Starting Battery Cable Area
Volvo Penta recommends cable cross-sections
according to the table below in order to provide suffi-
cient power from the battery to the starter motor.
NOTICE!
The list applies to both 12 V and 24 V sys-
tems.
Measure the
total cable length
from the battery pos-
itive terminal (+) via the main switch to the starter motor
positive connection (+), and from the starter motor
negative connection (-) back to the battery negative
terminal (-).
Then select the recommended cable area according to
table below for
both
the negative cable (-) and the
positive cable (+).
Because the cable must absorb generated heat, the
cross-sectional area must be no less than
50 mm²
(0.076 in.
2
).
The total start battery cable length and cable cross section in temperature class 70 °C
(158 °F)
Total length of positive (+) and negative (-)
cables, max. length m (ft.)
7,3 (24)
9,7 (32)
12,4 (41)
Cable area, mm² (AWG)
70 (00)
95 (000)
120 (0000)
Comparison cable cross section (mm²) – diameter (mm) according to Volvo standard (SS
IEC 228)
Cross section, mm² (AWG)
50 (0)
70 (00)
95 (000)
120 (0000)
Core diameter approx., mm (in.)
12 (0.47)
14 (0.55)
16 (0.63)
18 (0.71)
IPS800
+
-
2
3
1
+
-
P0015387
1
Battery
2
Start motor
3
Main switch
Installation, Electrical System
47704162 10-2014 © AB VOLVO PENTA
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