Interesting. Obviously the plastic body of the smart was quite flammable and maybe Mercedes should address that problem. My normal comeback on these incidents is - have you noticed those rectangular black spots along the sides of the highways in summer?
The stated reason in the article was an electrical fault but it could have been arson as well. This occurred yesterday and the article was published about 8 hours after the fire was reported put out. It seems unlikely that it’s actually been investigated yet and that was just the initial opinion of either the fire department on sight or maybe even the reporter. These incidents should be investigated the failure mode determined and remediation recommended for future installations. Maybe the EVSE’s should have a thermal sensor so that connection blocks that are getting too hot cause a shutdown and the charging circuits in the car should have the same. I know the battery modules do (or should) but the main charger circuits could have the same. We are now required to install spark gap circuit breakers in houses on the circuits that are in bedrooms, smoke detectors, etc. it would be small leap to require similar in the vehicle and/or the EVSE circuit. It would be really nice to know as well if the fault was in the car or the EVSE. If cars were airplanes all this would be second nature. We demand to know why each and every plane crashes but just assume that unless a particular model car starts to show in the statistics we just ignore problems and assume human error or a one off manufacturing defect and go ‘oh well…" Regards, Lawrence Harris lhar...@haritech.com > On Jul 10, 2017, at 16:43, Cor van de Water via EV <ev@lists.evdl.org> wrote: > > Not true, the EVSE is supposed to limit the charging current to what is > safe to draw from the electrical connection. > For example, a 240V 30A circuit must be protected by the EVSE telling > the car that it can only draw 24A (80% of 30A) continuous. > The EVSE needs to select the proper duty cycle of the pilot signal to > convey this to the EV. > If a 30A circuit is attached to an EVSE that expects a 40A circuit, it > will tell the EV to draw up to 32A, overloading the circuit. > > Besides a mis-match like that (which I have once encountered myself) > there are other concerns, such as a worn, damaged or corroded > contact in the charging plug, either of the EVSE or the car. > And then there is the ever-present danger of a failing wire in the cord. > This is not exclusively a problem from EV and EVSE, as my colleague had > a small fire in his house this last winter > due to the wire at the back of the wall plug starting to break > internally and the remaining strands overheated to the point > of setting the cord on fire. > > I have had similar experience with an outlet in a previous home, where > the wire coming out of the wall probably was nicked > before being attached, so after successfully washing loads of laundry > for years (water was heated electrically so the washer > drew about 12 Amps continuously for an hour or so during a hot wash > cycle) suddenly one day the bathroom filled with smoke > and the wire inside the outlet burned clean through. > There had been no movement of that wire, so no gradual breakage - this > was purely a resistive heating induced failure. > > Besides the EVSE itself, the circuit it is fed with and the charging > plug contacts, > also the circuitry inside the car (AC powered HV battery charger) can > fail, for example an improperly tightened wire > or a loss of water cooling overheating the charger, which subsequently > fails and burns... > So many different ways to let the magic smoke out... > Cor. > > -----Original Message----- > From: EV [mailto:ev-boun...@lists.evdl.org] On Behalf Of David Kerzel > via EV > Sent: Monday, July 10, 2017 12:36 PM > To: 'brucedp5'; 'Electric Vehicle Discussion List' > Subject: Re: [EVDL] ? Is this really a Smart Fortwo ED EV that burnt to > acrisp ? > > What does the EVSE have to do with this? The car makes the decisions. > The EVSE is just a super safe power cord. > David Kerzel > > -----Original Message----- > From: EV [mailto:ev-boun...@lists.evdl.org] On Behalf Of brucedp5 via EV > Sent: Monday, July 10, 2017 4:56 AM > To: ev@lists.evdl.org > Subject: [EVDL] ? Is this really a Smart Fortwo ED EV that burnt to a > crisp ? > > % First look at: > > > http://electric-vehicle-discussion-list.413529.n4.nabble.com/EV-fire-Fau > lty- > wall-mounted-EVSE-completely-burns-Smart42ED-EV-uk-td4687296.html > EV-fire: Faulty wall-mounted EVSE completely burns (?Smart42ED?) EV.uk > Electric car gutted by flames after it set fire while charging An > electric car was left completely burnt out after it set on fire while > charging. The vehicle was destroyed and a nearby building was damaged by > smoke in the ... > > > then at the end I placed some image links of Smart EV frames without > their body. > > The EV's body was not metal and completely bunt away. Only the metal > frame was left, including the metal frame for the doors. Compare, and > decide. Was this EV really a Smart? Or was it something else. > > > > > http://evdl.org/evln/ > For all EVLN EV-newswire posts > > > {brucedp.neocities.org} > > -- > View this message in context: > http://electric-vehicle-discussion-list.413529.n4.nabble.com/Is-this-rea > lly- > a-Smart-Fortwo-ED-EV-that-burnt-to-a-crisp-tp4687297.html > Sent from the Electric Vehicle Discussion List mailing list archive at > Nabble.com. > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag > racing at NEDRA (http://groups.yahoo.com/group/NEDRA) > > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag > racing at NEDRA (http://groups.yahoo.com/group/NEDRA) > > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > Read EVAngel's EV News at http://evdl.org/evln/ > Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20170710/f901fd4e/attachment.htm> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
