Tripping issue with Split load Wylex DB

[ipd1961]

Got an issue at home, today I got home and found one of the RCD's had tripped on my split load Wylex DB.
I tried to reset but it wasn't having it. Switched all MCB's off on the RCD (Call it number 1) that had tripped then reset. All was ok, switched each MCB on and stayed in.
Put the kettle on (which is on the other RCD (call it number 2) and on the kitchen circuit) and it tripped RCD number 1, kettle carried on boiling without an issue to the RCD 2 or the MCB it is on.

House was rewired in 2016 and the new board installed then

HELP, I am at my wits end which is a very short journey

Any ideas will be greatly received. Give me 3 phase any day of the week

 

[buzzlightyear]

Council property

is it still ?

 

[ipd1961]

Have it to hand when a spark is investigating - changes in IR readings may be very eye opening..........

BUT have you unplugged everything ? Washing machines? Dish washers? Ovens ?

The cooker was totally disconnected, washing machine dishwasher and tumble drier are on the kitchen circuit on the RCD that's not tripping. Just confused why after 2 years it's going ---- up

 

[ipd1961]

Have it to hand when a spark is investigating - changes in IR readings may be very eye opening..........

BUT have you unplugged everything ? Washing machines? Dish washers? Ovens ?

The cooker was totally disconnected, washing machine dishwasher and tumble drier are on the kitchen circuit on the RCD that's not tripping. Just confused why after 2 years it's going ---- up

is it still ?

is it still ?

Yes, I am giving up for tonight and will take the day off tomorrow to try and sort it

 

[buzzlightyear]

Yes, I am giving up for tonight and will take the day off tomorrow to try and sort it

no you want ,get the council own sparks in .you have no liability for that step away now.

 

[Octopus]

The cooker was totally disconnected, washing machine dishwasher and tumble drier are on the kitchen circuit on the RCD that's not tripping. Just confused why after 2 years it's going ---- up


Yes, I am giving up for tonight and will take the day off tomorrow to try and sort it

Mice? water leak? trapped cable? DIY infliction?

Do you have any proper test kit?

 

[telectrix]

neutral earth fault, could be on either RCD.

 

[buzzlightyear]

neutral earth fault, could be on either RCD.

considering the op cant work it out poor person I love a tryer. plus a council tent .

 

[Octopus]

Council property and all we got was your cooker is causing the issue. The cooker has been completely disconnected from the outlet and still it trips

That doesn't rule out the cooker circuit, isolator or outlet plate

 

[telectrix]

considering the op cant work it out poor person I love a tryer. plus a council tent .

buzz, you can be so cruel at times.

 

[Toneyz]

The OP has 2391 so should be able to do an installation resistance test if he can at least narrow the faulty circuit down and disconnect even if he feels he shouldn't be investigating further.

 

[TJ Anderson]

In the morning.


Switch off Main Switch and remove cover. Switch all MCB's to off. Remove the RCD load neutral cables from the neutral bars but leave all the final circuits in.
Don't worry about unplugging stuff. Set IR tester to 250v and then do global IR's N-E, removing individual neutrals if a low reading obtained to pin point. If IR satisfactory, then test between the neutral bars to check separation of circuits over the two RCD's.

 

[Deleted member 9648]

I cant believe it took 21 posts before the blindingly obvious was stated.

 

[Octopus]

The OP has 2391 so should be able to do an installation resistance test if he can at least narrow the faulty circuit down and disconnect even if he feels he shouldn't be investigating further.

Do they have any test kit?

 

[TJ Anderson]

Assumed he would have being a supervisor with 2391. Would hope so anyway......

 

[TJ Anderson]

Assumed he would have being a supervisor with 2391. Would hope so anyway......

It's gonna be a somewhat longer process for him then if he hasn't......lol