There's an intersting discussion about this here:
https://wiki.openstreetmap.org/wiki/Talk:Tag:power%3Dtransformer Here it is suggested that split single-phase power be tagged as phases=2. I disagree with this, and instead advocate tagging it as phases=1 voltage=240. In North America at least, this implies split single-phase power. The tag phases=2 should be reserved for the rare instances (maybe not so rare in some parts of the world?) where actual two-phase power is present. Either way, this needs to be standardized and whatever decision we come to needs to be made clear on the wiki pages for power=transformer and the new power pole extension proposal. ________________________________ From: Kevin Kenny <kevin.b.kenny+...@gmail.com> Sent: February 12, 2017 7:14 PM To: Tag discussion, strategy and related tools Subject: Re: [Tagging] Feature Proposal - RFC - Power pole extension I think I've seen two-phase power once, in a commercial building in Philadelphia, built around 1905. All the high-power uses (HVAC, mostly) in the building were actually driven off 208 or 480 volt three-phase, provided by phase-converting transformers and switch gear. There were a handful 240-volt circuits that were stepped down (or tapped?) from the 480, and a lot of the lighting was run off the 277-volt phase-to-neutral of the 480 circuits. The building electricians regarded the two-phase four-wire power as a damned nuisance. Two-phase is surely uncommon in the US, while split-single-phase is ubiquitous. On Sun, Feb 12, 2017 at 6:41 PM, Mike Thompson <miketh...@gmail.com<mailto:miketh...@gmail.com>> wrote: On Sun, Feb 12, 2017 at 4:34 PM, Warin <61sundow...@gmail.com<mailto:61sundow...@gmail.com>> wrote: On 13-Feb-17 10:25 AM, Tristan Anderson wrote: 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. There will need to be very careful wording of phases=2 to avoid American mappers misusing this tag for 240v split single phase. That is my concern. This is a typical mistake. I think there will be instances of phase=2 occurring in the USA, possibly many instances. Do you mean instances of the tag phase=2, or actual two phase power? _______________________________________________ Tagging mailing list Tagging@openstreetmap.org<mailto:Tagging@openstreetmap.org> https://lists.openstreetmap.org/listinfo/tagging
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