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Anonymous Poster

calculation incoming main CB

04/01/2009 2:58 AM

dear sir

our load 2400A , how i can calculation rating incoming main CB

thanks & best regards

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Power-User

Join Date: Sep 2008
Location: Jakarta, Indonesia
Posts: 104
#1

Re: calculation incoming main CB

04/01/2009 8:13 AM

1. if that is actual load, multiply with 1.25, then look in catalog, how size CB is.

choose CB 3000 A.if doesn't found ,choose a little bit higher than

3000A.

2. if that is bus bar capacity, choose CB 2400 A.if doesn't found ,choose a

little bit higher than 2400A.

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Guru
United States - Member - New Member

Join Date: Jun 2008
Location: Alabama
Posts: 1604
Good Answers: 63
#2

Re: calculation incoming main CB

04/01/2009 11:43 AM

When you say "our load is 2400 amps", is that measured 2400 amps or is it calculated 2400 amps?

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