Cable for cooker

[jezza]

We are thinking of having a electric ranger, rated at 13.8KW. The cable we have installed is a 10mm twin and earth, cable run of around 10m, run under the floor with no insulation.I just want to clarify that the cable is big enough. From my understanding a diversty rulke applies in that the first 10amps are taken into account then the remaining 30% of the remaining load, therefore 10 +(50x30%) = 15 = 25AMPS plus 5amps for the socket = 30Amps, therefore can i put it on a 32rcbo.

Can anyone please tell me if this is correct, or any further advice

Thanks

 

[nickblake]

looks good to me you could go to 40 amps on the MCB what does the manufacturer say it should be protected by thats the real question install what the say to install

 

[mattmoo1974]

watts/volts=Amps
13800/230=60 Amps
But the rating is it all on full tilt(I think)
Diversity will drop this down tho.

 

[nickblake]

your spot on mate calc are correct , to do it you work out your total current rating then the first 10 amps 30% of the remaining them 5 amps for the socket
so its 60 amps

50 x 30% = 15 amps
plus first 10 amps = 25 amps
plus the socket = 5

total 30 amps so theoretically your 32 amp would be acceptable

sorry about first post mind was else where

 

[mattmoo1974]

Iv learnt somat anyways

 

[nickblake]

thats why i put it down like i did , jezza was correct just high lighted it a tad , we are all still learning , write that one down matt:6:lol sorry could resist that smily

 

[mattmoo1974]

Where did you get the diversity figure from?
A page number in OSG or BRB i can get my highlighter out

 

[telectrix]

Where did you get the diversity figure from?
A page number in OSG or BRB i can get my highlighter out

copy nick's post, paste , print, stick i spare page of osg, ssimpple

 

[mattmoo1974]

The pen is much easyer tel
Plus im far to tight to print this page,Look at all the colour

 

[nickblake]

its in the OSG page 97 appendix 1 table 1B very intresting table for cable calcs, loads etc

 

[nickblake]

get a lazer jet not changed a cartridge this year yet

 

[mattmoo1974]

I agree Nice 1 Nick

 

[electromonkey]

its in the OSG page 97 appendix 1 table 1B very intresting table for cable calcs, loads etc

If that's what you call interesting Nickblake I'd hate to see what you'd call boring! LOL