Or 100 A for 10 m, or 10 A for 100 m, or 1 A for 1 km. Those wires would have obviously different shape but use the same volume of material. (I haven't checked wire lately, but the price mentioned for copper seems a little high)
--- On Tue, 4/7/09, Pierre Abbat <[email protected]> wrote: From: Pierre Abbat <[email protected]> Subject: [USMA:44464] Re: Strange SI units To: "U.S. Metric Association" <[email protected]> Date: Tuesday, April 7, 2009, 4:34 PM On Tuesday 07 April 2009 15:46:09 [email protected] wrote: > Just came across this article: > > http://ptonline.aip.org/journals/doc/PHTOAD-ft/vol_62/iss_4/25_1.shtml > > but was flummoxed by this part: > > $30/kA·m > > What the heck is kA·m and why do they use it? I guess from the context that 1 kA·m is a wire 1 m long that can safely, or without too much loss, carry 1 kA. Pierre
