Extension cord

（重定向自Extension board）

NEMA-1 extension cord, common in the United States

A power strip with power indicator and individual switches for each socket (UK)

An extension cord, power extender, drop cord, or extension lead is a length of flexible electrical power cable (flex) with a plug on one end and one or more sockets on the other end (usually of the same type as the plug). The term usually refers to mains (household AC) extensions but is also used to refer to extensions for other types of cabling. If the plug and power outlet are of different types, the term "adapter cord" may be used. Extension cable is also used, but that has a distinct meaning from extension cord. Most extension cords range from around two to thirty feet in length although they are made up to 300 feet in length.

单词	Extension board
释义	Extension board 英语百科 Extension cord （重定向自Extension board） An extension cord, power extender, drop cord, or extension lead is a length of flexible electrical power cable (flex) with a plug on one end and one or more sockets on the other end (usually of the same type as the plug). The term usually refers to mains (household AC) extensions but is also used to refer to extensions for other types of cabling. If the plug and power outlet are of different types, the term "adapter cord" may be used. Extension cable is also used, but that has a distinct meaning from extension cord. Most extension cords range from around two to thirty feet in length although they are made up to 300 feet in length.
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