Do I need a new CU?

[JohnW2]

IIRC, they can't be adjusted - but it's quite a long time since I handled one, so I may be wrong.

Correct - they cannot be adjusted. ... If the supplied configuration isn't what you want, buying a whole new busbar assembly is the only option, assuming the configuration you want is actually available.

Thanks for confirming.

Kind Regards, John

 

[richardrich79]

.
BTW - what is the B40 being used for - the cooker?

Firstly thanks to everyone, the B40 is a 6mm connection to the present electric shower which is going and the cable will then be used for the cooker.
The 10mm cable is being used as I always tend to 'over-engineer' (the shower we're probably getting is 8.5kw )
When I say its in conduit its not fully enclosed just lying in the slot, it's the rectangular plastic type where you put the 'top' on.
Thanks for the ref' to the Building reg 4, we've already sorted that as it's part of a larger project.
Needless to say I'll ask the local guy to do it for me once we've got an actual shower to fit and give him a very generous 'drink' for his trouble

 

[EFLImpudence]

The regulations are already overengineered.

What you have already is perfectly adequate for an 8.5kW shower.

 

[securespark]

^^^^^^^^Wot 'e said.