16mm or 25mm from consumer unit to consumer unit.

I will have a think/look/think/look about that.
Better, and much lower risk, would be to ask the electrician who you eventually want to sign an EIC and tell Building Control that he did it all what you should do.
 
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Is there no other option for showers than electric?
No, there is only an electric supply.
Wouldn't it be more efficient to heat a tank of water with 3kw, or even 6 and run showers off that?
Tht certainly could be a solution to the potentially very high electrical load of multiple electrical showers operating simultaneously (and perhaps that's what you meant), but I really can't see how it could be more efficient than heating the water with a shower when required.

Kind Regards, John
 
Tht certainly could be a solution to the potentially very high electrical load of multiple electrical showers operating simultaneously (and perhaps that's what you meant), but I really can't see how it could be more efficient than heating the water with a shower when required.

It can't be more efficient, as there would be some storage losses, but it might be a lot cheaper if heated overnight on an off-peak tariff.
 
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Tht certainly could be a solution to the potentially very high electrical load of multiple electrical showers operating simultaneously (and perhaps that's what you meant), but I really can't see how it could be more efficient than heating the water with a shower when required.
It can't be more efficient, as there would be some storage losses, but it might be a lot cheaper if heated overnight on an off-peak tariff.
Exactly. That's precisely how I have my (cheap but not 'more efficient') showers! ... unless, of course, one were to have one's showers during off-peak times, in which case the electric shower would again win (this time in terms of both cost and efficiency). However, for the OP, reducing maximum loading on his installation is probably the main consideration, in which case anything wins over electric showers!

Kind Regards, John
 

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