Chances are it was jury rigged and had no breakers protecting the line. It's common in India to string wiring every which way from wherever there is an existing power point. It's a wonder there aren't more house fires. I think what the article was saying is there should have been a dedicated circuit for charging. Not really misusing a nema plug but bad wiring and missing or incorrect safety systems.
Lawrence > On Nov 11, 2016, at 07:38, ROBERT via EV <[email protected]> wrote: > > I guess concern about people misusing public NEMA receptacles does have some > merit or a least in India. > > http://electric-vehicle-discussion-list.413529.n4.nabble.com/e-Rickshaw-charging-requires-a-separate-AC-power-line-gt-3killed-amp-14injured-by-Delhi-in-fire-td4684414.html > > Electric Vehicle Discussion List - e-Rickshaw charging requires a separate AC > power line> 3killed&14injured by Delhi.in > fire<http://electric-vehicle-discussion-list.413529.n4.nabble.com/e-Rickshaw-charging-requires-a-separate-AC-power-line-gt-3killed-amp-14injured-by-Delhi-in-fire-td4684414.html> > electric-vehicle-discussion-list.413529.n4.nabble.com > e-Rickshaw charging requires a separate AC power line> 3killed&14injured by > Delhi.in fire. > http://www.nyoooz.com/delhi/651683/three-killed-14-injured-as-fire-breaks-out-in-shahdara-building > ... > > > > ________________________________ > From: ROBERT <[email protected]> > Sent: Tuesday, November 8, 2016 4:56 PM > To: ROBERT; Electric Vehicle Discussion List > Subject: Re: [EVDL] Cheap L2 charging in parking places: Bolt EV'sIn > Production > > > Again I must correct myself. I looked back at the J1772 standard and some > past work that I did. An EVSE outputs a 1KHz square wave. The duty cycle of > this wave informs the the vehicle of the maximum amperage that the EVSE can > supply (rated current). The vehicle is responsible for not drawings a > current greater than the EVSE rating. All lower amperage adapters must limit > this duty cycle to the rating of the adapter. As an example. If the EVSE is > rated at 50 amps and the adapter is only rated for 20A, the adapter must > adjust the duty cycle. It is possible to design a 20A adapter with a switch > and a resistor that does not modify the duty cycle from the EVSE. This would > be an unsafe adapter design. These type adapter do exist. You are correct > in stating that no car manufacturer would use this type of design. > > > As happens many times, the discussion in a forum can get side tracked. The > original discussion (I had to look at previous emails) was concerning a large > NEMA plug system vs a large EVSE system for a parking area. I commented that > a NEMA system would works; however, it had some issues. One of the issues > was unsafe adapters usage and another was how does a vehicle with a J1772 > connector know the rating of the NEMA plug. I still stand by these two > issues. Unsafe adapters do exist and there is no way of preventing a person > from using one in an un-monitored parking area. In addition, the vehicle > cannot know the rating of the NEMA receptacle. The adapter can tell the > vehicle the rating of the adapter but not the rating of the NEMA receptacle. > > ________________________________ > From: EV <[email protected]> on behalf of ROBERT via EV > <[email protected]> > Sent: Tuesday, November 8, 2016 2:24 PM > To: Roger Stockton; Electric Vehicle Discussion List > Subject: Re: [EVDL] Cheap L2 charging in parking places: Bolt EV'sIn > Production > > How many of these adapters are approved by the vehicle manufacturer and how > many are UL listed? In addition, how many of these adapters come with a list > of vehicles for which they have been tested and certificated by the UL or the > manufacturer? In addition, I know of companies that are selling adapters > that do not issue a pilot signal (square wave). The adapters only have a > switch that show that a vehicle is connected. I guess I should not have > stated "they are not safe to use". I should have stated that these adapters > have not been shown to be as safe as the J1772 connectors installed by the > vehicle manufacturers. > > > Some car manufacturers like Tesla sell adapters. However, these adapters > should not be used with other vehicles. > > > ________________________________ > From: EV <[email protected]> on behalf of Roger Stockton via EV > <[email protected]> > Sent: Tuesday, November 8, 2016 11:26 AM > To: Electric Vehicle Discussion List > Subject: Re: [EVDL] Cheap L2 charging in parking places: Bolt EV'sIn > Production > > ROBERT via EV wrote: > >> (1) How does a vehicle with a J1772 connector know the rating of the NEMA >> outlet? > > The portable J1772 EVSE charging cord/adapter tells the vehicle via the pilot > signal how much AC current may be drawn. A 120V J1772 cord will almost > certainly tell the vehicle not to draw more than 12A, so that it is safe to > use on any 15A or 20A 120V outlet. I believe that some aftermarket cords may > be available with a 16A pilot signal or the ability for the user to configure > the cord for either 12A or 16A, however, I an unaware of an OEM cord with > this capability. > >> One can buy a J1772 to NEMA >> adapter; however, they are not safe to use. All these adapters "fake out" >> the EVSE and the user must be aware of the limitations. It would not >> surprise me to see these adapters outlawed. > > I'm not sure what sort of adapter you are thinking of. As far as I know, > every OEM that offers an EV with a J1772 charge inlet wither includes or > offers a 120V J1772 "opportunity charge" cord. This cord *is* a proper J1772 > EVSE and not only provides an appropriate pilot signal to the vehicle, but > also does not energise the charging plug until it senses that it is mated > with a J1772 receptacle. > > I can't see how one of these NEMA to J1772 opportunity charge cords can > possibly be *less* safe than an ordinary NEMA extension cord between the > outlet and a charger on the vehicle. > > Cheers, > > Roger. > > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > EV -- Electric Vehicle Discussion List - lists.evdl.org > ...<http://lists.evdl.org/listinfo.cgi/ev-evdl.org> > lists.evdl.org > The Electric Vehicle Discussion List is a forum for discussing the current > state of the art and future direction of electric vehicles (EVs). 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