RCD TRIPPING after hoover gets plugged in

[Yanni]

This is the full EICR, I also attach the first results of the EICR that failed, plus the recommendations that were actually carried out.

 

[endecotp]

Quote from the PDF:

‘Insulation resistance testing not carried out due to being unable to disconnect sensitive loads”

 

[blup]

Check the vacuum, although that seems unlikely as it works in the kitchen. Use a plug in socket tester, they don't show everything, but cheaper than getting in a sparky initially. Check the outside socket, you are responsible for that even if the tenants put it in.

 

[Ragnar_AT]

The fact that the hoover works in the kitchen but trips the RCD (and only one RCD) when plugged into a socket on the downstairs radial very much suggests that a circuit on this RCD has a neutral-earth fault.
If the neutral of that circuit was connected to the wrong bar I'm convinced both RCDs would trip on any load exceeding the trip current, i.e. between 20 and 30 mA. If the downstairs radial had no RCD protection at all, the hoover would work fine on that circuit. I suspect the garden socket to be honest.
You can try plugging the kettle into the downstairs radial. If that trips the RCD too, it's almost certainly a N-E fault.

 

[Yanni]

UPDATE:

I've got the feeling the wires were not connected properly after the EICR.

I made a video of the fault.
The two RCDs work fine on their own but they seem to trip when both are on without anything plugged in.

The external socket seems dry.
Also On the left RCD that does the downstairs sockets and the Cooker, the cooker works fine but I get nothing on the plugs downstairs, so virtually they are dead!

 

[endecotp]

Did you pay the electrician?

 

[Jurassicspark]

Wrong neutral bar.

It could be a N-E fault but you mention there isn't a load present in the installation so it's probably not.

Once encountered a fault on a shower The shower was connected from the first rcd. As soon as a load (toaster) was switched on on RCD2, the first rcd tripped. It's to do with the neutral current finding it's way through parallel paths such as bonding through the tripping RCD.

 

[Yanni]

Did you pay the electrician?

Yes but he is coming on Saturday to check.

 

[pete01]

Wrong neutral bar.

It could be a N-E fault but you mention there isn't a load present in the installation so it's probably not.

Once encountered a fault on a shower The shower was connected from the first rcd. As soon as a load (toaster) was switched on on RCD2, the first rcd tripped. It's to do with the neutral current finding it's way through parallel paths such as bonding through the tripping RCD.

I'll eat my hat if it isn't wrong neutral bar...

 

[Jurassicspark]

I'll eat my hat if it isn't wrong neutral bar...

Not without eating the cheese and onion sandwich from Tesco first.

 

[pete01]

Not without eating the cheese and onion sandwich from Tesco first.

It's on my to do list

 

[endecotp]

It bothers me that your EICR is describing the condition of the installation before the work was done, when you know it had been working correctly for some time. What you actually need is a report showing that the installation has been tested and shown to be OK after the works. If he had done that, he would have discovered his mistake.

Don’t give him any more work. And don’t pay for work until you know it is OK.

 

[Yanni]

THE BIG REVEAL!

The electrician came back today and he said he put one of the neutrals in the wrong RCD bars! 1 minute fix. All good.

 

[endecotp]

Pete’s hat is safe!

 

[Yanni]

Pete’s hat is safe!

Hahaha!!!