Does this setup contravene any regs or is it ok?

[SparkyChick]

As have I but even from that reg, leaving spare ways in a CU is not a specific requirement.

No it's not and this comes up from time to time. My view is better to leave some spare... how many times have you been to a job wanting just one breaker and there is nothing

I know eventually the spares may be used, but that takes time.

OP has installed a massive 23 circuits CU and had 2 spare. But he decided wanted one more. It wasn’t necessary and if he’d had left it at two spares this thread wouldn’t even exist.

I think I would have contented myself with two.

No, it wouldn't, but as I've said it's interesting to see other peoples perspectives on the regulations even if you don't agree with them.

 

[markythesparky]

No it's not and this comes up from time to time. My view is better to leave some spare... how many times have you been to a job wanting just one breaker and there is nothing

I know eventually the spares may be used, but that takes time.



I think I would have contented myself with two.

No, it wouldn't, but as I've said it's interesting to see other peoples perspectives on the regulations even if you don't agree with them.

And that my friend is the first time we’ve agreed!

 

[Deleted member 26818]

I am surprised the OP went about creating the spare way in the manner that they did.
I would have added the Lobby lights to the rest of the ground floor.