Availability of RCD for older wylex distribution board

[MidAtlantian]

Hi,

I'd like to replace one of the breakers on an older Wylex board with an equivalent RCD. The current breakers are NB series "Type 2". If anyone knows IF I can find 20 or 25 amp RCDs that would fit and that are not wider than 2 standard breakers, and then of course, WHERE, that would be great.
Thanks,
MidAtlantian

 

[shagbite]

[h=3]Google[/h]www.google.co.uk/‎



there you go fella......knock yourself out.

 

[onions1066]

Do you mean rcbo or rcd?

 

[MidAtlantian]

Do you mean rcbo or rcd?

Sorry for the delay in responding. I just noticed your reply. Actually either RCBO or RCD would be OK. I've looked - including the web and Ebay. I can find the 63 and 100 amp RCDs - even if they take a lot of board space. But I have not seen 15 or 20 amps, and really I am not sure they were ever produced.

Cheers,
MidAtlantian

 

[telectrix]

what i9s the need for RCD. is it for a new circuit ? if so could you not come off MCB in the CU to a RCD in an enclosure, then connect circuit into the RCD.?

 

[Guitarist]

You said that you want to replace one of the breakers. What you need is an RCBO.
Are you an electrician?

 

[MidAtlantian]

Yes, thanks. Space is tight, but that might be the only way to go. But! Can I add an "external" RCD without having to upgrade the main CU, since the new specs are for 30ma RCD on all circuits, and the old board has 100ma. I know it is safe enough, but is there are work-around on the "rules" side? I mean, it would not exactly be something you could miss.

Cheers,

 

[Guitarist]

No, you cannot simply add an up-front RCD, as this will be in breach of the regs.

 

[DPG]

Are you assuming the 63A RCD will trip on overload >63 amps? Is this why you were looking for a 25A RCD? Daz

 

[GLENNSPARK]

Are you assuming the 63A RCD will trip on overload >63 amps? Is this why you were looking for a 25A RCD? Daz

and on & on & on it goes...lol...

 

[MidAtlantian]

DPG, Well, yes, I am assuming a 63A RCD would trip on 63A or an earth leak. That is for a zone of several "subordinate" breakers. For a single 2.5mm run to an external socket, I need a 20 amp breaker.

My question was about **availability** for an older Wylex CU. No one seems to have noticed that!

Cheers,

 

[MidAtlantian]

Thanks. Yes, it looks like a fused RCD spur was the answer. Its cuts the maximum power from 20 amps to 13, but that should be more than sufficient for this application.

 

[Guitarist]

Thanks. Yes, it looks like a fused RCD spur was the answer. Its cuts the maximum power from 20 amps to 13, but that should be more than sufficient for this application.

RCD's DO NOT trip on overload. The rating is purely the rated current which they can carry.

I'm always amazed at how many people do not know the basics of how their equipment works!

 

[GLENNSPARK]

RCD's DO NOT trip on overload. The rating is purely the rated current which they can carry.

I'm always amazed at how many people do not know the basics of how their equipment works!

its almost beyond words innit G......lol..
to the O/P:
get an electrician in to look at it....