Hubbell 8300

Yes there are. You can tell which ones by the color. Issolated ground duplexes are usually orange.

Audiogon member Audioparts (Stu Wein) sells cyro'd ones with the issolated ground. Search under member directory or just go to this link.

http://cgi.audiogon.com/cgi-bin/cl.pl?accspowr&1049116479

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