Robin RGD500 Service Manual page 20

NOTES : Wring between generator and electrical appliances
I . Allowable current of cable
Use a cable W h an allowable current that is higher than the rated input current of the load (electrica
appliance). If the input current is higher than the allowable current o f the cable used, the cable will
become excessively heated and deteriorate the insulation, possibly burning
it out. Table 7-2 shows
cables and their allowable currents for your reference.
2.
Cable length
If a long cable
i s
used, a voltage drop
occurs
due to the increased resistance in the conductors de-
creasing the input voltage to the load (electrical product). As a result, the load can be damaged. Table
7-2 shows voltage drops per 100 meters of cable.
Sectional
area
I
mm3
I -
I
5.5
Allowable
current
I
A
7
12
17
23
35
No'
w i r e element
NoJ
mm
Resistance
30 10.18
50 I 0.1 8 1.486
37
I 0.26
0.517
70 I 0.32
0.332
Table. 7-2
Voltage drop indicates as
V=
-
x R
x I x
L
1
100
R means resistance (
62 / 100
m) on the above table.
I
means electric current through the wire
(A).
L means the length o f
the wire (m).
The length o f wire indicaters round length, it means twice the length from generator to electrical tools.
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17-