Sockets tripping after board upgrade - should have been rewired

[Samamer]

After updating a consumer unit, from an old rewireable fuse board, one of the socket circuits is tripping when under load. The property should have been rewired as the installation is so dated but the project manager and client didn't want to rewire it. The supply to the flat is approximately 10mm live and neutral tails and earth supplied through the conduit, an approximate length of 20m. Each circuit is wired in singles using steel conduit as the earth.

When the circuit is taken off of the RCD it no longer trips. I cannot find the fault and unsure what can be done to resolve this issue. I've never had to do it but I believe a circuit can be omitted from the RCD if a Risk assessment is produced but unsure if there is a possibility of this.

 

[Dustydazzler]

In my experience rcd isn’t that tricky to identify the issue once you have unplugged everything and drop all the accessories off. Normally something will become obvious.

I personally would not omit rcd protection because I can’t find the offending item

 

[Dustydazzler]

What are the insulation resistance test results for the circuit?

what is this witch craft thou speak of

 

[telectrix]

it's voodoo.how elsecan you get 1000v from 8 AA batteries?

 

[Vortigern]

L.op.T could give more than a 1000v out of batteries.

 

[Strima]

So at a guess no testing was done?

 

[buzzlightyear]

I should imagine he is hiding under his quilt after reading that avalanche. Don't blame him either. Scary.

I bet he's put some fingers in is ears, I bet is head in bits

 

[JBW175]

So at a guess no testing was done?

Just the bang test by the sounds of things.

 

[Dustydazzler]

I wonder if the OP found the problem

 

[JBW175]

It’s got to be a wind up. I’m not having it that a qualified spark is on here asking if he can omit RCD protection because the RCD trips and he can’t find a fault.

 

[DPG]

It’s got to be a wind up. I’m not having it that a qualified spark is on here asking if he can omit RCD protection because the RCD trips and he can’t find a fault.

If it was a wind up then I think he'd have been back on here trying to keep it going.

Sadly I suspect this is real.

 

[Moley]

Sadly I suspect this is real.

And I really don't think we shall see him again.

 

[Dave OCD]

yep. more info needed. e.g. have IR testes been carried out prior to energising?

Sounds bloody painful to me.?

 

[freddo]

And I really don't think we shall see him again.

I really want to know the outcome though!

 

[Moley]

Sounds bloody painful to me.?

Looks like Tel is talking bo**ocks again.

 

[Moley]

I really want to know the outcome though!

Probably can't type after having his hands bandaged up after the big flash and bang