Hubbell HBL7314C Locking Connector， 3 Pole and 3 Wire， 20 amp， 125/250V， Black/White<img src="http://ecx.images-amazon.com/images/I/41UrrFXEOiL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41XVqlHFKxL.jpg" noproxy>