- Contact Person : Mr. Wang Hao
- Company Name : Shenzhen Hongkai Electronics Company Limited
- Tel : 86-0755-84616379
- Fax : 86-0755-84616329
- Address : Guangdong,shen zhen,43# Longyuan Road, Longgang District
- Country/Region : China
- Zip : 518116
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A power cord, line cord, or mains cable is a cord or cable that
temporarily connects an electrical appliance to the distribution
circuits of an electrical power source via a wall socket or
extension cord.
The terms are generally used for cables using a power plug to
connect to a single-phase alternating current power source at
the local line voltage(generally 100 to 240 volts, depending
on the location). The terms power cable, mains lead or flex are
also used. A lamp cord is a light weight ungrounded two wire
cord used for small loads such as a table or floor lamp. The
term cord set is also used to distinguish those cords that
include connectors molded to the cord at each end.
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. A cord set may
include accessories such as fuses for overcurrent protection, a
pilot lamp to indicate voltage is present, or a leakage current
detector. Power cords for sensitive instruments, or audio/video
equipment may also include a shield over the power conductors to
minimize electromagnetic interference.
Connectors
Common types of detachable power cables have appliance-side
connectors such as the IEC 60320 C13 sometimes colloquially
known as an IEC connector, "kettle lead", "jug plug" or "IBM
plug" (commonly used 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 power
supply inlet for use with a laptop computer. The IEC C7 is also
known as a "figure-of-eight lead" (connecting by two small round
pins, with round insulating bushings; the connector has a
figure-of-eight cross section). The polarised IEC 60320 C5
connector is now commonly used on the AC side of laptop computer
power supplies. The IEC C5 is commonly known as "cloverleaf
plug" or "Mickey Mouse plug" because of the shape of its 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.
Worldwide, more than a dozen different types of connectors are
used for fixed building wiring. Products sold in many different
markets can use a standardized IEC connector and then use a
detachable power cord to match the local electrical outlets.
This simplifies safety approvals, factory testing, and
production since the power cord is a low-cost item available as
a commodity. Note that the same types of appliance-side
connectors are used with both 110 V and 230 V power cables, so
care must be used when moving appliances between countries with
different voltage standards substituting a power cord that
matches local power outlets will result in an incorrect voltage
being applied to the appliance or equipment. Some devices have a
slide-switch to adapt to different voltages, or wide-ranging
power supplies. Unless explicitly labelled as capable of
handling local voltages, this is very likely to damage or
destroy the appliance.
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