Discuss Reversed Tails at Board in the UK Electrical Forum area at ElectriciansForums.net
Yep agreed. I deleted that bit in the meantimeit looks to me that the B40 mcb is being fed FROM the rcd in question... and another rcd feeding the next lot of breakers.
Can we see photo of other end where (presumably) the main switch is too please?
Fed from main switch in 16mm T&E so no excuse there.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.
Assuming they are swapped, then you MUST correct them!Apart from swapping them over, what would you do if you came across Live & Neutral tails reversed at the consumer unit?
I'm also intrigued by the S-Type 100ma RCD, whether it is there simply for discrimination, or because it's TT....in which case the 6mm main earthing conductor could conceivably support the bonding.That 16mm T&E is atrocious the way it's been left in the meter box. And I assume there's no main bonding requirements as the only earth to the CU appears to be the 6mm of the T&E.
We would need more of a picture of the supply end to see if that goes to a rod or is somehow attached the the supply cable/cut-out.I'm also intrigued by the S-Type 100ma RCD, whether it is there simply for discrimination, or because it's TT....in which case the 6mm main earthing conductor could conceivably support the bonding.
Be careful! I came accross this on a job a few years ago, so swapped it back around.
However the boiler PCB board went BANG when i re-energised.
Seems plumber had obviously discovered the incorrect polarity, so rather than getting it rectified, he swapped the polarity in the FCU ?
So when i corrected the polarity at the DB, the boiler PCB then got reverse polarity!!!
It is a C1 case though, the most serious category of errors listed for any inspection.This is exactly why I would not just swap them over.
I’d get permission/price approval from the landlord/agent before making any changes so that you’re not liable for any issues.
Realistically no normal equipment should be damaged by a L-N swap itself, as it either implies some failing in the insulation or it has some very unusual functional earth feature (like some RCBOs). That is the reason for doing IR testing L+N to E as all "live" conductors should be adequately separated from the CPC & Earth.Could end up being an expensive favour.
Reply to Reversed Tails at Board in the UK Electrical Forum area at ElectriciansForums.net
We get it, advertisements are annoying!
Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.