On Sunday 27 October 2019 01:15:06 Chris Albertson wrote: > On Sat, Oct 26, 2019 at 6:51 PM Gene Heskett <[email protected]> wrote: > > I wound up getting some 18 gauge from amazon, the next size down was > > 28 gauge. Even at .5 amps, that seemed a bit small. But by the time > > its strung thru all the cable chain, estimated at 17-18 feet, I'd > > druther be big enough than to find I've only 8 volts at the 12 volt > > motor. > > #28 has 10 times the resistance per foot of #18 and this has 10 times > the resistance of #8. It is not a coincidence. A difference in 10 > AWG is a factor of 10 cross-section area. > If you had used #28 wire on a 20 foot run the voltage drop (over the > 40 foot 2-way length) would have been 1.3 volts at 0.5 amps. But now > with #18 the drop is 0.13 volts.
Good to know Chris, thanks. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
