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Rooney Associate Join Date: Jun 2009 Posts: 49	Bus Bar Amperage 06/16/2009 5:07 AM
	Hello Everybody! Is there any chart or a website which could tell us the safe amperage (Amps) a bus bar (Aluminium) can carry with respect to its size & number? Any help will be highly appreciated. Regards, Rooney
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Anonymous Poster	#1 Re: Question2 06/16/2009 7:57 AM
	No, there isn't.
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wareagle Guru Join Date: Jun 2008 Location: Alabama Posts: 1604 Good Answers: 63	#2 Re: Question2 06/16/2009 9:58 AM
	Google "Copper bus bar rating"
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Mikerho Guru Join Date: Jan 2007 Location: Moses Lake, WA, USA, Thulcandra - The Silent Planet (C.S. Lewis) Posts: 4216 Good Answers: 194	#3 Re: Question2 06/16/2009 4:23 PM
	http://www.electricianmath.com/neccalculations/busbarampacity.htm Took me about 10 seconds. You could have done the same thing and not even had to wait for an answer. __________________ "Reason is not automatic. Those who deny it cannot be conquered by it. Do not count on them. Leave them alone." - Ayn Rand
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msamad Guru Join Date: Feb 2009 Location: Houston, USA Posts: 946 Good Answers: 244	#4 In reply to #3 Re: Question2 06/16/2009 5:59 PM
	Regarding this, the NEC Article 366.23(A) states: "---- The current carried continuously in bare copper bars in sheet metal auxiliary gutters shall not exceed 1.55 amperes/mm² (1000 amperes/in.²) of cross section of the conductor. For aluminum bars, the current carried continuously shall not exceed 1.09 amperes/mm² (700 amperes/in.²) of cross section of the conductor." Please also see my previous answer to another thread: http://cr4.globalspec.com/comment/384680 -MS __________________ "All my technical advices in this forum must be consulted with and approved by a local registered professional engineer before implementation" - Mohammed Samad (Linkedin Profile: http://www.linkedin.com/in/msamad)
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Mikerho Guru Join Date: Jan 2007 Location: Moses Lake, WA, USA, Thulcandra - The Silent Planet (C.S. Lewis) Posts: 4216 Good Answers: 194	#5 In reply to #4 Re: Question2 06/16/2009 9:56 PM
	Hi msamad, Great! My main point however, was to let the OP know that the information is but a CR4 search (in your case) or a Google search away - much quicker than waiting for an answer to a post on CR4! Cheers! Mike __________________ "Reason is not automatic. Those who deny it cannot be conquered by it. Do not count on them. Leave them alone." - Ayn Rand
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Rooney Associate Join Date: Jun 2009 Posts: 49	#6 Re: Bus Bar Amperage 08/12/2009 12:28 AM
	Thank you Gentlemen !!
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Users who posted comments:

Anonymous Poster (1); Mikerho (2); msamad (1); Rooney (1); wareagle (1)

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