a strange one

[thekingiam]

A flat has had water damage and called out as shower was tripping both RCDs when light put on changed light fitting as full of water and shower isolator. Still tripping RCDs so have to look in void for any connections checked cu and lights on first RCD controlled by 1mcb, checked other RCD and the two mcbs on that turn off bedroom and bathroom lights when switched off even when 2nd RCD is turned off? Checked all wording to both RCDs and looks correct.
Any ideas ?

 

[thekingiam]

Wirring

 

[trev]

Did the cables have time to dry?

 

[Megavolt]

Hi

Have you done any IR or RCD tests, if so what was the results

 

[Leesparkykent]

IR test results?

 

[thekingiam]

No tests yet going back today, dried all connection and replaced chock blocks that I could access . 2nd RCD probably damaged as mcbs controlling lights even when off. No water damage in cu.

 

[Leesparkykent]

No tests yet going back today, dried all connection and replaced chock blocks that I could access . 2nd RCD probably damaged as mcbs controlling lights even when off. No water damage in cu.

Are you saying MCB's are live even though the RCD protecting said MCB's is off?

 

[Octopus]

Hum.

IR it - if all levels are low, condemn it until its dried out.

 

[thekingiam]

The timed extractor fan not working so I me guessing that a perminant feed off first RCD lights going to that then switched by 2nd RCD lights fan full of water and causing control by both RCDs.???

 

[Octopus]

The timed extractor fan not working so I me guessing that a perminant feed off first RCD lights going to that then switched by 2nd RCD lights fan full of water and causing control by both RCDs.???

Guessing isn't the best plan. Go back and IR!

 

[trev]

Mate, without test results we're all guessing. It could be almost anything. How would your scenario in #9 have ever worked if there's been an imbalance since day 1?

 

[Octopus]

Could be water in a 2 gang switch - fed off 2 circuits from the seperate RCD's!

 

[Jonspark]

A flat has had water damage and called out as shower was tripping both RCDs when light put on changed light fitting as full of water and shower isolator. Still tripping RCDs so have to look in void for any connections checked cu and lights on first RCD controlled by 1mcb, checked other RCD and the two mcbs on that turn off bedroom and bathroom lights when switched off even when 2nd RCD is turned off? Checked all wording to both RCDs and looks correct.
Any ideas ?

I'm having difficulty in reading this, it's either my hangover or your grammer.

 

[trev]

I'm having difficulty in reading this, it's either my hangover or your grammer.

NEE NAR NEE NAR Grammar Police! Nobody move until this is corrected!
The Grammar Police have not charged you on this occasion. However, this should be taken as an official caution and will remain on your record

 

[thekingiam]

Will tell you results later like your idea Murdoch but don't think any 2gang switches that's why was thinking extractor, all working fine last year when I done eicr.
I know posting without test results is a bit silly but if I had done tests there would be no point in posting as I would have known the problem and resolved it, just wanted a general feel of what you all thought.