On Thu, 20 Dec 2018 at 12:36, Sergio Manzi <s...@smz.it> wrote: The definition of primary v.s. secondary is about which is the exciting > part and which is the excited part. "tertiary" is pure nonsense, AFAIK. >
Power transformers can have tertiary windings: https://www.electrical4u.com/tertiary-winding-of-transformer-three-winding-transformer/ although it may not be sensible to map the ratings of a tertiary. Some transformer-isolated voltage converters may make use of a feedback winding which is (at least informally) referred to as a tertiary winding. -- Paul
_______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging