MCCB Rating and Cable Size?

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Anonymous Poster #1	MCCB Rating and Cable Size? 09/01/2013 10:54 AM
	How we calculate the MCCB rating and cable size? Lets suppose if we have 68 kw load then how can we calculate the MCCB (Breaker) rating and Cable Rating?
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lyn Guru Join Date: Oct 2008 Posts: 42355 Good Answers: 1693	#1 Re: To search the formula that how we calculate the MCCB rating and cable size? 09/01/2013 11:14 AM
	Look it up in a table that you can find by searching.
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TonyS Guru Join Date: Aug 2010 Location: Resting under the Major Oak Posts: 4347 Good Answers: 181	#2 Re: MCCB Rating and Cable Size? 09/01/2013 11:59 AM
	Let's suppose you gave the rest of the data required. I would still tell you to check you're local codes for the relevant tables, I only have access to BS7671. I would also add, don't be so idle and do your own homework. __________________ The reports of my death are greatly exaggerated.
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jack of all trades Guru Join Date: Sep 2006 Location: Auckland, New Zealand Posts: 8777 Good Answers: 376	#3 Re: MCCB Rating and Cable Size? 09/01/2013 3:55 PM
	See previous threads on CR4 as we have answered this commonly-asked type of question before. __________________ jack of all trades
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PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on. Posts: 32175 Good Answers: 839	#4 Re: MCCB Rating and Cable Size? 09/02/2013 4:36 AM
	Cable- and breaker-sizing are possibly the most commonly-asked questions in CR4's Electrical Engineering section, as a few words in the Search this Forum box on the rhs of this screen will reveal. British Standard 7671 is the most common answer, as well as the most tiresome one. It is distressing to follow the number of posts that request cable sizing assistance. The seeming unwillingness to do the most basic search to establish local standards information beforehand suggests that there are a lot of electrical installations across the globe that are not installed to standard, by individuals who don't know what they are doing, and with attendant risks to lives and property that really shouldn't be there. <unsubscribes> __________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
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jack of all trades (1); lyn (1); PWSlack (1); TonyS (1)

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