Amount of Current

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Anonymous Poster	Amount of Current 06/02/2010 2:05 AM
	How much current will 630 mm Sq cable be capable to draw? Regards, Basole
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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	#1 Re: basole@alphakenya.com 06/02/2010 2:33 AM
	→ British Standard 7671. __________________ "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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Tornado Guru Join Date: May 2009 Location: Richland, WA, USA Posts: 21017 Good Answers: 795	#2 Re: basole@alphakenya.com 06/02/2010 4:12 AM
	It depends on the ambient temperature, the type of insulation on it, the distance between it and adjacent conductors, and whether it is in open air, conduit, raceway, or buried in ground. BS 7671 in the U.K., the NEC in the U.S., and various local codes should have this information as it applies to your location. __________________ In vino veritas; in cervisia carmen; in aqua E. coli.
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Anonymous Poster	#3 In reply to #2 Re: basole@alphakenya.com 06/02/2010 7:02 AM
	and most important is type of conductor- copper or aluminum.
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JRaef Guru Join Date: Sep 2006 Location: California, USA, where the Godless live next door to God. Posts: 4665 Good Answers: 804	#4 Re: Amount of Current 06/02/2010 4:12 PM
	Trick question actually. The real answer is... ZERO! Conductors *CARRY* current, they do not "*draw" current! And to that end, conductors can "carry" any amount of current you try to allow them to. They cannot do it SAFELY beyond a certain limit, but the definition of "safely" varies by application and jurisdiction. In other words you can pump 100,000 amperes through a 1mm wire... for a fraction of a second. __________________ * All I every really wanted to be, was... A LUMBERJACK!.**
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Anonymous Poster (1); JRaef (1); PWSlack (1); Tornado (1)

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