Bain Posted April 13, 2010 Report Share Posted April 13, 2010 I checked out a commercial building today that had a three-phase incoming electrical service. No big deals. Nothing out of the ordinary. But a question occurred to me . . . Three-phase electrical services have three hot SE cables coming into the house, hence its name. But the residential stuff we normally see has two hot SE cables servicing the house. So . . . drum roll . . . why is it called single phase? Why not double phase? It is what it is, to invoke a current--pun intended--cliche, but "single phase" seems like a misnomer. Quote Link to comment Share on other sites More sharing options...
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