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  1. AC power plugs and sockets: British and related types

  2. History of AC power plugs and sockets - Wikipedia

  3. AC power plugs and sockets - Wikipedia

  4. Museum of Plugs and Sockets: Historic BS 546 models

  5. Museum of Plugs and Sockets: BS 546 plugs and sockets

  6. Museum of Plugs and Sockets: Non-earthed BS 546 types

  7. BS546 (UK) standard plug type classifications by letter BS546 (UK ...

  8. Power plug, socket & mains voltage in Great Britain

  9. Why are UK plugs different? - BBC Science Focus Magazine

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