A damaged or crushed cable seems most likely then...
Short of exotic test equipment like a TDR setup you may be stuck. Any place you could route an alternative?
A damaged or crushed cable seems most likely then...
Short of exotic test equipment like a TDR setup you may be stuck. Any place you could route an alternative?
My upstairs lighting cable was discovered to have a broken earth. This was due to the original builders crushing the cable between a floorboard and the breeze block wall. One of the other conductors was also damaged, and came apart with little provocation.
If it is a broken earth conductor it needs to be found and repaired, or the complete cable run replaced. Do not use a cable with one suspect core, there will almost certainly be more damage..
There is no reason your replacement cable has to run the same route though - it could be surface wired behind the cupboards for example to make life easier.
When I rewired my former neighbours house a few years back, I found a standard 5A junction box joining three flexes, just buried in the plaster plaster about a foot above the kitchen sink! (not sure if he owned up to that one or not ;-)
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