RCBO tripping

[Matt-T68]

Morning all

Completed the 240v in the van. Now it's doing my head in. RCBO fitted. Plug in and all tests fine. 240 at sockets. As soon as I plug anything in it trips. Tested all wiring. No shorts whatsoever. I'm wondering if it's the connection blocks I've used. I have used them before with no issues. Any ideas

 

[Dellmassive]

Is the live and neutral, blue and brown not wired up the wrong way round on that socket?

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Also how is the other one wired inside that black housing.?

 

[Dellmassive]

Maybe post a few pics of the CU as well.

The Rcbo will trip if there is an imbalance of power in live/neutral. Or a over current event.

 

[Matt-T68]

Morning DM

No mate. 1st thing I checked.

 

[Dellmassive]

Got a side and front pic of that socket?

 

[Matt-T68]

Maybe post a few pics of the CU as well.

The Rcbo will trip if there is an imbalance of power in live/neutral. Or a over current event.

Used the connectors for Neutral and Earth. Would this cause the imbalance? Is there a better option bearing in mind the cramped box?

 

[Matt-T68]

Got a side and front pic of that socket?

Proper c-line sockets

 

[Dellmassive]

View attachment 224050
Used the connectors for Neutral and Earth. Would this cause the imbalance? Is there a better option bearing in mind the cramped box?

The PE earth needs to be separated from the neutrals.

You need L & N to go IN and OUT the RCBO.

The PE earth stays separate.

So the van chassis is eartherd to PE when connected to the external EHU.

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[Dellmassive]

@Pauly may be able to varify the Rcbo connection.

 

[Matt-T68]

So effectively I have to wire a Neutral and and Earth from the incoming EHU cable to the Neutral Out terminal on the RCBO?

 

[Dellmassive]

No the PE earth stays separate

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EHU N to rcbo N IN....then rcbo N out to sockets.

EHU L to rcbo L IN....then rcbo L out to sockets.

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EHU E to E van busbar, E bond with chassis and E to sockets.
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[Matt-T68]

Sorted. I'd run all Neutrals to busbar rather than running the circuit through the RCBO. All appears to be working.

Cheers DM

 

[Ralpher]

Hi Matt, make sure you get the system tested, pushing the button on an RCD/RCBO/RRRC etc only introduces a simulated fault and isn't a proper test. You will need something like a Megger MFT (Multi Function Tester) in order to test them.
Any decent electrician will have one and should understand how to run a test correctly. (it's a five-minute job but it's a good idea to have it tested).

Hope this helps a little.