C
chronyx
The usual C.U. change problem.
All circuits working except one (Ostensibly a ring circuit, once upon a time. It 'end-to-end's at the board) which seems to have a neutral to earth fault.
I was methodical so I don't believe any neutral conductors were misplaced, but even putting the two neutral conductors concerned into the small pre-RCD neutral bar that the RCD tails go to, resulted in an RCD trip as soon as the circuit was loaded, although not from merely touching them on the bar as below.
There's no continuity between either of the Neutral conductors and the 2 split load neutral bars, yet touch one of them onto either neutral bar and the associated RCD will trip.
Did as much investigation as possible after C.U. change and changeover switch install for a small back up generator.
In my roundabout way I'm just wondering if anyone has seen this before or has any tips. The circuit has been modified over the years so I can't really vouch for its condition. Just thought it was worth asking the hive mind.
One other question - would removing the tails from the RCD neutral bars so that they are electrically separate, then checking for continuity help identify a misplaced neutral? I assume no continuity would be desired.
There's a PayPal drink on offer to anyone that gives a winning answer!
Cheers!
All circuits working except one (Ostensibly a ring circuit, once upon a time. It 'end-to-end's at the board) which seems to have a neutral to earth fault.
I was methodical so I don't believe any neutral conductors were misplaced, but even putting the two neutral conductors concerned into the small pre-RCD neutral bar that the RCD tails go to, resulted in an RCD trip as soon as the circuit was loaded, although not from merely touching them on the bar as below.
There's no continuity between either of the Neutral conductors and the 2 split load neutral bars, yet touch one of them onto either neutral bar and the associated RCD will trip.
Did as much investigation as possible after C.U. change and changeover switch install for a small back up generator.
In my roundabout way I'm just wondering if anyone has seen this before or has any tips. The circuit has been modified over the years so I can't really vouch for its condition. Just thought it was worth asking the hive mind.
One other question - would removing the tails from the RCD neutral bars so that they are electrically separate, then checking for continuity help identify a misplaced neutral? I assume no continuity would be desired.
There's a PayPal drink on offer to anyone that gives a winning answer!
Cheers!
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