D
dan7202
I am part way through a condition report for a customer.
The house is generally in good condition but the electrical installation is quite old.
Although the rings are properly installed as ring final circuits, the 2.5 mm t and e cable is stranded and the Cpc appears to be 1 mm rather than 1.5 mm.
I expect the r2 readings to be proportionately higher because of this but they are between 10% and 40% higher than I would have expected.
When checking behind sockets all the connections seem solid but the cables do look a bit worn (sheathing looks tired )and have possibly been subject to damp.
The r1/r2 crossover readings are also higher than expected. And I have based the expected readings for these on the measured R1 and R2 readings.
The installation seems all over the place and generally tired, there are other issues such as broken neutral and faulty shower connections which I have found. Most of the circuits have low IR readings as well which suggest to me that there is a general degradation of the cables.
Am I missing anything in terms of other possible causes.?
Any suggestions welcome.
The house is generally in good condition but the electrical installation is quite old.
Although the rings are properly installed as ring final circuits, the 2.5 mm t and e cable is stranded and the Cpc appears to be 1 mm rather than 1.5 mm.
I expect the r2 readings to be proportionately higher because of this but they are between 10% and 40% higher than I would have expected.
When checking behind sockets all the connections seem solid but the cables do look a bit worn (sheathing looks tired )and have possibly been subject to damp.
The r1/r2 crossover readings are also higher than expected. And I have based the expected readings for these on the measured R1 and R2 readings.
The installation seems all over the place and generally tired, there are other issues such as broken neutral and faulty shower connections which I have found. Most of the circuits have low IR readings as well which suggest to me that there is a general degradation of the cables.
Am I missing anything in terms of other possible causes.?
Any suggestions welcome.
