hitchhiker Posted November 29, 2012 Share Posted November 29, 2012 In one room in our house, when the lights are turned off there is still a 'residual' voltage of around 50 volts in the lighting ring and I have no idea how this can be happening! Anyone got any ideas? Link to comment Share on other sites More sharing options...
Crosser Posted November 29, 2012 Share Posted November 29, 2012 Check your earths. Could be induced "eddy currents" Link to comment Share on other sites More sharing options...
handypandy Posted November 29, 2012 Share Posted November 29, 2012 Just had a word with my sparky son. Although he doesn't like diagnosis without seeing the issue, he reckons that it could be that a negative from another circuit (sometimes on a stairs light) could be the source, or maybe a backfeed from a dimmer switch. Don't shoot the messenger Link to comment Share on other sites More sharing options...
hitchhiker Posted November 30, 2012 Author Share Posted November 30, 2012 Just had a word with my sparky son. Although he doesn't like diagnosis without seeing the issue, he reckons that it could be that a negative from another circuit (sometimes on a stairs light) could be the source, or maybe a backfeed from a dimmer switch. Don't shoot the messenger No dimmer switches on this ring. Not sure what you mean about the 'negative from another circuit', though - I'll look into this. Thanks ---------- Post added 30-11-2012 at 09:15 ---------- Check your earths. Could be induced "eddy currents" Just tried to find out what these are on Wikipedia but now my head hurts Can you explain this like I'm 5? Link to comment Share on other sites More sharing options...
Mecky Posted November 30, 2012 Share Posted November 30, 2012 I have a similar problem, the switch from the bedroom makes the the bedroom light come on but also gives a very small glow to the livingroom bulb. Will have a better look this weekend. Link to comment Share on other sites More sharing options...
spilldig Posted November 30, 2012 Share Posted November 30, 2012 I had a problem some years ago where I thought we were using too much electricity.I gradually switched things off and watched the meter turning more slowly.Eventually it got to where we switched everything off completely and in the torchlight the meter was still turning,It turned out to be faulty wiring, Link to comment Share on other sites More sharing options...
ChrisT70 Posted November 30, 2012 Share Posted November 30, 2012 In one room in our house, when the lights are turned off there is still a 'residual' voltage of around 50 volts in the lighting ring and I have no idea how this can be happening! Anyone got any ideas? if you have any fluorescent lighting on the cct or any luminaires with transformers or electronic ciruitry you have probably got a leakage through a ballast/choke etc. diconnect the fittings one by one and re-test. Link to comment Share on other sites More sharing options...
slh73 Posted December 1, 2012 Share Posted December 1, 2012 No dimmer switches on this ring. Not sure what you mean about the 'negative from another circuit', though - I'll look into this. Thanks Im guessing he means whoever wired the house forgot to run a neutral to one or more of your lights, so tagged one from a socket instead of running a new cable. Happens more often than youd think, the other way around as well. Link to comment Share on other sites More sharing options...
Dingus Posted December 1, 2012 Share Posted December 1, 2012 Why not turn everything off and wire everything from the 50 volt supply and run 50 volt appliances on your free electricity? Link to comment Share on other sites More sharing options...
hitchhiker Posted December 3, 2012 Author Share Posted December 3, 2012 Done a bit more investigation: - With energy saving bulbs in, there is a current of 50 volts in the neutral - With a mix of tungsten and energy savers, there is no current (I'm guessing this is because it's providing resistance) - With no bulbs in there is no current < this is bizarre!!! - we can't detect any current in the neutral from the fuse board - when all the fuses are switched off and the only one on is the bedroom lighting ring, there is still the 50 volt current in the lighting ring In the house there are quite a few strip lights which my be leaking this residual current into the system, however, with all the fuses turned off besides the bedroom one, it's still there! Any more ideas? Link to comment Share on other sites More sharing options...
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