Correct wiring of RCCB?

[HappyHippyDad]

Hello all..

I figure its better to ask and be ridiculed than not!

I am about to add a couple of spurs to a ring that is not RCD protected. The neighbour definitely wants them channeled in rather than surface trunking so I have to RCD protect. It is an old Tenby CU with crabtree SB6000 MCB's. I have found a 32A RCCB which fits this board (see below)



The modern RCBO's are self explanatory with there flying neutral and (sometimes) earth and I am 99.9% certain this is right (diagram below) but I just wanted some reassurance that I take a single 2.5mm[SUP]2 [/SUP]conductor to neutral bar from N Supply, as the RCCB looks different to any of the modern ones.


Thanks..

 

[not clever]

correct apart from the neutral link needs to be greater than 2.5mm?

 

[HappyHippyDad]

correct apart from the neutral link needs to be greater than 2.5mm?

Could you explain a little more please? The ring is on a 2.5mm, why would the supply neutral need to be bigger for the RCCB if its just dealing with that one circuit?

 

[Silly Sausage]

Think, think! It's an RFC.
If it were an MCB, how many 2.5s would be connected to it?

 

[snowhead]

And the current rating of 2.5 is??

 

[HappyHippyDad]

Think, think! It's an RFC.
If it were an MCB, how many 2.5s would be connected to it?

****!

And the current rating of 2.5 is??

****!

After due consideration I shall be using 6mm:blush5:

 

[not clever]

4mm would do, but well done you got there in the end.

 

[Geordie Spark]

****!

****!

After due consideration I shall be using 6mm:blush5:

Good lad ... Yer larnin' !!!:hurray::wink_smile: