2-phase power as in two phases, neutral and earth?
As in two hot and one neutral, 110VAC RMS from each hot to neutral, 220VAC RMS from hot to hot.
Bzzzzzztt. Wrong answer! What you have is plain old 220 single phase just like virtually everyone else has. Actual two-phase power hasn't been used in this country for decades, and when it was, it was for industrial use only. It was NEVER installed in homes.
I have to agree. I'm an EE and if any of my old profs heard me call residential/commercial centertapped 240 V as "two phase" -- why, they'd flail me with a Smith Chart.
I'm also an EE here and I don't recall what my professors may have said on the subject. I don't much care cause they didn't do much with household power. I still use the term as it's accurate and it fits.
--
Clark Martin
Redwood City, CA, USA
Macintosh / Internet Consulting
"I'm a designated driver on the Information Super Highway"
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