Rcbo

[T&Earth]

Hi Guys

I know this sounds daft but could anyone tell me how to wire up a RCBO please, not 100% especially regarding functioning earth.

Many Thanks

Steve

 

[GrannySmiff]

Put your live and neutral in to the RCBO and then the neutral that is attached to the RCBO as a curl pig tail cut that to required size and attach to neutral bar as you would have the neutral that has now gone directly into the RCBO and then the functional earth into the earth bar along with your earth from the circuit.

I am not saying this in a position of full confidence but think its right and therefore would like to be corrected if wrong.

Cheers.

 

[rocker]

Yep that's right.

 

[T&Earth]

Hi Granny Smith

Thanks for taking the trouble to reply to my question & Rocker for seconding it

Many Thanks

Guys

Steve

 

[Golden_Boy]

Put your live and neutral in to the RCBO and then the neutral that is attached to the RCBO as a curl pig tail cut that to required size and attach to neutral bar as you would have the neutral that has now gone directly into the RCBO and then the functional earth into the earth bar along with your earth from the circuit.

I am not saying this in a position of full confidence but think its right and therefore would like to be corrected if wrong.

Cheers.

What about any existing residual current devices??
Surely the neutral and live must be supplied from a point just after the main switch?

 

[GrannySmiff]

What about any existing residual current devices??
Surely the neutral and live must be supplied from a point just after the main switch?

? not sure what you mean.

RCBO connects to busbar just like MCBs and the neutral and live from the circuit go into the RCBO.

The main switch only comes into is as that is making the busbar live which the RCBO will be connected to???.

But maybe I have misunderstood what you are asking.

 

[chris gray]

What about any existing residual current devices??
Surely the neutral and live must be supplied from a point just after the main switch?

no disrespect but that doesnt seem to make any sense?/

 

[AEC]

There was no mention of any other RCD's.

 

[Golden_Boy]

There was no mention of any other RCD's.

Good point !!

 

[GrannySmiff]

Even if there was it wouldn't make a difference.

 

[AEC]

Even if there was it wouldn't make a difference.

Oh yes it would.

Especially if the busbar where the rcbo was being connected was protected by one.

 

[cbw]

RCBO before the rcd protected circuits and on a different neutral/bus bar as in a high integrety board, causes all sorts of imbalance otherwise!

We are putting high integrety boards into the two houses you and I are doing at the moment......Have a good snout on Monday, Cambridge has 2 RCBOs, 1 for the fire alarms and 1 for the emergency lights, Bury has 1 rcbo for the smokes.

The one I am doing this weekend is an all RCBO board, and at the risk of sounding ---- it looks really smart!!!!

 

[GrannySmiff]

So what if you have a split load board and both sides protected by RCD the RCBO's will cause imbalance? hmmm.

Or you don't need to use an RCBO on a RCD protected CU as its already got that protection.

 

[cbw]

Why would you do it.....?

Which one would you want to trip first???

How could you guarantee this......

 

[Graeme Harrold]

You wouldnt put RCBO's onto an RCD protected circuit, not so much from imbalance, but from a discrimiation point of view.