On 12/07/18 12:49, Scott wrote:
On Thu, 12 Jul 2018 11:37:05 +0100, The Natural Philosopher
wrote:

Am I right in thinking that no matter how dysfunctional or prone to
nuisance tripping it is, a 30mA whole house RCD still meets current
regulations?

And in a 16 year old property that is to be let, does it NEED to meet
current regulations anyway?

As a digression, I believe the rules have now changed so a consumer
unit must be of metal construction. I assume this too is not
retrospective.

Not quite:

Must be non combustible or contained in a non combustible enclosure.

(Not sure of the exact wording but basically that ^^)

However, that has been implemented as "metal" for the most part.



It is not retrospective.



1. Is it a good idea or - as one person told me - totally pointless?

It would be more to the point to improve standards for the MCB/device
construction to avoid overheating in the first place. Proper screw
terminals rather than cage clamps and double screws on larger current
devices. No dissimilar metals - say all brass terminals and screws.

2. Would it be necessary to replace the entire unit or could one buy
box only and transfer the contents (Crabtree)? (Reason, I have
RCBOs.)


Not required.