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What does a "1 Gang" mean when talking about electrical boxes?

Example: CARLON 1-Gang Metal Adjustable Electrical Box (Lowes.com)

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It refers to the width of the box. A 1-gang box is wide enough for a switch or duplex receptacle. The idea is that you can "gang" up electrical components in the box.

One gang

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Two gang

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Three gang

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X gang

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Common sizes

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  • That first picture for 3-gang is actually a 1-gang turned sideways. – Brad Gilbert Jan 24 '12 at 4:39
  • No gang can argue with that one.. well done – Piotr Kula Jan 24 '12 at 22:44
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The n-Gang terminology is also used in the UK, but with somewhat different meaning.

  • For sockets it is similar, except UK plugs are bigger and not normally stacked two on top of each other. So a 2-Gang is wider than a 1-gang and has 2 sockets. The dimensions are of course different from the US ones.
  • Blank face plates are similar. A 2-Gang plate is the same size as a 2-Gang socket.
  • For switches it refers to the number of switches. 1-Gang, 2-Gang and 3-Gang switches may be the same size, but have 1, 2 or 3 switch buttons.

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