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Letters naming national plug patterns.
Also known as: Plug type letters, National plug classification
The lettering system by which national mains plug and socket patterns are identified, from type A upward.
Identifies national mains plug and socket patterns by letter.
Contexts: Electrical equipment
Is an informal classification with no standards body behind it, so the letters are widely used and are not defined by anyone in particular.
Contexts: Electrical equipment
A single capital letter used as a label for a plug pattern, not a mark that appears on the plug itself.