In article ,
Roger Mills wrote:
Easiest way is just to disconnect the earth wires, then find out which
one is connected to the spur socket, by probing a fixing screw on
that. If you can see which TW&E it belongs to, you have your answer.
But you do need to measure a dead short on your DVM, rather than just
any old reading.

The only problem is that I don't know where the spur goes! I don't know
whether it powers a socket or something like the cooker hood, or heated
drawer.

Whatever it is will likely be closest to this socket.

But, as others have said, if I power down, disconnect all 3, power up
again and check which 2 wires are live, I will know which is the spur -
regardless of what it does.

My way is easier. ;-)

--
*Some people are only alive because it is illegal to kill.

Dave Plowman London SW
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