Tripping RCD on new Ring Main

[Electron]

I have installed a new ring main in a kitchen extension and tested for continuity and insulation resistance before connecting to Consumer Unit. As soon as main switch turned on, even with all the MCB's switched off, the RCD tripped. I removed all the connections to the consumer unit from the new ring and the rest of the circuits were fine. So problem is with the new ring main but I can't think what the problem is. Has anyone any advice?

 

[Pete999]

I have installed a new ring main in a kitchen extension and tested for continuity and insulation resistance before connecting to Consumer Unit. As soon as main switch turned on, even with all the MCB's switched off, the RCD tripped. I removed all the connections to the consumer unit from the new ring and the rest of the circuits were fine. So problem is with the new ring main but I can't think what the problem is. Has anyone any advice?

Anything plugged in or connected via a fused spur?

 

[westward10]

Did you check polarity as one of your dead tests.

 

[Pete999]

I have installed a new ring main in a kitchen extension and tested for continuity and insulation resistance before connecting to Consumer Unit. As soon as main switch turned on, even with all the MCB's switched off, the RCD tripped. I removed all the connections to the consumer unit from the new ring and the rest of the circuits were fine. So problem is with the new ring main but I can't think what the problem is. Has anyone any advice?

Ring Final Circuit Simon not a ring main

 

[Octopus]

What do you plan to do next?

Tell us and we'll give you some pointers......

 

[westward10]

I am thinking cpcs and neutrals incorrect terminals at an accessory.

 

[The Ghost]

Maybe mixed up neutrals? On dual RCD possibly? Did you do R1 R2 that maybe would throw up a fault. Just stabs in the dark there.

 

[buzzlightyear]

What do you plan to do next?

Tell us and we'll give you some pointers..

yeah what, show him how put a ring in and test.

 

[buzzlightyear]

possible he has put the neutrals on wrong side of the board non rcd side.

 

[Dannyg8810]

Maybe damage to cable from installation?

 

[telectrix]

on my patch.can come and sort for a reasonable fee.

 

[buzzlightyear]

now, I bet he's biting his lips now tele. that you are luring like a shark in that area.

 

[KEV 1 N]

I'll tell you what.....you have to be thick skinned to come on here asking for advice!

 

[buzzlightyear]

I'll tell you what.....you have to be thick skinned to come on here asking for advice!

yeah, like a rhino.

 

[Octopus]

yeah, like a rhino.

And be a rhino that answers questions too. ....

 

[buzzlightyear]

delete

 

[buzzlightyear]

delete

 

[PEG]

I would say if the cables are giving the correct resistance readings,both as individuals,and in relation to each other,then what is left,is them being connected,in the wrong order...

Like Eric Morecambe...but with a MFT

 

[Midwest]

As its morning now, and there's no drunken debauchee going on, did you do all the dead tests in order Simon, like the teetotallers suggested?

 

[Taylortwocities]

possible he has put the neutrals on wrong side of the board non rcd side.

That's my bet too.