What Is A Power Cord? - Shaoxing Green Electric Co., Ltd.
W h a t Is A P o w e r C o r d ?
W h a t Is A P o w e r Cord ?
Brief Summary
The power cord is an electrical component that we
often use it in our modern daily life. The power cord
is also called the power supply cord. It is a necessary
path to provide energy sources for electrical
components or equipment. It is one of the basic
elements of electrical products or components, such
as computers, televisions, printers, rice cookers, hair
dryers, ect. that we often use in work and life.
The power cord generally consists of 3 parts: plug,
wire / cable and terminal connector.
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What Is A Power Cord? - Shaoxing Green Electric Co., Ltd.
String Lights
Solar Lights
[https://www.gepowercord.com/power-cords/]
Below we will learn more about the
power cord from many aspects.
The history of power cords
As early as BC, the Greek scholar Milly discovered the
existence of “electricity”. In early 1600, the British
doctor Gilbert formally wrote an article about the
phenomenon of “electricity”. Later, the British Gray
and French Du e discovered electricity separately.
The conductivity and insulation and electrostatic
phenomena. The most famous in history is the kite
experiment conducted by American scientist Franklin
in September 1752, which proved that electricity
exists in nature.
In 1831, British scientist Faraday discovered the “law
of electromagnetic induction”, the discovery of
current magnetic e ects, and the proposal of
electromagnetic theory, which laid the foundation for
the widespread application of electricity and power
cord in the later period.
In 1879, the American scientist Edison created the
electric light, and the power cord has a wider
application prospect in daily life.
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[https://www.gepowercord.com/string-lights/]
In 1882, Edison created the rst power transmission
system, in New York, USA, he used copper rods
wrapped in jute were placed in a hard pipe of
bituminous substance.
In 1889, Franci of the United States created oilimpregnated paper insulated power cables, which are
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What Is A Power Cord? - Shaoxing Green Electric Co., Ltd.
also commonly used high-voltage power cables now.
With the development of technology and demand,
the development of power cords is also very rapid.
In the early days of home electri cation, people
mainly used bare copper wires and used cotton cloth
for insulation, and later used rubber or bituminous
coated cotton cloth for insulation.
In the 1880s, the invention of vulcanized rubber
made the power cord take a big step towards
modern development. Vulcanized rubber can be used
as cable insulation material. Later, polyethylene and
rubber were used as insulating materials. In 1906, an
armored cable was manufactured. This cable has
good protection to the conductor, but it is expensive.
In the 1950s, people began to use PVC (Polyvinyl
chloride) insulated cables to this day.
Note: Some people use aluminum as a
conductor to make power cords, which is
very dangerous.
The reasons are as follows:
. High resistivity: the resistivity of aluminum cable is
about 1.68 times higher than that of copper cable.
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What Is A Power Cord? - Shaoxing Green Electric Co., Ltd.
. Low strength: the allowable stress of copper at
room temperature is 7 ~ 28% higher than that of
aluminum. Especially the stress at high temperature,
the di erence between them is very far.
. No fatigue resistance: aluminum is easy to break
after repeated bending, while copper is not. In terms
of elasticity index, copper is also about 1.7 ~ 1.8 times
higher than aluminum.
. Poor stability and easy corrosion: copper wire is
resistant to oxidation and corrosion, while aluminum
wire is easy to be oxidized and corroded.
. Small current carrying capacity: due to the high
resistivity, the allowable current carrying capacity
(maximum current that can be passed) of copper
cable with the same section is about 40% higher than
that of aluminum cable.
. High calori c value: under the same current, the
calori c value of copper cable with the same section
is much smaller than that of aluminum cable, making
the operation safer.
. Oxidation resistance and corrosion resistance: the
connector of copper cable has stable performance
and will not cause accidents due to oxidation. The
joint of aluminum cable is unstable, and re accidents
often occur due to the increase of contact resistance
and heating due to oxidation. Therefore, the accident
rate is much higher than that of copper cable.
