17th edition board.

[La Poste]

I am looking at buying a 17th edition board with 100A DP isolator and two RCD's both at 80A.
I am wondering if it is common for these RCD's to be double pole IE they switch both live and neutral or if I want this facility do I have to buy a special board?
I understand that if I want double pole RCBO's I must specify this as the everyday standard seems to be single pole but as far as a bog standard 17th edition board goes I do not know the normal everyday Joe standard.
Will I have to specify I want double pole RCD board or will the board come with them as standard?
Thanks.

 

[vambo]

i thought all consumer unit rcd's are double pole? anyone?

 

[Guest123]

All RCD's you'll get in modern CU's will be double pole.

 

[jeremy]

Comes as standard I believe.

 

[Spudnik]

RCD's yes but most RCBOs are not.

But why do you NEED it to be DP?

 

[La Poste]

RCD's yes but most RCBOs are not.

But why do you NEED it to be DP?

Because I may fit a 100ma Rcd at the incomer although I have not yet decided.
It's a TT system.
I don't want a neutral fault in one of the downstream circuits to trip this 100ma RCD.
I've been reading a bit about it tonight it just seems the sensible thing to do.
http://www.------.org/forums/forum/...5&threadid=8186&highlight_key=y&keyword1=RCBO
P.S. I don't pretend to know a lot of what the original poster in the above thread is going on about, it's just the RCBO side of things that caught my eye.
I was mainly concerned with RCBO's but then I thought I would ask about RCD's too.

 

[sparkylad]

I you have all the circuits already protected by 30ma RCDs then whats the reason for the proposed 100ma rcd at the incomer---will the new consumer unit be metal or insulated construction. if you fitted an upstream rcd in the tails before a metal consumer unit,it would have to be time delayed in order to provide earth fault discrimination---are you proposing to install it yourself ?


sparkylad.

 

[La Poste]

I'm not planning on installing a 100ma RCD because the board is insulated and has two 30ma RCD's on it and the metre tails are in good order.
It was kind of a technical question really.
I just like the idea of RCD's being double pole. Switching off both Phase and Neutral.
I mean by reading and discussng things tonight I have learnt that two pole RCBO's are far superior to one pole.
The way I was taught to wire by my old skool boss is allways to look to the future and the possibilties that may arise.