If two-phase power isn't currently in use anywhere, it simply means we won't see any instances of the tag phases=2, just like how we'll never see phases=17. It doesn't make anything fundamentally wrong with the tagging scheme. I believe this is a good proposal that should be voted on.
________________________________ From: Mike Thompson <miketh...@gmail.com> Sent: February 12, 2017 6:07 PM To: Tag discussion, strategy and related tools Subject: Re: [Tagging] Feature Proposal - RFC - Power pole extension 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 [http://upload.wikimedia.org/wikipedia/commons/thumb/a/ae/Elementary_Two_Phase_Alternator.jpg/400px-Elementary_Two_Phase_Alternator.jpg]<https://en.wikipedia.org/wiki/Two-phase_electric_power> Two-phase electric power - Wikipedia<https://en.wikipedia.org/wiki/Two-phase_electric_power> en.wikipedia.org Two-phase electrical power was an early 20th-century polyphase alternating current electric power distribution system. Two circuits were used, with voltage phases ... On Sun, Feb 12, 2017 at 2:14 PM, Warin <61sundow...@gmail.com<mailto: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<mailto: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<mailto:Tagging@openstreetmap.org> https://lists.openstreetmap.org/listinfo/tagging _______________________________________________ Tagging mailing list Tagging@openstreetmap.org<mailto:Tagging@openstreetmap.org> https://lists.openstreetmap.org/listinfo/tagging
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