To do stuff like this, one must also be sure the wire is fully unreeled so that it can dissipate heat. Excess heat will ruin your day.
Wire that is still on a reel, or otherwise coiled up or in contact with another section of warm wire, must be heavily derated. Or more specifically, the insulation must be able to handle the heat buildup. After all, the insulation's temperature limits determine the maximum heat that can be handled (up to the point that the wire itself melts), and the resistance of the wire will lead to I^2R watts lost as heat. (And you can divide that by the wire length to get watts per foot.) Bob, have you ever charged an EV via a SWER connection? On Sun, Jul 25, 2021, 12:52 Robert Bruninga via EV <[email protected]> wrote: > TIP: Never be caught without wire! > > You can charge a Volt (8 amps default) via 100' of simple #18 > lamp zip cord if you wanted to. (and had the 3rd GND wire). > The 5v line drop is within the standard for acceptable voltage drop. > > I routinely carry hundreds of feet of #18 zip cord for backup > and emergency power in all my vehicles because I can carry > four times as much wire under the seat in the same volume > as the standard stiff double insulated orange extension cords. > > See my spool: http://aprs.org/prius/photos/220cord3x.JPG > Ignore the 220V label, this image was for when I remotely power > things (universal power supplies) from the 220V prius battery. > > When I find such a spool, I pull off the 15' or 20' of stiff plastic orange > cord and re-wind it with 100' to 120' of #18 lamp zip cord. Note: to get > 120',you have to be very careful and obsessive in acting like a fishing > reel and laying in the zip cord flat and adjacent (no twists). But you > can do it. [But for dual wire use only - No GND wire] > > I showed up once at a downed tree and was able to plug in TWO > of these 100' cords of #18 zip cord in series to run a small > chain saw and save the day. Yes, there was noticible voltage drop > but still plenty of power to run the saw. I have even run an electric > lawnmower through one when it was more convenient than digging > out all the old orange and green cords "from around back". > > Oh, also I was able to use two of these at a rest stop for a small > space heater (on low-power (700W) and sleep in the car overnight > (well, several hours anyway) because the black zip cord just kind-of > disappeared in the joint to cross the sidewalk and then along the > edge of the sidewalk around to the back of the building where the > vending machines were plugged in. > > I would never have gotten away with that using 200' of bright > thick orange extension cords. > > Anyway, just some tall tales from the armchair > (never be caught without wire!) > Bob, WB4APR > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20210725/b264f612/attachment.html > > > _______________________________________________ > Address messages to [email protected] > No other addresses in TO and CC fields > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > ARCHIVE: http://www.evdl.org/archive/ > LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20210725/b697ac8b/attachment.html> _______________________________________________ Address messages to [email protected] No other addresses in TO and CC fields UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/ LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org
