Thought I'd ask here on the off-chance anyone might know. I need to disconnect a wall socket in my kitchen to do some plastering and painting, however I can't figure out where its power supply comes from. I have tried turning off every switch in my fuse box, and the master switch for the full fuse box, but still this wall socket is live. I can turn off every single other wall plug or light in the entire house apart from this one! Does this mean it is being powered by somebody else's electricity? Is there a way I can safely disconnect it?