Types of power cord
There are many ways to classify power cords, which
can be divided into computer power cords, light
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What Is A Power Cord? - Shaoxing Green Electric Co., Ltd.
power cords, power cords for small appliances,
power cords for generators, etc. according to their
use; people can also classify power cords according to
di erent plugs, due to safety requirements ,
Countries in the world have formulated their own
power cord production safety standards and
certi cation systems according to their own
conditions. Therefore, there have been many plug
standards and certi cations in the world. For safety,
please buy and use the power cords produced
according to safety standards and with safety
certi cates. The current main plug standards and
certi cation marks in the world are as follows:
STANDARD
CERTIFICATE MARK
COUNTRY
[https://www.gepowercord.com/chinapower-cords/]
CCEE
China
[https://www.gepowercord.com/europepower-cords/]
VDE
Germany
[https://www.gepowercord.com/europepower-cords/]
KEMA
The
Netherlands
SEV
Switzerland
[https://www.gepowercord.com/europe-
https://www.gepowercord.com/what-is-a-power-cord/
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What Is A Power Cord? - Shaoxing Green Electric Co., Ltd.
power-cords/ ]
[https://www.gepowercord.com/europepower-cords/]
SEMKO
Sweden
[https://www.gepowercord.com/europepower-cords/]
DEMKO
Denmark
[https://www.gepowercord.com/europepower-cords/]
FI
Finland
[https://www.gepowercord.com/europepower-cords/]
OVE
Austria
[https://www.gepowercord.com/europepower-cords/]
CEBEC
Belgium
[https://www.gepowercord.com/europepower-cords/]
IMQ
Italy
NF
France
[https://www.gepowercord.com/europe-
https://www.gepowercord.com/what-is-a-power-cord/
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What Is A Power Cord? - Shaoxing Green Electric Co., Ltd.
power-cords/ ]
[https://www.gepowercord.com/northamerica-power-cords/]
UL
USA
[https://www.gepowercord.com/northamerica-power-cords/]
C- UL
Canada
[https://www.gepowercord.com/israelpower-cords/]
SII
Israel
[https://www.gepowercord.com/australianand-new-zealand-power-cords/]
SAA
Australia
[https://www.gepowercord.com/uk-powercords/]
BSI
UK
[https://www.gepowercord.com/japanpower-cords/]
T-MARK
https://www.gepowercord.com/what-is-a-power-cord/
Japan
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What Is A Power Cord? - Shaoxing Green Electric Co., Ltd.
KS
Korea
[https://www.gepowercord.com/koreapower-cords/]
[https://www.gepowercord.com/brazilpower-cords/]
BSA
Brazil
[https://www.gepowercord.com/argentinapower-cords/]
IRAM
Argentina
In addition, people also distinguish power cords
according to the wires they are equipped with.
Nowadays, the common wire/ cable information in
various countries is as follows:
Worldwide Cable and Wire Technical Information
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What Is A Power Cord? - Shaoxing Green Electric Co., Ltd.
CCC, VDE, KTL, SAA, TUV Certi cated Cable
and Wire
60245IEC53. H05RR-F, 60245IEC57. H05RN-F, 05RN8-F
(Ordinary duty exible cords)
2
0.75
0.6
2.4
0.8
VDE
CCC
6.4
KTL
1.0
3
0.9
7.2
SAA
TUV
1.5
0.8
3.3
1.0
8.1
2.5
0.9
4.0
1.1
10.2
0.75
0.6
2.4
0.9
7.0
1.0
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2.6
2.6
7.6
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What Is A Power Cord? - Shaoxing Green Electric Co., Ltd.
4
1.5
0.8
3.3
1.0
9.2
2.5
0.9
4.0
1.1
10.8
0.75
0.6
2.4
0.9
7.6
1.0
5
8.3
2.6
1.5
0.8
3.3
1.1
10.2
2.5
0.9
4.0
1.2
12.1
0.75
0.6
2.4
1.0
8.5
1.0
2.6
9.3
1.5
0.8
3.3
1.1
11.5
2.5
0.9
4.0
1.3
13.4
A05RR-F, A05RN-F(Ordinary duty exible cords)
2
1.25
3
1.25
0.8
3.1
1.0
S
8.2
8.7
60245IEC66. H07RN-F, H07RN8-F (Heavy duty exible
cords)
2
1.0
0.8
1.5
VD
E
3.1
1.3
8.8
3.3
1.4
9.4
2.5
0.9
4.1
1.7
11.6
1.0
0.8
3.1
1.4
9.5
CC
C
KTL
SA
3
A
1.5
3.3
1.6
10.4
TUV
2.5
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0.9
4.1
1.8
12.6
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What Is A Power Cord? - Shaoxing Green Electric Co., Ltd.
