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  1. J

    Understanding voltage readings on dimmer and earthing

    OK, thanks to all who have replied. So I created an extension cord, turned off the power on the ring main and the lighting circuit and plugged the extension cord into the wall outlet. I connected the earth (or at least the green/yellow) wire of the extension cord to the wire protruding out of...
  2. J

    Understanding voltage readings on dimmer and earthing

    Sorry @flameport one more question, by "cannot" - you mean its absolutely unsafe to do so ? Am I right to say that the purpose of the earth wire is, should the live wire become detached from its terminal and make contact with the metal dimmer switch's body, the current would flow through the...
  3. J

    Understanding voltage readings on dimmer and earthing

    Thanks @flameport and @EFLImpudence for your explanations. @EFLImpudence the consumer unit is only a few metres from the switch so I will try your suggestion of measuring earth @dimmer to earth @Consumer unit. John.
  4. J

    Understanding voltage readings on dimmer and earthing

    thanks for the reply @EFLImpudence Sorry for the stupid question but I tried all ohms settings on the multimeter between 200 up to 200M and there was never a reading between neutral and earth terminal. However, setting the multimeter to 20V A/C I got a measurement of 0.385 V between Neutral...
  5. J

    Understanding voltage readings on dimmer and earthing

    Hello there, I am rewiring a metal dimmer switch after redecorating; before decorating there was no earth cable between the cable from the wall and the earth terminal on the dimmer. The lighting circuit is protected by a RCD but as I understand it a metal dimmer switch is class 1 so should be...
  6. J

    Earth wire in bathroom pull switch - should I connect to terminal in body?

    Hello, I have just replaced an old batchroom pull switched that had been installed about 10 years ago with a LAP Brushed steel pull switch ( https://www.screwfix.com/p/lap-6a-2-way-pull-cord-switch-brushed-steel/371cc ). On removing the old switch, the electrician had covered the earth wire in...
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