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The 3 pin plug is used to connect (and eventually disconnect) various devices requiring an AC power supply to and from the main power supply.

As the name suggests, the 3 pin plug consists of three pins :-

  1. Longer one, usually on the top for most standard plugs : is the earth [ E ]
  2. Left pin (Usually) : is the Line connection [ L ]
  3. Right pin (Usually) : is neutral [ N ]

Next to the pins, on the plug, the three pins and their respective function is given by E, L and N.

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14y ago

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