> Note that using steel cable and even getting somewhat close to the same > resistance would make the cable several times heavier and stiffer, so > much more difficult to handle. (using steel cable) That is why I suggest the steel wire be used only for the signal wires which only have milliamperes of current so that is not a problem. The power conductors made of stranded aluminum with copper coating is actually lighter than pure copper, and being stranded, it is as flexible as the insulating sheath covering all the wires as a cable. The several extra strands of steel cable are to impede cutting the cables to make the thief take longer, perhaps a sign advising the EVSE cable is the internally armored type and contains no pure copper wire suitable for salvage. (Applying the same concept as advertising to inhibit burglary used by 'Alarm" companies with their 'yard signs' and 'window stickers' stating the home or business are protected by alarms.)
On 9/1/14, Ben Goren via EV <[email protected]> wrote: > On Sep 1, 2014, at 12:53 PM, Cor van de Water via EV <[email protected]> > wrote: > >> Note that using steel cable and even getting somewhat close to the same >> resistance would make the cable several times heavier and stiffer, so >> much more difficult to handle. > > First, this isn't at all a problem limited to EV charging. Anybody know > what's done in other situations to stop copper theft? > > Next, what about alloys that contaminate the copper or reduce its content in > ways that make it undesirable? Or, steel-clad copper that's presumably > resistant to cutting? > > And, of course, much of this is because of the value in scrap copper > combined with the anonymity of "recycling" operations. Some sort of > regulation might be called for, but I don't know how to pull that off. > > A part of me likes the idea of energizing the wires, but, fortunately, I'm > old enough to keep my ten-year-old inner child out of the decision-making > process? > > b& > -------------- next part -------------- > A non-text attachment was scrubbed... > Name: signature.asc > Type: application/pgp-signature > Size: 801 bytes > Desc: Message signed with OpenPGP using GPGMail > URL: > <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140901/815dbf5f/attachment.pgp> > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > For EV drag racing discussion, please use NEDRA > (http://groups.yahoo.com/group/NEDRA) > > -- Dennis Lee Miles (*[email protected] <[email protected]>)* * Founder: **EV Tech. Institute Inc.* *Phone #* *(863) 289-0690 (12 noon to 12 midnight Eastern US Time)* *Educating yourself, does not mean you were **stupid; it means, you are intelligent enough, **to know, that there is plenty left to learn!* * You Tube Video link: http://youtu.be/T-FVjMRVLss <http://youtu.be/T-FVjMRVLss> * _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
