@openstreetmap/id-tagging-schema/data/presets/power/transformer.json

The OpenStreetMap tagging model used by the iD editor

{
    "icon": "temaki-power_transformer",
    "fields": [
        "ref",
        "operator",
        "transformer",
        "location",
        "rating",
        "devices",
        "phases"
    ],
    "moreFields": [
        "frequency",
        "manufacturer",
        "voltage/primary",
        "voltage/secondary",
        "voltage/tertiary",
        "windings",
        "windings/configuration",
        "windings/auto"
    ],
    "geometry": [
        "point",
        "vertex"
    ],
    "tags": {
        "power": "transformer"
    },
    "name": "Transformer"
}