I agree "better safe than sorry." The reason I brought it up is because my son is an electrician with a lot of experience on new builds as well as the consequences of bad wiring. That's why I brought it up. If that's home-job wiring that hasn't passed inspection, which the proximity to the corner says it may be although I'm not aware of Australian building requirements, then it could be implicated in the problem. The OP is not the person this happened to, btw, and its my understanding does not know these particulars. I, however, just happen to be interested in them as I would be in any user-error.