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  1. M

    New downstairs light fitting tripping upstairs circuit.

    Yes, the fitting uses a bracket screwed to the ceiling, but i am using the existing holes for the new bracket. The RCD will trip only sometimes with the old fitting....but it 100% always trips when the new fitting is wired up...and not even when it fixed to the bracket. I suppose it is...
  2. M

    New downstairs light fitting tripping upstairs circuit.

    Thanks for the responses so far, here is a pic of the CU The switch with RCD is the one that trips. It trips even without any light fitted if the wires accidentally touch. It also trips when the last wire to the new fitting is connected. It seems fine with the old light fitting. I have...
  3. M

    New downstairs light fitting tripping upstairs circuit.

    Hi all, new to the forum but have been a lurker for a while. I have a problem that I thought I'd put to you guys first before calling in a local sparky to see if I'm missing something. I've recently tried to replace a light fitting in my lounge downstairs...here is a pic of the old fitting...
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