Voltage drop in electric extension cords – Subaru Robin RGX2900 User Manual
Page 27
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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 300 feet (approx. 100 meters) is used to connect an appliance
or tool to the generator.
Nominal
cross
section
A.W.G.
Allowable
current
No.of strands
/ strands dia.
Resistance
Current Amp.
mm
2
No.
A
No./mm
/100m
1A
3A
5A
8A
10A
12A
15A
V
oltage drop
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
2.0
14
17
37/0.26
0.952
1V
3V
5V
8V
10V
12V
15V
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