Robin America R1700i Service Manual page 12

NOTES : Wiring between generator and electrical appliances
1. Allowable current of cable
Use a cable with an allowable current that is higher than the rated input current of the load (electrical
appliance). If the input current is higher than the allowable current of the cable used, the cable will
become excessively heated and deteriorate the insulation, possibly burning it out. The table below
shows cables and their allowable currents for your reference.
2. Cable length
If a long cable is used, a voltage drop occurs due to the increased resistance in the conductors
decreasing the input voltage to the load (electrical product). As a result, the load can be damaged.
The table below shows voltage drops per 30 meters of cable.
Cross Allowable
sectional Current
2
mm A
1.25 12
2.0 17
3.5 23
5.5 35
Voltage drop indicates as V=
The length of wire (L) indicates round length, which is the length from the generator
to the electrical tools and back.
<Example> R : Resistance 1.25mm
I : Electric current 10A
L : Length 30m
The voltage drop of the case described above
V= 1.48
Cable
Resistance
/100m 5A
1.486 4.5V
0.952 2.8V
0.517 1.6V
0.332 1.0V
1
x R x I x L
100
=1.48 /100m
2
x 10A x (30m x 2)
8.9 (V)
100
– 9 –
Voltage drops per 30 meters of cable
10A 15A 20A
8.9V
5.7V 8.6V
3.1V 4.7V 6.2V
2.0V 3.0V 4.0V
R : Resistance ( /100m)
I : Electric current (A)
L : Length (m)
25A 30A
5.0V 6.0V