4
0.8
1.5
5
3.1
1.5
3.3
1.7
11.4
1.9
2.5
0.9
4.1
1.0
0.8
3.1
1.6
11.6
3.3
1.8
12.6
4.1
2.0
15.1
1.5
2.5
0.9
13.7
60245IEC51. H03RT-H
2
3
0.75
2.8
6.6
1.0
3.1
6.9
1.5
3.3
7.4
2.8
7.0
1.0
3.1
7.4
1.5
3.3
7.9
0.75
0.8
0.8
VDE
60227IEC52. H03VV(H2)-F, H03V2V2(H2)-F(Light duty
exible cords)
Conductor
VD
E
insulation (mm)
Sheath
CC
No.
Area
Thickness
OD
Thickness
OD
2
0.5
0.5
2.0
0.6
5.1
C
KTL
SA
0.5
2.0
3.4’5.4
A
0.75
2.2
5.5
TUV
0.75
https://www.gepowercord.com/what-is-a-power-cord/
2.2
3.5×5.7
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What Is A Power Cord? - Shaoxing Green Electric Co., Ltd.
3
0.5
0.5
0.75
2.0
0.6
2.2
5.4
5.8
60227IEC53. H05VV(H2)-F, H05V2V2(H2)-F (Ordinary duty
exible cords)
2
0.75
0.6
1.0
1.5
0.7
2.3
0.8
6.3
2.5
6.7
3
4.3×6.8
7.8
3
2.5
0.8
3.7
1.0
9.5
0.75
0.6
2.3
0.8
6.8
1.0
4
2.5
1.5
0.7
3
0.9
8.2
2.5
0.8
3.7
1.1
10.2
0.75
0.6
2.3
0.8
7.3
2.5
0.9
7.9
1.0
5
1.5
0.7
3
1.0
7.8
2.5
0.8
3.7
1.1
11.2
0.75
0.6
2.3
0.9
8.1
1.0
https://www.gepowercord.com/what-is-a-power-cord/
7.2
2.5
8.6
1.5
0.7
3
1.1
10.7
2.5
0.8
3.7
1.2
12.4
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What Is A Power Cord? - Shaoxing Green Electric Co., Ltd.
A05VV-F(Or dinar y dut y exible
S
cords
2
1.25
3
1.25
0.7
2.9
0.8
7.5
2.9
0.9
8.1
H07VV-F (Heavy duty exible cords)
2
3
4
5
0.75
2.8
1.3
8.2
1.0
3.0
1.5
3.3
1.5
9.6
8.6
2.5
0.9
4.0
1.7
11.4
0.75
0.8
2.8
1.4
8.9
1.0
3.0
1.5
3.3
1.6
10.4
9.3
2.5
0.9
4.0
1.8
12.3
0.75
0.8
2.8
1.5
9.8
1.0
3.0
1.5
3.3
1.7
11.4
10.3
2.5
0.9
4.0
1.9
13.5
0.75
0.8
2.8
1.6
10.8
1.0
3.0
1.5
3.3
1.8
12.6
4.0
2.0
14.8
2.5
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0.8
SAA
0.9
11.3
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What Is A Power Cord? - Shaoxing Green Electric Co., Ltd.
UL, c-UL Certi cated Wire and Cable
SJT、SJTW、SJTO、SJTOW. SJTOO. SJTOOW. SJT-R
2
18
0.76
2.8
0.76
7.5
UL
cUL
3
4
5
16
3.1
8.1
14
3.5
8.8
12
4.0
1.14
10.8
2.8
0.76
7.9
18
0.76
16
3.1
8.6
14
3.5
9.4
12
4.0
1.14
11.2
2.8
0.76
8.6
18
0.76
16
3.1
9.2
14
3.5
10.3
12
4.0
1.14
12.3
2.8
0.76
9.4
18
0.76
16
3.1
10.3
14
3.5
11.4
12
4.0
1.14
13.6
ST、STW、STO、STOW、STOO、STOOW
2
18
16
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0.76
2.8
3.1
1.52
8.9
9.4
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14
1.14
12
3
18
0.76
16
14
18
1.14
0.76
16
14
18
1.14
0.76
16
14
12.9
4.8
2.41
14.7
2.8
1.52
9.3
9.9
4.3
2.03
13.5
4.8
2.41
15.4
2.8
1.52
10.0
3.1
12
5
2.03
3.1
12
4
4.3
10.7
4.3
2.03
14.7
4.8
2.41
16.7
2.8
2.03
11.8
3.1
1.14
12
4.3
12.6
2.41
4.8
16.7
18.0
HPN、HPN-R
2
18
16
–
14
3
https://www.gepowercord.com/what-is-a-power-cord/
–
1.14
3.5×7.0
–
1.14
3.8×7.6
–
1.52
6.5×11.7
18
0.38
2.0
1.14
3.7×9.0
16
0.38
2.3
1.14
3.9×11.0
14
0.38
3.3
1.52
6.5*13.9
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What Is A Power Cord? - Shaoxing Green Electric Co., Ltd.
