Hi,
I carried out a test on the downstairs ring.
R1 read as 0.58 ohms
Rn read as1.39 kilo ohms
R2 read as 1.19 ohms.
A socket test of L-N gave readings ranging between 0.11 ohms through to 0.45 ohms.
one socket gave a reading of 2.30 ohms.
I have checked it and there are no loose connections, and is wired correctly.
there are 2 cables feeding it.
when I tested the L-cpc, readings ranged from 0.33 ohms to1.18 ohms.
the pre mentioned socket read as 1.61 ohms.
I have a megger 1552 mft.
other tests on it give expected readings.
sometimes when I check something a second time straight away for peace of mind, I might get a slightly differant reading.
I have put a plug in socket tester on all of the sockets, and it indicates everything is ok, and when used, nothing trips.
is there some fault with the neutral?, or is my mft in need of a check.
and just another quick question, when I tested the external loop impedence, it tripped the main switch. Could this be because of the rcd's, or do I need to disconnect the bonding for the main water and gas first, would not disconnecting them cause the test to trip.
all other tests were fine. Rcd, ramp etc.
I carried out a test on the downstairs ring.
R1 read as 0.58 ohms
Rn read as1.39 kilo ohms
R2 read as 1.19 ohms.
A socket test of L-N gave readings ranging between 0.11 ohms through to 0.45 ohms.
one socket gave a reading of 2.30 ohms.
I have checked it and there are no loose connections, and is wired correctly.
there are 2 cables feeding it.
when I tested the L-cpc, readings ranged from 0.33 ohms to1.18 ohms.
the pre mentioned socket read as 1.61 ohms.
I have a megger 1552 mft.
other tests on it give expected readings.
sometimes when I check something a second time straight away for peace of mind, I might get a slightly differant reading.
I have put a plug in socket tester on all of the sockets, and it indicates everything is ok, and when used, nothing trips.
is there some fault with the neutral?, or is my mft in need of a check.
and just another quick question, when I tested the external loop impedence, it tripped the main switch. Could this be because of the rcd's, or do I need to disconnect the bonding for the main water and gas first, would not disconnecting them cause the test to trip.
all other tests were fine. Rcd, ramp etc.