Checking a borrowed neutral

[loz]

changing a fuse board today, house wired in the 60s with the landing light on the ground floor lighting circuit.
Tested at 250v ins res between the neutral of the 1st floor lights and the neutral of the ground floor lights. Result was 0.04meg ohm. Flick switch for landing light and the reading jumps to >200meg ohm.

Am I right in my thinking that this is a borrowed neutral?
In my head I can see the test voltage going up the upstairs lighting neutral, through athe landing lamp, down the live through a lamp one the ground floor circuit then returning back down the ground floor neutral

 

[loz]

Is that ok ya Drama queen

Don't you two bloody start as well

 

[westward10]

So Loz is the problem clear to you now. This situation often occurs with the landing light and often that part of the circuit is wired using pvc/ pvc singles.

 

[telectrix]

So Loz is the problem clear to you now. This situation often occurs with the landing light and often that part of the circuit is wired using pvc/ pvc singles.

fortunately, there's not so many singles seen these days. i put that down to the likes of eHarmony, match, elite, and all the other internet dating sites. gives credence to the saying " a dog is not just for christmas".

 

[Nicebloke]

Wonder where else sparkburnout will troll if he's banned for a week?

 

[loz]

So Loz is the problem clear to you now. This situation often occurs with the landing light and often that part of the circuit is wired using pvc/ pvc singles.

Yeah crystal clear, I had it in my head, just needed a bit of confirmation on proving the fault, before powering the board up, which I had done but wasn't confident in myself. One thing I have learned is that things are so much clearer once it's drawn down on paper.
Both lights have been put on one mob for the weekend and I'm booked in on Monday to put a permenant live into the landing rose as well as a new switch drop and a 3 core downstairs to reinstate the 2 way switching correctly and enable me to split the circuits onto separate rcds. Shame it will be trunking drops but hey ho, can't win them all.
Thank you for your help

 

[loz]

fortunately, there's not so many singles seen these days. i put that down to the likes of eHarmony, match, elite, and all the other internet dating sites. gives credence to the saying " a dog is not just for christmas".

Plenty of fish every time. I'm happy with my dog for life, wouldn't mind the mrs just for Christmas though

 

[PEG]

...and to lighten things further,it is a little known fact,that most hallways and landings,have multiple singles in them...just usually during a party

 

[loz]

I'd love a house full of singles but we live in a modern world and I think I'd prefer twins