In my new house which has been recently rewired I went to replace the outside light, in trying to find out where the cable terminated I discovered 240v between Live and earth in addition to live and neutral. This would suggest that a neutral wire or connection is touching earth, probably onto a metal lightswitch or socket back box.
I disconnected a few light switch earth wires and kept checking, with both ends disconnected it showed 0v with live, hopefully this is telling me that the cable is okay. After a few of these I checked a ceiling rose, the earth to the switch was okay, the other 2 cables I assume are the lighting ring, one earth showed 240v with live the other showed 130v with live.
This is confusing so I stopped, should I approach this from the consumer unit on a circuit by circuit basis, if I can't find a solution soon I will call in an electrician.
Any clues or troubleshooting tips before I do this would be appreciated.
I disconnected a few light switch earth wires and kept checking, with both ends disconnected it showed 0v with live, hopefully this is telling me that the cable is okay. After a few of these I checked a ceiling rose, the earth to the switch was okay, the other 2 cables I assume are the lighting ring, one earth showed 240v with live the other showed 130v with live.
This is confusing so I stopped, should I approach this from the consumer unit on a circuit by circuit basis, if I can't find a solution soon I will call in an electrician.
Any clues or troubleshooting tips before I do this would be appreciated.