VOLTAGE DROP IN ELECTRIC EXTENSION CORDS

When a long electric extension cord is used to connect an appliance or tool to the generator, a certain amount of voltage drop or loss occurs in the extension cord which reduces the effective voltage available for the appliance or tool.

The chart below has been prepared to illustrate the approximate voltage loss when an extension cord of 100 meters is used to connect an appliance or tool to the generator.

Nominal

 

Allowable

No.of strands

 

 

 

 

 

 

 

 

 

cross

A.W.G.

Resistance

 

 

Current Amp.

 

 

 

section

 

current

/ strands dia.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

mm2

No.

A

No./mm

Ω/100m

1A

3A

5A

8A

10A

12A

15A

 

0.75

18

7

30/0.18

2.477

2.5V

8V

12.5V

 

1.27

16

12

50/0.16

1.486

1.5V

5V

7.5V

12V

15V

18V

drop

 

 

 

 

 

 

 

 

 

 

 

 

2.0

14

17

37/0.26

0.952

1V

3V

5V

8V

10V

12V

15V

Voltage

3.5

12 to 10

23

45/0.32

0.517

1.5V 2.5V

4V

5V

6.5V 7.5V

 

 

 

 

 

 

 

 

 

 

 

 

5.5

10 to 8

35

70/0.32

0.332

1V

2V

2.5V 3.5V

4V

5V

 

ENGLISH

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Makita G7300R, G7301R manuel dutilisation Voltage Drop in Electric Extension Cords, - 23-

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