We had a new consumer unit put in by electrician. <4 years ago.
Tested and certified as safe etc.
I just extended the ring upstairs.
Formerly a single socket in double bedroom. Now 3 double sockets.
Opened up single socket- found 3 wires. Ring and spur? Confirmed which was spur. Checked continuity on line, N and E, i.e. a ring.
As guide on this site, I took one of the cables (2.5mm T+E) out of socket- cutting into ring, and connected to 30 A box. Connected this off to series of two double sockets in same room, then back into original socket (though changed for a double socket.
Then I bought a Kewtech 107. All sockets in the house and those I installed were showing as wired correctly, though throughout the house shows loop test as 'Check' ; this is amber. It means that the impedance is higher than it should be.
Q. Could this be something as simple as my not *really* tightly screwing the earth cables in the back of the sockets?
Or could the Kewtech have a threshold that Electrician would have been accepting of, but that the Kewtech spec's are not happy with.
I used 2.5mm T+E so cannot work out how I have added poor connections or so much cable to have made impedance go up.
Any advice, gratefully received....
And if any of you own the KEwtech 107, I'd like to ask you a question about using it to test RCD too!
Edit- so basically, I cannot figure out whether my extra 12 or so metres of earth cable (within the T+E) could have raised the impedance so much. All I can think of is that I have not screwed the terminals tight enough??
Tested and certified as safe etc.
I just extended the ring upstairs.
Formerly a single socket in double bedroom. Now 3 double sockets.
Opened up single socket- found 3 wires. Ring and spur? Confirmed which was spur. Checked continuity on line, N and E, i.e. a ring.
As guide on this site, I took one of the cables (2.5mm T+E) out of socket- cutting into ring, and connected to 30 A box. Connected this off to series of two double sockets in same room, then back into original socket (though changed for a double socket.
Then I bought a Kewtech 107. All sockets in the house and those I installed were showing as wired correctly, though throughout the house shows loop test as 'Check' ; this is amber. It means that the impedance is higher than it should be.
Q. Could this be something as simple as my not *really* tightly screwing the earth cables in the back of the sockets?
Or could the Kewtech have a threshold that Electrician would have been accepting of, but that the Kewtech spec's are not happy with.
I used 2.5mm T+E so cannot work out how I have added poor connections or so much cable to have made impedance go up.
Any advice, gratefully received....
And if any of you own the KEwtech 107, I'd like to ask you a question about using it to test RCD too!
Edit- so basically, I cannot figure out whether my extra 12 or so metres of earth cable (within the T+E) could have raised the impedance so much. All I can think of is that I have not screwed the terminals tight enough??