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Spark yin Posted 13 years ago
Science & IT

America Plug

Why there is a hole in the AC power plug pin in America?
  

Top answer

Why there is a hole in an AC power plug prong in America? The contacts in the receptacle are designed to rest in the hole under spring tension to help retain the plug in the socket.

  • Why there is a hole in an AC power plug prong in America?
  • The contacts in the receptacle are designed to rest in the hole under spring tension to help retain the plug in the socket.
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1 Answers
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Why there is a hole in an AC power plug prong in America?


The contacts in the receptacle are designed to rest in the hole under spring tension to help retain the plug in the socket.

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