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Wire Sizes Help !!! Which Gauge to use ???

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rjquillin

Joined: 13 May 2007
Posts: 123
Location: KSEE

Posted: Fri May 15, 2009 3:49 pm Post subject: Wire Sizes Help !!! Which Gauge to use ???

At 15:12 5/15/2009, you wrote:

  	  Quote: 	
		  I am wiring an airplane and need to know what gauge to use for a 10 amp circuit running about 10 feet of wire ?



 Also, what size wire should I use for the Molex Connectors I find on my Radio and Transponder ?



 Thanks,



 Mike 	


 AC 43.13 is your friend, specifically chapter 11.  If you don't want to purchase a copy, go here:

 http://rgl.faa.gov/

 click on AC in the upper right then enter 43.13 in the resulting search window.  First two hits.



 Minimum wire gauge for a 10A breaker or fuse is AWG-18.  Beyond that you'll need to determine maximum acceptable voltage drop, calculate what the voltage drop for your chosen wire gauge is and then derate for bundle size, total capacity and altitude to ensure your chosen size is acceptable.



 At least that's what those of us in certified land need to do...



 Ron Q.    [quote][b]

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