Kipor Sinemaster IG3000 Operation Manuals page 42

2. The choice of the electric cable
The choice of the electric cable depends on the allowable current of the cable and the
distance between the load and the generator. And the cable section should be big
enough.
If the current in the cable is bigger than the allowable current, it will become over hot
and the cable will be burnt. If the cable is long and thin, the input voltage of the
electric appliance will be not enough, causing that the generator doesn't start.
In the following formula, you can calculate the value of the potential "e".
Potential value
Specific resistance of copper ρ [20℃]（Ω·mm
Voltage drop e =ρ（specific resistance）×
e
2
230V 2.5mm
2
12.2A
4.0mm
IG3000
2
230V 4.0mm
17.4A 6.0mm2
IG4000
5m 10m
0.427V 0.854V
0.267V 0.534V
0.381V 0.761V
0.254V 0.508V
36
2
/m）=0.0175
×I（Rated current）
20m 30m
1.708V 2.562V
1.068V 1.601V
1.523V 2.284V
1.015V 1.523V
40m 50m
3.416V 4.270V
2.135V 2.669V
3.045V 3.806V
2.030V 2.538V