I've got to install a CU for an old fusebox.Problem is, there's not enough space for a split load CU.As I've only got 7 circuits, is it alright for me to put a unit in with 1 RCD that protects all the circuits?
Do you have all of the dimensions for the cupboard?
If you could post up what space is available perhaps a kind member may know of something that will do just the job:thumbsup
"I" personally would never fit just one RCD covering an entire installation.
Two reasons automatically spring to mind 1) If there is a fault on a single one of the seven circuits the entire installation will be wiped out, you know only too well this is more than likely going to happen at night leaving the house in complete darkness which will put the client at risk of injury due to not being able to find their way in the dark.
Second reason that also springs to mind, a build up of earth leakage over the 7 circuits may cause nuisance tripping of the RCD device.
I would most definitely try to encourage your client to opt for RCBO's however, this can get expensive as I am sure you have already realised.
There are other ways of not requiring RCD protection but IF steel earthed conduit is not already in place or cables buried not less than 50mm in walls then this work will far outweigh that of providing RCBO protection.
PS, I've had a wonderful weekend away and not been on the forum to read any other threads or get wound up by the many trolls that visit the forum so out of the kindness of my chilled heart I have provided what I believe to be my most informative reply.
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Please post back and let us know the dimensions and keep us updated with your progress,
Good Luck and Welcome to the forum:thumbsup
