pdh:
In my Leviton Catalog, I show NEMA 7-30 products which are 30A 277V.
They also show NEMA 7-50 which are 50A 277V.
go to
http://www.levitonhelpdesk.com/catalog/ and search for "9730" or "9750".
I don't see any 277V 20A, however, except in the locking style L7-20.
[This message has been edited by kale (edited 03-14-2006).]
