the snooper
getting older by the day
- Messages
- 21,063
- Location
- Hull UK
Turn off the power, remove the socket, it may be as simple as the wires have come out
Yeah that is my first plan of attack. Now I know the rest of the sockets all test out fine.Turn off the power, remove the socket, it may be as simple as the wires have come out
That is 180 degrees out to me, if my light bulb fails to work I'm not going to remove the switch to see if it works before I try the bulb, start at fault and works backwardsRight way to do it is to go back to the distribution unit, switch off at the main switch, find the earths for that ring, separate them and check they show a short - if they do, open the socket to see whether the two incoming earths (twisted together, probably) are in the earth terminal properly.
Dave H. (the other one)
It's not in the socket.If it's not in the socket that is showing no earth the next thing to check is the ones you think many be before or after that socket! If it's got no earth at 1 socket it is most likely that the wires have snapped or come loose behind it, especially if all the others are showing an earth on the ring!
Sy
Are there 2 cables to said socket ie part of the ring or a spurIt's not in the socket.
But it's not in the next one to it.
I did not fit the wiring but used a leccy who I knew at the time from shooting.
So that's 27 years ago
From recollection it was a ring main that ran round the top of the extension but was plastered over.
The ring main has spurs off. (Which are really not spurs but have an in and out.
My son remembers drilling the wall about 15 years ago and this was right above the socket and it went bang and tripped the circuit.
Removed the drill and switched power back in and assumed it just connected live and neutral momentarily.
Anyway.
I am now wondering if its possible he drilled through the earth and connected the live at the same time.
It does not explain why the socket next to it does not pick up the earth coming in from the other way (into the socket to the right of it. though) as this is the last socket before I thought the ring main returns to the box.
the earth has blown apart then and not been repaired .if the other leg has no earth its another loose cable as well or the end of a spur .My son remembers drilling the wall about 15 years ago and this was right above the socket and it went bang and tripped the circuit.
Removed the drill and switched power back in and assumed it just connected live and neutral momentarily.
Anyway.
I am now wondering if its possible he drilled through the earth and connected the live at the same time.
It does not explain why the socket next to it does not pick up the earth coming in from the other way (into the socket to the right of it. though) as this is the last socket before I thought the ring main returns to the box.
It's not in the socket.
But it's not in the next one to it.
I did not fit the wiring but used a leccy who I knew at the time from shooting.
So that's 27 years ago
From recollection it was a ring main that ran round the top of the extension but was plastered over.
The ring main has spurs off. (Which are really not spurs but have an in and out.
My son remembers drilling the wall about 15 years ago and this was right above the socket and it went bang and tripped the circuit.
Removed the drill and switched power back in and assumed it just connected live and neutral momentarily.
Anyway.
I am now wondering if its possible he drilled through the earth and connected the live at the same time.
It does not explain why the socket next to it does not pick up the earth coming in from the other way (into the socket to the right of it. though) as this is the last socket before I thought the ring main returns to the box.
If you get a good enough bang when the initial fault occurs it can blow the fault away which doesn't always show up on an insulation test, each leg needs a continuity test first to find the problemThe ring will also fail insulation test
because whoever did it thought it was ok if it still worked instead of investigating it when in reality it isnt okAfter the bang, why was it not investigated - it works so it's OK, is not a safe way to go.
Nope...the sockets below the drilling point have earth. The sockets to the right of those sockets are the ones without earth.This implies that the earth is broken in two places.
It is possible that the drill damaged both cables by hitting live and earth in one and neutral and earth in the other.
With the nature of a ring circuit the socket will still work, but will not be safe.
I would strongly recommend that you do not use the sockets which are showing no earth until this has been properly investigated and repaired.
it will if there is 2 cable breaks on the circuitNope...the sockets below the drilling point have earth. The sockets to the right of those sockets are the ones without earth.
So if both earths had been hit there would be no earth below the drilling point.
What's confusing is if it is a ring main there should be an earth coming from the right and left so breaking one side should not remove earth from any socket.
Yes I can see that's a possibility.it will if there is 2 cable breaks on the circuit
Nope...the sockets below the drilling point have earth. The sockets to the right of those sockets are the ones without earth.
So if both earths had been hit there would be no earth below the drilling point.
What's confusing is if it is a ring main there should be an earth coming from the right and left so breaking one side should not remove earth from any socket.