Reversed Tails at Board

[wicksygas]

Apart from swapping them over, what would you do if you came across Live & Neutral tails reversed at the consumer unit?

 

[littlespark]

take the original installer round the back and explain, harshly, why it might be frowned upon.


wheres the other end of the tails? Ive seen it when they only had brown, so used brown for both and taped the ends blue on the neutral, but not just swapped over.

 

[timhoward]

Test and Test again.
Check incoming Blue to incoming Earth is 0v or negligible and incoming Brown to supplier Earth is 230v.
At that point, having triple checked everything, and all connections in CU and any sub boards I'd swap them.

Deleted 2nd bit - didn't spot it was an RCD on left.

 

[littlespark]

it looks to me that the B40 mcb is being fed FROM the rcd in question... and another rcd feeding the next lot of breakers.

 

[timhoward]

Deleted

 

[timhoward]

it looks to me that the B40 mcb is being fed FROM the rcd in question... and another rcd feeding the next lot of breakers.

Yep agreed. I deleted that bit in the meantime

 

[timhoward]

My eyes really aren't working tonight.
We seem to have an S type 100ma RCD main switch, then a downstream 30ma RCD?

 

[wicksygas]

Can we see photo of other end where (presumably) the main switch is too please?

 

[wicksygas]

take the original installer round the back and explain, harshly, why it might be frowned upon.


wheres the other end of the tails? Ive seen it when they only had brown, so used brown for both and taped the ends blue on the neutral, but not just swapped over.

Fed from main switch in 16mm T&E so no excuse there.

 

[pc1966]

Unless the DNO head is wrong, that is a C1 fault for reversed polarity!

Have you actually checked the polarity at the CU? (i.e. L-E has 230 volts, N-E practically none)