Strange loop values

[Jimmyb]

Im I missing something ?

been checking 2 x ring finals yesterday and found the following results :-


R1 Rn R2 R1+R2

0.36 0.36 0.45 0.18 for length of est circuit r1&rn values seem about right

0.47 0.47 1.38 0.35 cant check length with this but most be loose cpc somewhere

I thought well ill check for loose connection on both and found nothing, well I checked all accessible one/what I could find

anyone else got thoughts on this please there is only loose damaged connection

 

[tigerpaul]

The joy's of testing.

Get your patience hat on and get digging.

My bets it's the last place you check

It'll always be the last place you check, even when it's the first place you check![emoji3]

 

[Andy78]

the readings are acceptable though

Agreed.

 

[mhar]

2.5 / 1.0mm cable used? Check at a couple of sockets to see if the cpc is smaller than the 1.5 you are expecting

 

[stevethesparks]

The joy's of testing.

Get your patience hat on and get digging.

My bets it's the last place you check

I have overcome this problem by changing my methods and checking the last place first :bucktooth:

 

[sparkzalot]

Have not read all of the post but firstly id be looking for any noticable alterations and starting there. It will more than likely be a poor connection in a junction box under floor boards or connections made of behind a kitchen unit for example. Or try following a logical route using "long lead" method and notin any considerable rises in test values to pin point the location of the fault

 

[Dave OCD]

I have overcome this problem by changing my methods and checking the last place first :bucktooth:

I too thought that would be a good idea on my last fault finding mission but the fault turned out to be at the first place which I checked last. :tongue3:

 

[ipf]

Your heading states 'loop values'.....this is a continuity issue.

 

[Richard Burns]

try following a logical route using "long lead" method and noting any considerable rises in test values to pin point the location of the fault

Follow a logical route, hmm... this is not always the case; I was doing this and going from socket to socket and got the rise in resistance logically between two sockets on the same wall 2 m apart, could not find the fault, then eventually took up the floor and found the ring went from one socket off to the end of the house, round the kitchen, upstairs, into the loft, back to the kitchen opposite wall through three more sockets and eventually back down to the other socket!
Obvious really when you (fail to) think about it.

 

[sparkzalot]

Follow a logical route, hmm... this is not always the case; I was doing this and going from socket to socket and got the rise in resistance logically between two sockets on the same wall 2 m apart, could not find the fault, then eventually took up the floor and found the ring went from one socket off to the end of the house, round the kitchen, upstairs, into the loft, back to the kitchen opposite wall through three more sockets and eventually back down to the other socket!
Obvious really when you (fail to) think about it.

Upon finding nothing you should of thought 'maybe thats not the cable route' and followed the "non-logical" route

 

[Richard Burns]

Follow this lack of logic!

 

[sparkzalot]

Follow this lack of logic!
View attachment 29758

Someones had a right laugh throwing that ring in! And i fully agree with you anyway pal. Worst is fault finding when alterations have been made on a ring main and you end up with sockets going from one room to the next, back downstairs, upstairs etc etc.
The joys of our job i guess!

 

[ipf]

Follow this lack of logic!
View attachment 29758

Hope that's a weatherproof one on the roof, mate.............