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.

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