UK Sub mains for garage help?

[S12tradey]

So looking for some help, currently I have a sub mains board in the garage supplied from the house CU on a B16 mcb. Right now the sub mains in the garage has a 63amp main switch with 32amp radial circuit and a 10 amp lighting circuit although as there is going to be a shower added in to here which will be pulling 39amps what is my best option, as I won’t be able to add a 45amp breaker for the shower to this sub mains?

 

[loz2754]

Important question - what size cable is it from the house to the garage? This will be your determining factor.

 

[ipf]

...and an adequate earth bond will be required for the water supply.

Plenty factors involved. Get some qualified help on site.

 

[S12tradey]

it looks like it’s only 2 2.5 t+e ?

 

[loz2754]

it looks like it’s only 2 2.5 t+e ?

? You've answered your own question then.