer Forum
Trying to find suitable LED dimmer switches
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<blockquote data-quote="Sharpend" data-source="post: 474338" data-attributes="member: 17152"><p>So let me put it simply like this. </p><p></p><p>If you were to look at the terminals under the light fitting you would find that the light has a neutral there. As there was no need for a neutral at the switch then you have a live feed to the switch then the return is the switched live as it only becomes live once the switch is operated. Therefore rather than carry a twin red cable - both cores red- the electrician has used the red and black cable for the switch drop, in this instance the black should have been sleeved with a red indicator to show it’s a live as opposed to a neutral. This as I said has probably been lost over the change from normal switch to dimmer. </p><p></p><p>Whilst your link may be true it doesn’t mean it is the case in all examples, hence why we spent a lot of time and money investing in our skill so that we know these things. </p></blockquote><p></p>
[QUOTE="Sharpend, post: 474338, member: 17152"] So let me put it simply like this. If you were to look at the terminals under the light fitting you would find that the light has a neutral there. As there was no need for a neutral at the switch then you have a live feed to the switch then the return is the switched live as it only becomes live once the switch is operated. Therefore rather than carry a twin red cable - both cores red- the electrician has used the red and black cable for the switch drop, in this instance the black should have been sleeved with a red indicator to show it’s a live as opposed to a neutral. This as I said has probably been lost over the change from normal switch to dimmer. Whilst your link may be true it doesn’t mean it is the case in all examples, hence why we spent a lot of time and money investing in our skill so that we know these things. [/QUOTE]
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Trying to find suitable LED dimmer switches
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