Diversity ?

[martinh89]

Hi can sombody please shed some light on this for me i cant get my head round the process ?

this is the equation i've been given

a 230v 12.5kw domestic cooker maximum demand current I=p/v =12500/230=54.35

i understand that bit but its this bit i dont get

applying diversitiy

first 10a of full load current =10A =44.35
+30% of remaining = 44.35 x 30% =13.35
+5a for socket outlet = 5A
TOTAL = 28.3


Can some one please explain to me how you get 28.3 from the original 54.35 ??????????

 

[Guest55]

voodoo magic say some.
others realise that 99% of the time the cooker will only use half its rated current.
;-)

 

[chrish_1977]

Cause that's the way they say it will happen in the regs, trust and ye shall be enlightened

 

[martinh89]

i understan it alll up un till the +5a how do i go from 13.3a to 28.3 ????????????

 

[Guest55]

the first 10a >>>>>>>>>>>>> 10
30% of remainder ( 44.35 ) >>>> 13.35
Add 5a if socket >>>>>>>>>>> 5
---------
total 28.35

 

[Knobhead]

Diversity and cookers is simplicity it’s self.

When they’re all turned off, they won't be on.
When they’re all turned on occasionally all could be on or they could all be off.
When they’re all not turned off some may be off but some may be on.
When some are turned on, of the ones turned on some could be off. The ones turned off won’t be on.

Does that clear it up?

 

[martinh89]

i understand the 30%of the remainder is 13.3 , but what do i do to get 28.3 its not plus 5 because itll be 18.3. it is just this last bit im confused with

 

[Octopus]

i understand the 30%of the remainder is 13.3 , but what do i do to get 28.3 its not plus 5 because itll be 18.3. it is just this last bit im confused with

Don't forget the first 10A

 

[martinh89]

i might just be missing somthing really obvious but please could some one explain it step by step in a very simplified was as it appears im very simple today -_-

 

[Guest55]

i understand the 30%of the remainder is 13.3 , but what do i do to get 28.3 its not plus 5 because itll be 18.3. it is just this last bit im confused with

so you didnt bother reading post #5 then ?

 

[KAS1]

Post 5 has explained it.............

- - - Updated - - -

too slow again lol

 

[martinh89]

no sorry i think i follow
first 10a of full load current =10A =44.35
+30% of remaining = 44.35 x 30% =13.35
+5a for socket outlet = 5A
TOTAL = 28.3

from the first 10a i took off i then add on and then add 5 for the socket so it goes like 13.35 +10Aload =23.35+5a(socket) =28.35

 

[ifindoubtdont]

We all have blond moments every now and then.