10.8Kw Shower

[cjd]

Hello

I have installed 10mm t & e for a 10.8kW shower from the consumer unit to the switch. The cable, which is currently 6mm, from the switch to the shower is a run of 3m in an uninsulated loft and down an uninsulated partition wall. This cable is very reluctant to be withdrawn. Dwangs and whatever ?. The partition wall is tiled on both sides making jumping the dwangs problematic.

Would it be possible to use the 6mm that is currently installed or is breaking of tiles the only option ? I do have the option of using a long auger bit but it may not be long enough.

Cheers

cjd

 

[steptoe]

Get a longer bit, or spade bit and extension/s

 

[cjd]

roger

 

[Andy™]

Would it be possible to use the 6mm that is currently installed or is breaking of tiles the only option ? I do have the option of using a long auger bit but it may not be long enough.

Cheers

cjd

depends what your circuit design & cable calcs say

worst case you could always use trunking

 

[OnOff]

I would recommend a multi-tool for neat removal of tiles. The things are a God send! Cut thru the grout between the tiles / scrape the old grout off with it and re-use the tile to boot!

 

[cjd]

thanks for all the advice guys 10mm and a boring tool it is

 

[SPECIAL LOCATION]

Remember..

Kw rating of showers for most manufactures is at 240v nominal... 

(theres normally a smaller print lower rating for 230v)

10800w / 240v =45A

which is just a gnats whisker inside the 47amp clipped direct 6.0mm capacity given in table F6 page 150 OSG.. 

(method C clipped direct also includes in masonry (plaster wall) method 57 page 320 big green...)

But...

I wouldn't be very happy with the termination part of the 6.0mm at the switch ..

and I would bet the switch termination joint would overheat before the cable buried in the wall became dangerous.. 

and it would still be a pain in the butt to rectify later..

So as sugested..

pull the old out..  stick in 10.0mm all the way!

jobs a goodun!

Guinness

 

[NozSpark]

....and thats assuming you protect it with a 45A MCB

 

[sprocketflup]

thanks for all the advice guys 10mm and a boring tool it is

there are a few boring tools on the TEF members list (Like Mr Smith)

 

[sparkytim]

....and thats assuming you protect it with a 45A MCB

50 Amp will do as its a fixed load.

 

[sprocketflup]

Oh Dear, Oh Dear :slap

twat

 

[Mr Smith]

mr flop

mr smith is unhappy

with the inference you make

mr flop is

for the moment

kindly requested

to avoid such comments

not to mention the offensive language

mr smith does not like to castigate

but

mr flop appears to be on a rather slippery footing

mr smith will be watching

thank you

mr smith