I am already calling for eval. by a licensed electrition for other reasons. I was wondering if anyone would admit how old they are by explaining this outlet in a bedroom. There are copper contacts in all 4 slots.
Ha! Researched this for an inspection a few months back, and ended up here:
http://www.electrical-contractor.net/forums/ubbthreads.php/ubb/showflat/Number/151838/page/4#Post151838
http://www.electrical-contractor.net/Forums/ubbthreads.php/ubb/showflat/Forum/17/topic/000082/Number/0/site_id/1
http://www.electrical-contractor.net/Forums/ubbthreads.php/ubb/showflat/Forum/17/topic/000199/Number/0/site_id/1
I went to the websites, interesting, I was imagining a plug with all 4 blades. I’ve never actually seen a tandem plug (born '61) but I now rememer seeing some pics of them before. Thanks for the education and entertainment.