What watt electric shower

[lucio]

I want to replace an electric shower.The one that was here when we moved in does not work. I dont know what wattage it is. How do i know what wattage to buy? I dont want to buy the wrong thing.

 

[dean023]

see what size cable feeds your shower - if 6mm then no more than 7-7.5KW at a push or if 10mm you can go higher if you want

 

[Steve]

and check the circuit breaker / fuse / RCBO / MCB at the fuse box / consumer unit

the old shower might have a label on the bottom saying its power in kw.

 

[lucio]

I found out that the old one is a 9.5 kw and the cable looks like a 10mm we also have a seperate fuse box thing for the shower. would like to get the mira 10.8kw shower, hope that will be ok.

 

[ban-all-sheds]

10.8kW will be fine on 10mm. What's the rating of the MCB in the shower CU?

 

[lucio]

the consumer unit says Rated current-with swith dissconnector 50A with RCD 63 A

 

[Qedelec]

10500/230 = ??

 

[lucio]

on the shower switch on the cu reads 240/400v.

 

[Adam_151]

A photo might be usful of the shower CU

 

[Qedelec]

on the shower switch on the cu reads 240/400v.

That's just the voltage rating of the switch.
Do the math and compare with the breaker supplying the cicuit.
10500 divided by 230 equals ???Amps