SPT-1. SPT-1W
2
18
–
–
0.76
2.8×5.6
SPT・2、SPT・2W、SPT-2-R
2
3
18
1.14
3.5×7.0
16
1.14
3.8×7.4
18
0.38
2.0
1.14
3.5×9.0
16
0.38
2.3
1.14
3.8×11.0
SPT-3
2
3
18
–
1.52
4.4×8.7
16
–
1.52
4.7×9.5
2.03
6.0×12.0
14
–
18
0.38
2.0
1.52
4.4×10.8
16
0.38
2.3
1.52
4.7*12.0
14
0.38
3.3
2.03
6.0×14.5
0.38
2.6×4.8
0.38
3.7×6.8
NISPT-1
2
18
0.38
2.0
NISPT-2
2
18
0.76
16
3
18
16
https://www.gepowercord.com/what-is-a-power-cord/
2.8
3.1
0.76
2.8
3.1
3.9×7.5
0.38
3.7×10.4
3.9×11.0
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SVT
2
18
3
0.38
2.1
0.76
5.8
17
2.2
6.0
16
2.3
6.4
18
0.38
2.1
0.76
6.1
17
2.2
6.4
16
2.3
6.8
Japan PSE Certi cated Cable and Wire
VCTF/HVCTF PVC FLEXIBLE CORD
No.of
Conductor
Insulation
Core
Sectional
Construction
Nom.Thick
Area(mm’)
(No./mm)
(mm)
Nom.Dia
(mm)
2
3
4
https://www.gepowercord.com/what-is-a-power-cord/
0.75
30/0.18
0.60
1.25
50/0.18
2.75
2.00
37/0.28
3.15
0.75
30/0.18
1.25
50/0.18
2.75
2.00
37/0.28
3.15
0.75
30/0.18
1.25
50/0.18
0.60
0.60
2.40
2.40
2.40
Nom.T
(m m
1.00
1.00
1.00
2.75
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2.00
37/ 0.28
3.15
VCTFK/HVCTFK PVC FLEXIBLE CORD
No.of
Conductor
Insulation
Core
Construction
Nom.Thick
Ncm.Dia
(No./mm)
(mm)
(mm)
(m
0.75
30/0.18
0.60
2.40
0.6
1.25
50/0.18
2.75
2.00
37/0.28
3.15
Sectional
Area(mm2»
2
Nom.
VFF/HVFF PVC FLEXIBLE CORD
No.of
Conductor
Insulation
Amp. R
Core
Construction
Nom.Thick
Nom.Dia
(No./mm)
(mm)
(mm)
0.50
20/0.18
0.80
2.6X5.2
3
0.75
30/0.18
2.8X5.6
7
1.25
50/0.18
3.2X6.4
12
2.00
37/0.28
3.4X6.8
15
Sectional
Area(mm7)
2
VSF/HVSF PVC FLEXIBLE CORD
No.of
https://www.gepowercord.com/what-is-a-power-cord/
Conduct or
Insulat ion
Am p.Ra
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What Is A Power Cord? - Shaoxing Green Electric Co., Ltd.
Core
Sect ional
Area(mm)
1
Const ruct ion
(No./mm)
0.50
20/0.18
0.75
Nom .Thick
(mm)
Nom .Dia
(mm)
0.80
2.5
3A
30/0.18
2.7
7A
1.25
50/0.18
3.1
12A
2.00
37/0.28
3.4
15A
VCT/HVCT PVC FLEXIBLE CORD
No.of
Conductor
Insulation
Core
Sectional
Areatmm*)
2
3
Construction
(No./mm)
(mm)
0.80
Nom.Dia
Nom.
(mm)
(m
2.75
1.
0.75
30/0.18
1.25
50/0.18
3.10
2.00
37/0.28
3.60
1.
0.75
30/0.18
2.75
1.
1.25
50/0.18
3.10
2.00
37/0.28
3.60
HHFF
https://www.gepowercord.com/what-is-a-power-cord/
Nom.Thick
0.80
1.
PSE
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What Is A Power Cord? - Shaoxing Green Electric Co., Ltd.
Conductor
Insulation (mm)
Max conductor
r esist ance
at20*CQ/KM
No.
