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Anonymous Poster

# MCC Panel Current Carrying Capacity

12/06/2009 11:06 AM

dear all,

i need to calculate a current carrying capacity of incoming MCCB for a MCC panel

as per IEC standard

datails:

we have 10 branch circuits of each capacity 25kw

voltage:3ph,415v

can any one suggest me regarding this and IEC stardard code

rkram

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Guru

Join Date: Oct 2008
Posts: 42290
#1

### Re: calculation of current carrying capacity of a MCC panel

12/06/2009 11:35 AM

Why don't you get the specs and do it the right way, instead of asking strangers.

List of IEC standards - Wikipedia, the free encyclopedia

Anonymous Poster
#2

### Re: calculation of current carrying capacity of a MCC panel

12/07/2009 1:47 AM

Dear sir,

i designed the circuit as per the following formula

Incomer current rating = 250% of full load current of largest motor + Full load current of remaining motors

I want to know, is it okay as per IEC standards

rkram

Anonymous Poster
#3

### Re: calculation of current carrying capacity of a MCC panel

12/07/2009 7:04 PM

Your sub text "loosers and liars", you should check the spelling of loosers. If you look up the spelling in a Dictionary it is spelt "losers".

Unless of course you mean "someone who is not so tight"...

Guru

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Location: Richland, WA, USA
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#4

### Re: calculation of current carrying capacity of a MCC panel

12/08/2009 12:42 AM

"Liers" was also a misspelling. But then you misquoted it as "liars", which happens to be the correct spelling, thereby spoiling your opportunity for a twofer. Oh well, don't get me started on it's/its, there/their/they're, than/that, who/whom/whose/who's, and a host of other such confusions.

Sweetly yours,

Miss Fidditch

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#5

### Re: calculation of current carrying capacity of a MCC panel

12/08/2009 3:52 AM

refer IEC 61439 and if it is not clear then do come back to the thread