9.5 kw shower on 6mm ?

[jdd]

Surely the only 'proper' way of doing it is 6mm cable, 45A breaker, Ref method C throughout.

That way Ib is less than In.

?

 

[Guitarist]

if it ain't broke, don't fix it. perfectly OK with a ccc of 47A on a 40A MCB.

47A is the absolute max under continuous clipped direct conditions with no VD. I personally wouldn't put 6mm on a 40A MCB, nor run a 9.5KW load on it, but that's just my opinion.

As far as not being in the shower for more than 5 or 10 mins goes.... tell my daughter that.

 

[markthespark]

Ive seen a 9kw shower ran on a 32 amp MCB

 

[Guest55]

Surely the only 'proper' way of doing it is 6mm cable, 45A breaker, Ref method C throughout.

That way Ib is less than In.

?

Yes , but many CU brands dont have 45A mcbs , next one up is 50 which will need 10mm cable.

 

[SPARTYKUS]

or make sure it hangs in free air betwixt CU and shower.

CCC is 51A then.

sorry just injecting some levity.

 

[telectrix]

47A is the absolute max under continuous clipped direct conditions with no VD. I personally wouldn't put 6mm on a 40A MCB, nor run a 9.5KW load on it, but that's just my opinion.

As far as not being in the shower for more than 5 or 10 mins goes.... tell my daughter that.

can you get a 45A, 5 minute time switch?

 

[Guest55]

Ive seen a 9kw shower ran on a 32 amp MCB

And there you go lol.
Did anyone die , get electrocuted or house burn down firewalshy ?

 

[Guitarist]

I'm not too fussed, that's why I installed a 7.5 KW shower

 

[markthespark]

lol nope but i did she a shower not sure what the kw rating was ran off a 30 Amp BS3036 fuse in 1.5mm 3 core!!!

At first glance i thought it was 4mm, looked in the loft and it was all melted under the insulation.

Still worked though i found it as i was installing a loft light.

 

[telectrix]

lol nope but i did she a shower not sure what the kw rating was ran off a 30 Amp BS3036 fuse in 1.5mm 3 core!!!

At first glance i thought it was 4mm, looked in the loft and it was all melted under the insulation.

Still worked though i found it as i was installing a loft light.

well, if you insist on using your 6mm for the loft light, you'll have to use 1.5mm for the shower as you'll have no 6mm left.