Strange RCD tripping problem

[The Ghost]

I suppose like distance diagnosis/prognosis of electricals/bodies there needs to be schematics and info nothing like being on site. I don't suppose the electrician would care to join us and give further info like his tests or bonding situation etc. etc.???

 

[Mjbarnard]

Thanks. The downstairs ring mains which supplies the dishwasher is also on the same RCD. I asked the electrician if the air con neutral was correct and he came and rechecked - and said it was.

 

[telectrix]

so. that does lend itself towards accumulative leakage, as i said before.

 

[ruston]

I suppose like distance diagnosis/prognosis of electricals/bodies there needs to be schematics and info nothing like being on site. I don't suppose the electrician would care to join us and give further info like his tests or bonding situation etc. etc.???

You are correct, but I think @Pete999 is on the case.

 

[ruston]

so. that does lend itself towards accumulative leakage, as i said before.

If he is correct that is. His track form is not great.

 

[telectrix]

If he is correct that is. His track form is not great.

please expand on that.

 

[Wilko]

In my humble opinion, if the AC guys had fitted rcbo for their new circuits this problem perhaps would not have occurred or would be obviously AC related. Agree with Various about leakage and possible mixed Ns.

 

[ruston]

@Telectix .
If the electrician is correct that they are in the correct respective breakers and neutral bars.

 

[telectrix]

@Telectix .
If the electrician is correct that they are in the correct respective breakers and neutral bars.

i see .

 

[DPG]

Tel, I think Ruston was meaning that it is difficult to give a good diagnosis if basing it on the findings of the OP's spark, who's track record hasn't been 100% so far. Don't think he was aiming it at you.