An extension cord (also known as a power extender or an extension lead) is a length of flexible electrical 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 extensions but is also used to refer to extensions for other types of cabling.
A power strip is a block on the end of a cable with a number of sockets (usually 3 or more), often arranged in a line. This term is also used to refer to the whole unit of a short extension cord terminating in a power strip.
An extension reel is an extension lead that rolls up, usually into the socket end, which in most cases has more than one socket on it (often 2 or 4).
A power cord is similar but the socket end is designed to mount with a panel plug (usually IEC or figure 8 style) and is usually much shorter.
Extension cords may refer to cables that transmit data, electricity, or both (e.g. USB extension cable).
Some extension cords also incorporate safety features, such as a polarized plug and receptacle, grounded terminals, a 'power-on' indicator, a fusible link, or even a residual-current device (also known as a ground-fault circuit interrupter or GFCI).
An extensionreel is an extensionlead that rolls up, usually into the socket end, which in some cases has more than one socket on it (often 2 or 4).
Extension cords may sometimes refer to cables that transmit data, electricity, or both (for example, USB extensioncable).
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