Area
Thickness
OD
Bare
Tinned
2
0.75
1.0
3.2×6.4
24.4
25.8
1.25
3.6×7.2
14.7
15.5
2.0
3.9×7.8
9.5
9.91
1.0
4.4×6.8
PNCTFK
2
0.75
0.6
2.3
1.25
2.7
4.8×7.6
2.0
3.0
5.1×8.2
2PNCTF
2
3
4
https://www.gepowercord.com/what-is-a-power-cord/
0.75
2.4
1.0
6.8
1.25
2.7
1.1
7.8
2.0
3.1
0.75
0.6
2.4
1.0
7.2
1.25
2.7
1.1
8.3
2.0
3.1
1.2
9.1
2.4
1.1
8.0
1.25
2.7
1.2
9.2
2.0
3.1
0.75
0.6
8.4
0.6
9.9
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What Is A Power Cord? - Shaoxing Green Electric Co., Ltd.
2PHCT
2
3
4
0.75
0.8
2.8
1.7
9.0
1.25
3.1
2.0
3.5
1.8
11.0
2.8
1.7
9.4
1.25
3.1
1.8
10.5
2.0
3.5
0.75
0.75
0.8
0.8
2.8
1.25
3.1
2.0
3.5
9.8
11.5
1.8
10.5
11.5
1.9
12.5
Finally, people also distinguish power cords based on
terminals, such as various terminal connectors, such
as O ring connector, U shape connector, Crimp
Female plug ect.; IEC 60320 connectors, such as IEC
C5, C7, C13, C14, C19 etc..
The leading suppliers of power cords
in the world market
You can choose the appropriate manufacturer
according to your di erent needs. Now the wellknown power cord manufacturers in the international
market mainly include:
Kord King（PA, USA), Interpower Corporation (IA,
USA), World Cord Sets, Inc. (CT, USA), Quail
Electronics, Inc. (CA, USA), United Universal Industries,
Inc.( IL, USA), Cord-Sets, Inc. (MN, USA), American
https://www.gepowercord.com/what-is-a-power-cord/
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2022/10/15
What Is A Power Cord? - Shaoxing Green Electric Co., Ltd.
Power Cord Corporation ( NJ, USA), Autac (CT, USA),
Electri-Cord Mfg. Co. (PA, USA), United Universal
Industries ( IL, USA), American Cordset Industries ( IL,
USA), Electric Cord Sets, Inc (OH, USA), Feller LLC ( NC,
USA), Volex plc (Basingstoke, UK), Sun Fai Industrial
Co. (HK, China), Ningbo Aurich Electronics Co., Ltd.
(Ningbo, China), Oasis Connectivity ( Haryana, India),
NIngbo Yunhuan Electronics Group Co., Ltd. (Ningbo,
China), Ningbo Linsheng Electric Co., Ltd. (Ningbo,
China), Ningbo Well Electric Appliance Co. Ltd
(Ningbo, China)， Ningbo Xuanhua Electric Co., Ltd.
(Ningbo, China), Ningbo Xuanshi Electric Co., Ltd.
(Ningbo, China), Ningbo Yunxin Electric Appliance Co.,
Ltd. ( Ningbo, China), Shangyu Jintao Electron Co., Ltd.
( Shaoxing, China), Shaoxing Green Electric Co., Ltd.
(Shaoxing, China), Ningbo Fuyu Electric Co., Ltd. (
Ningbo, China), Zhejiang Jinting Nuclear Cable Co.,
Ltd. (Ningbo, China), Ningbo JInting Nuclear Cable Co.,
Ltd. (Ningbo, China), Ningbo Ousheng Electric Co., Ltd.
(Ningbo, China), Ningbo Compx Electronic Appliance
Co., Ltd ( Ningbo, China), Yuyao Fanghua Electronics
Co., Ltd. ( Ningbo, China), Yuyao Anlian Electronics
Science and Technology Co ., Ltd. ( Ningbo, China ),
Yuyao Yunbiao Electronics Co., Ltd. (Ningbo, China),
Yuyao Jingyi Electronics Co., ltd ( Ningbo, China),
Ningbo Biaoda Electric Co., Ltd. (Ningbo, China),
Ningbo Aurich Electric Co., Ltd. (Ningbo, China),
Ningbo Qiaopu Electric Co., Ltd. (Ningbo, China),
Ningbo Liansheng Wire & Cable Co., Ltd. (Ningbo,
China), Ningbo Wangting Electronic Co., Ltd. ( Ningbo,
China).
https://www.gepowercord.com/what-is-a-power-cord/
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