Bl This standard establishes the dimensions and electrical magnitudes characteristics of bipolar coupling plugs intended for use in fixed home electrical installations with ground connection and nominal voltage of 220V. B-2 This standard does not include mating plugs for industrial uses. B-3 This standard does not include plugs intended for use in explosive environments or with corrosive gases or in on-board installations.
IRAM 2086-1948 history
1948IRAM 2086-1948 Grounded socket (standard voltage is 200V, household two-pole type)