upgrading 8.5 kw shower to 9.5 kw

[danone487]

I have to replace broken shower,we currently have an 8.5 kw shower,this is installed with 10mm cable and isolating switch outside bathroom.Will it be ok to wire new shower to this?

 

[andy]

I have to replace broken shower,we currently have an 8.5 kw shower,this is installed with 10mm cable and isolating switch outside bathroom.Will it be ok to wire new shower to this?

wiring - yes

but whats the rating of the fuse/MCB? and is there an RCD protecting it?

 

[bigbadbob1981]

First you must check your earth bonding is ok
But apart from that all will be ok, But it must be 10mm and not 6mm.

 

[danone487]

the main fuse board is 100a the fuse supplying the shower has b32 on it,sorry for lack of detail

 

[andy]

the main fuse board is 100a the fuse supplying the shower has b32 on it,sorry for lack of detail

do you have RCD protecting?

also, 9.5KW is just over 40A. so youll have to upgrade the MCB

 

[danone487]

excuse my ignorance but how do i find the answer to these.The shower was wired by an electricain approx 2 yrs ago and the house is only 3.5 years old

 

[bigbadbob1981]

do you have a test button on the front of your cu..
or anything about 30mA

 

[danone487]

it has a test button and near this it has 80a 240v 30mA

 

[andy]

it has a test button and near this it has 80a 240v 30mA

then you have an RCD....

 

[danone487]

aww cool, so what do i have to do now? what does b32 on the mcb mean?if i have to upgrade this ,is it possible to do it myself and if so what size should i put in?

 

[andy]

aww cool, so what do i have to do now? what does b32 on the mcb mean?if i have to upgrade this ,is it possible to do it myself and if so what size should i put in?

B45

and if you dont know what the B32 means, then you should leave it for someone who does

 

[securespark]

It's probably 45A too, but just check the iso is up to the new current.