cables circuits colour construction construction:voltage description designation disused endpoint:busbar frequency full_id gas_insulated layer line location material name noname not:operator:wikidata ogc_fid operator operator:2 operator:wikidata operator:wikipedia osm_id osm_type power ref ref:2 ref:left ref:right river:waterway_distance seamark:cable_overhead:category seamark:cable_overhead:clearance_height_safe seamark:type source:ref start_date voltage wikipedia wires