After a little digging, it seems that there *was* at one time such a thing as two phase electric power, with the phases 90 degrees apart[1]
[1] https://en.wikipedia.org/wiki/Two-phase_electric_power On Sun, Feb 12, 2017 at 2:14 PM, Warin <61sundow...@gmail.com> wrote: > > I think the incorrect term '2 phase' is the split single phase (or single > phase 3 wire) that the Americans use, 120 v from 'neutral' to either line > but 240 v from line to line and that 240 v is termed '2 phase' despite the > fact that it is a single phase. All of these lines are supposed to float - > no connection to earth is supposed to be made. > > > > > > On 13-Feb-17 07:27 AM, ajt1...@gmail.com wrote: > >> On 12/02/2017 20:07, Mike Thompson wrote: >> >>> Jherome, >>> >>> ... Having spent some time in the electrical industry (in the U.S.) my >>> understanding is there is no such thing as "2 phase", only single phase and >>> three phase. >>> >>> >>> >> In terms of supply to premises, you're going to get single phase or >> 3-phase, but I think that you can still get minor power lines carrying just >> 2 phases (e.g. to 2 houses, each single phase) can't you? >> >> Best Regards, >> >> Andy >> >> (who hasn't actually done any 3-phase wiring in 40 years, so it might >> have changed a bit since then!) >> >> >> _______________________________________________ >> Tagging mailing list >> Tagging@openstreetmap.org >> https://lists.openstreetmap.org/listinfo/tagging >> > > > > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging >
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