IR Test ? Weird issue N-E only

[Soulsurfer]

Hey all, just doing some tests on a small extension and have a weird issue with IR on lighting circuit, all switches left open as nightmare to strip all lamps, fittings etc.. L&N to CPC not ramping up over 7-15V DC then resetting test !

L-N on 250V or 500V 31-32 Meg
L-E 32.6 Meg
N-E won't go ! Tried all obvious things to remove out of circuit plus new mains smoke detector etc.. but still no good, any ideas ?
Only fed at moment on a B MCB 6A no RCBO etc.. head scratching or feeding something hidden maybe or a fault ?
Thanks.

 

[Wilko]

TNCS ?

 

[Soulsurfer]

TNCS ?

Yes mate.

 

[buzzlightyear]

Hey all, just doing some tests on a small extension

new or old ?

 

[Soulsurfer]

new or old ?

New extension but only extended ring from upstairs and , lights from upstairs.
All ring testing perfectly.

 

[westward10]

Why have you left all the switches open.

 

[Leesparkykent]

Yes mate.

Main switch off?

 

[Soulsurfer]

Why have you left all the switches open.

Just to avoid stripping out awkward light fittings and dimmers initially to save time before doing full tests. Also thought L&N-E would go through fine but nope

 

[Soulsurfer]

Main switch off?

Left all mains on to rest of house as they wouldn't have juice off while in there !
Just pulled related L,N,E from terminals at Cu to test

 

[buzzlightyear]

connected right!

 

[Leesparkykent]

Parallel path on that circuit you are testing. Switch the lot off an try it again.

 

[Soulsurfer]

connected right!

? The lights ?

 

[westward10]

Just to avoid stripping out awkward light fittings and dimmers initially to save time before doing full tests. Also thought L&N-E would go through fine but nope

I still don't understand why you have left them open.

 

[Octopus]

Fault finding your own install work is always the easiest......

 

[Soulsurfer]

Parallel path on that circuit you are testing. Switch the lot off an try it again.

Thanks Lee, I'll try next time when customers not being a pita !