Years ago I worked as a commercial electrician. It has been my experience,
even still, that any application that would need a L6-50 ends up using the
one you specified simply referred to as the "CA Standard" which is a 50a
grounded twist-lock.
My educated guess, is that this was formed years ago by the movie industry
for portable/temporary power, and became the defacto standard before NEMA
had a foothold.
It is used in all "spider boxes", many gensets on wheels, and at convention
halls, stadiums, etc.
Here they are on the same site you provided a link to:
http://www.stayonline.com/searchresult.aspx?categoryid=2270
Personally, I use this on my charger and think it's a good standard. It's
too bulky for residential use though, such as dryers, ranges, etc., where
you need a low profile.
-Phil
----- Original Message -----
From: "Christopher Robison" <[email protected]>
To: <[email protected]>
Sent: Monday, October 29, 2007 1:17 PM
Subject: [EVDL] What happened to the NEMA L6-50?
>I sent this a while back, and never got any response. I'll try one more
> time, and then I'll drop it, assuming it's an unsolvable mystery.
>
> I've been looking at plug standards that might be useful for plugging in
> EVs and/or making heavy extension cords for the public events we go to.
>
> I've noticed something that has me completely baffled. NEMA has a
> designation for an L6-50 plug, though I've looked online and found a lot
> of folks (apparently including electrical professionals) claiming there
> is no such designation, which is obviously untrue. The design does
> exist, and the diagram for it can be viewed here, among plenty of other
> places:
>
> http://www.stayonline.com/reference-nema-locking.aspx
>
> This, one would think, would be the official North American standard for
> a 240VAC, 50A locking plug, since NEMA defines those standards.
>
> Problem is, L6-50 devices (plug, connector, inlet) do not seem to exist
> in the material world. Apparently no manufacturer produces devices to
> this spec. Instead there's this non-NEMA "California standard" CS8265N
> plug design, that seems to be what everyone has decided is the way we're
> supposed to do 50A locking plugs.
>
> Anyone have any background on how this happened?
> --
> Christopher Robison
> [email protected]
> http://ohmbre.org <-- 1999 Isuzu Hombre + Z2K + Warp13!
>
> _______________________________________________
> For subscription options, see
> http://lists.sjsu.edu/mailman/listinfo/ev
>
_______________________________________________
For subscription options, see
http://lists.sjsu.edu/mailman/listinfo/ev
even still, that any application that would need a L6-50 ends up using the
one you specified simply referred to as the "CA Standard" which is a 50a
grounded twist-lock.
My educated guess, is that this was formed years ago by the movie industry
for portable/temporary power, and became the defacto standard before NEMA
had a foothold.
It is used in all "spider boxes", many gensets on wheels, and at convention
halls, stadiums, etc.
Here they are on the same site you provided a link to:
http://www.stayonline.com/searchresult.aspx?categoryid=2270
Personally, I use this on my charger and think it's a good standard. It's
too bulky for residential use though, such as dryers, ranges, etc., where
you need a low profile.
-Phil
----- Original Message -----
From: "Christopher Robison" <[email protected]>
To: <[email protected]>
Sent: Monday, October 29, 2007 1:17 PM
Subject: [EVDL] What happened to the NEMA L6-50?
>I sent this a while back, and never got any response. I'll try one more
> time, and then I'll drop it, assuming it's an unsolvable mystery.
>
> I've been looking at plug standards that might be useful for plugging in
> EVs and/or making heavy extension cords for the public events we go to.
>
> I've noticed something that has me completely baffled. NEMA has a
> designation for an L6-50 plug, though I've looked online and found a lot
> of folks (apparently including electrical professionals) claiming there
> is no such designation, which is obviously untrue. The design does
> exist, and the diagram for it can be viewed here, among plenty of other
> places:
>
> http://www.stayonline.com/reference-nema-locking.aspx
>
> This, one would think, would be the official North American standard for
> a 240VAC, 50A locking plug, since NEMA defines those standards.
>
> Problem is, L6-50 devices (plug, connector, inlet) do not seem to exist
> in the material world. Apparently no manufacturer produces devices to
> this spec. Instead there's this non-NEMA "California standard" CS8265N
> plug design, that seems to be what everyone has decided is the way we're
> supposed to do 50A locking plugs.
>
> Anyone have any background on how this happened?
> --
> Christopher Robison
> [email protected]
> http://ohmbre.org <-- 1999 Isuzu Hombre + Z2K + Warp13!
>
> _______________________________________________
> For subscription options, see
> http://lists.sjsu.edu/mailman/listinfo/ev
>
_______________________________________________
For subscription options, see
http://lists.sjsu.edu/mailman/listinfo/ev