this is baffling.
situation is an existing rfc that has had a minor repair. a socket had been removed and the live cables left in back box and tiled over. cables were pulled back above ceiling and jointed.
prior to reconnectio in a new CU tests were done on the circuit.
now here's the baffling bit:
r1 = 0.28
rN =0.28
r2 = 0.47
fine so far, expected R1+R2 = (0.28 + 0.47) /4 = 0.1875
measured R1+R2 = 0.17 . perfeck.
then, here's the rub....
Rn + R2 = open circuit, tested at 2 points on the ring.
both R1 + R2 and Rn + R2 measured with the respective ends cross connected @ CU.
it's as if the N's are continuous but loose in the sockets but sockets were working fine before.
tester plug lead checked as OK by plugging in a socket on another circuit and live readings were normal.
as i said, a head scratcher.
situation is an existing rfc that has had a minor repair. a socket had been removed and the live cables left in back box and tiled over. cables were pulled back above ceiling and jointed.
prior to reconnectio in a new CU tests were done on the circuit.
now here's the baffling bit:
r1 = 0.28
rN =0.28
r2 = 0.47
fine so far, expected R1+R2 = (0.28 + 0.47) /4 = 0.1875
measured R1+R2 = 0.17 . perfeck.
then, here's the rub....
Rn + R2 = open circuit, tested at 2 points on the ring.
both R1 + R2 and Rn + R2 measured with the respective ends cross connected @ CU.
it's as if the N's are continuous but loose in the sockets but sockets were working fine before.
tester plug lead checked as OK by plugging in a socket on another circuit and live readings were normal.
as i said, a head scratcher.