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Three Phase Transformer Info

This website explains it all:

http://www.elec-toolbox.com/usefulinfo/xfmr-3ph.htm 

It was at that point that All The President's link Men took its first steps toward cinematic glory. In the 1970s through the development and production of this film Redford wore predominantly one watch his link aptly named Red Submariner. Of course there's one exception that being the link Doxa Sharkhunter he wore in Three Days of the Condor also his personal timepiece.

The H558-5009 was part of Seiko's early '80s output. I wouldn't go so far as link to call it a popular watch in its link day but it's certainly one of the most specific watches of its time. It was so big and aggressive that it was almost destined to land on Schwarzenegger's wrist. In addition to Predator he's link also known for wearing it in 1985's classic Commando.