Nope - it happened as the screw touched the metal on the box - definitely no cables nearby!
We are having problems with one socket which my husband has changed the front plate on. When he tried to attach the new front cover it singed the screw and blew the fuse. What could be causing this?
Possible a wire has been damaged by the back box and when the cover screw touches the back box it earths it hence the fuse blows.
None - what would you suggest?? That’s the type of help we need O guess xWhat tests has he done to verify the wiring is correct?
Oh yes it will if there is a voltage imbalance between neutral and earth. Seen it loads of timesIf its a neutral it will not trip the rcd or RCBO until some current is drawn (though it could be as little as 30 ma if the rcd trips at 15), also it sounds like a spark occurred at the 3.5mm stud suggesting a short circuit.
this assumes its been wired correct and not live (line)to the cpc terminal and earthed back box