> On 15 Sep 2010 at 15:47, Dennis Miles wrote:
>
>> If the driver/owner of a $250,000 RV Bus can plug in to
[email protected], =
why
>> can not you or I ???
>
> The usual range plug is fine for us as EV hobbyists, but I'm not sure sure
> it's well suited to general use.
>
> For one thing, it takes a fair bit of oomph to insert and remove the plug.
> Some drivers, especially older ones, might not have the strength.
>
> Also, the pins are hot and exposed as you insert or remove the plug from =
the
> receptacle, creating a signifcant shock hazard.
>
> Most European 240v connectors are recessed, and have insulator sleeves on
> the pins. This makes them quite a bit safer as it's much more difficult to
> contact live pins. Ours don't have those features. I suspect that i=
f the
> standard NEMA plugs were being developed today, the manufacturers' attorn=
eys
> would have fits over the potential for liability.
>
> I think the US-spec 14-50 pair is probably acceptable when the recept is
> mainly a disconnecting device, used infrequently, as it is for ranges and
> welders. It's less so when the connection is to be made one or more ti=
mes
> per day.
>
> So, I agree that an improved plug/receptacle pair is a good idea for mass
> market EVs. Is J1772 the right answer? I don't know, but it looks l=
ike
> we're stuck with it, at least for now.
>
> David Roden - Akron, Ohio, USA
> EVDL Administrator
>
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