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From Apache Wiki <>
Subject [Cocoon Wiki] Update of "power cord" by wangdongqing
Date Fri, 17 Feb 2006 08:25:51 GMT
Dear Wiki user,

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The following page has been changed by wangdongqing:

New page:
A '''mains cable''' ([[Commonwealth English]]) or '''power cord''' ([[American English]])

cable that temporarily connects an [[Small appliance|electrical appliance]] to an electrical

power source.  The term is generally used for cables connecting to a single-phase 

[[alternating current]] power source at "[[mains]] [[voltage]]" (100 to 240 volts, depending

on the location).  The terms '''power cable''', '''mains lead''' or '''flex''' are also used.

The term '''cord set''' is also used to distinguish those cords that include connectors molded

to the cord at each end.

[[United States|American]], [[Canada|Canadian]] or [[Japan]]ese power cords tend to be bulkier

than the mains cables used in the rest of the world, because of the higher currents required

to deliver the same power ([[watt]]s) at 110 V compared with 230&nbsp;V.  

Power cables may be either fixed or detachable from the appliance.  In the case of detachable

leads, the appliance end of the power cord has a socket (female connector) rather than a plug

(male connector) to link it to the appliance, to avoid the dangers from having a live 

protruding pin.  Cords may also have twist-locking features, or other attachments to prevent

accidental disconnection at one or both ends.

Common types of detachable power cable have appliance-side connectors such as the ''[[IEC

60320 C13]]'' sometimes colloquially known as an "IEC connector" or "IBM plug"  (commonly

for higher current appliances where an earth or ground connection is required) and ''[[IEC

60320 C7]]'' commonly used for low-current applications such as an [[electronic power 

supply|power supply]] inlet for use with a [[laptop computer]]. The IEC C7 is also known as

"figure-of-eight lead" (connecting by two small round pins, with round insulating bushings;

the connector has a figure-of-eight cross section).

IEC power cables come in high-temperature and low-temperature variants, as well as various

current capacities.  The connectors have slightly different shapes to ensure that it is not

possible to substitute a cable with a lower temperature or current rating, but that it ''is''

possible to use an over-rated cable.  Cords also have different types of exterior jackets

available to accommodate environmental variables such as moisture, temperature, oils, 

sunlight, flexibility, and heavy wear.  For example, a heating appliance may come with a cord

designed to withstand accidental contact with heated surfaces.

Note that the same types of connectors are used with both 110&nbsp;V and 230&nbsp;V

cables, so care must be used when moving appliances between countries with different voltage

standards &mdash; substituting a power cord that matches local power outlets will result
in an 

incorrect voltage being applied to the appliance or equipment. Unless explicitly labelled

capable of handling local voltages, this is very likely to damage or destroy the appliance.

[[Image:PC flex with CEE 7-7 plug.png]]

==See also==
* [[Alternating current]] (AC)
* [[Domestic AC power plugs and sockets]]
* [[List of countries with mains power plugs, voltages & frequencies|Chart of plugs for

* [[Extension cable|Extension cord, extension lead]]
* [[Power cable]]
* [[Power strip]]
* [[Power supply]]

== External links ==

* [] &mdash; link to buy

actual IEC 60320 specification
* [ Access Communications] &mdash; a commercial

with nice diagrams of IEC 60320 connectors
* [ Technical details and explanation (PDF) -

bilingual (German/English)]
* [] - One of The China Manufacturer Of Power Cord

[[Category:Power cables|Cord]]
[[Category:Consumer electronics]]


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