Uh, folks, I hate to spoil everyone’s fun here but I’m almost certain Joe’s original picture is of an NEC Class 1 Division 1 receptacle that takes a special cord cap to use. The point of the proprietary cord cap is that the served utilization equipment can also be used in an ordinary location—id est, inserted into a plain-vanilla NEMA 5-20 or 6-20 receptacle. {Ground-pin-location arguments by others...not me.}

See: www.crouse-hinds.com/CrouseHinds/pdf/2p-7grp.pdf

     [Linked Image from 6l6.net]




[This message has been edited by Bjarney (edited 11-02-2003).]