⁷The colors in this table apply only to the United States and Canada. A stunning diversity of colors has been “standardized” for each thermocouple type per nationality. The British and Czechs use their own color code, as do the Dutch and Germans. France has its own unique color code as well. Just for fun, an “international” color code also exists which doesn’t match any of the others. There are other deviations as well: the wire colors for type R and S thermocouples, for example, are standardized for extension-grade wire but not for thermocouple-grade wire.