12
MAIN ELECTRICAL SYSTEM
The main electrical system is a two cable ungrounded fully insulated negative return
system.
The motor is of the isolated earth type.
This system is used to minimise electrolytic and corrosion problems.
The system should be wired as per drawing B3424 or D3555
having taken into
consideration the best location for the main elements as previously discussed.
After all connections have been made and system tested, seal terminals against
moisture
by spraying with CRC2043 “Plasti-Coat”, CRC3013 “Soft Seal” or CRC2049
“Clear Urethane”.
The main supply cables should be selected from the following table:
RECOMMENDED MAIN CABLE CONDUCTOR SIZE
12 VOLT D.C. SYSTEMS
Conductor Length
Conductor Size
Engine Room
Battery to Winch
Size Correction
____________________________________________________________________
Metres Feet
MM²
A.W.G
MM² A.W.G
3.1 10
26
3
34
2
4.6 15
26
3
34
2
6.2 20
26
3
34
2
7.7 25
34
2
- -
9.2 30
42
1
- -
10.8 35
54
0
- -
12.3 40
54
0
- -
15.4 50
67
00
- -
24 VOLT D.C. SYSTEMS
Metres Feet MM²
A.W.G MM²
A.W.G
3.1 10
14.0
6 14
6
4.6 15
14.0
6 14
6
6.2 20
14.0
6 14
6
7.7 25
14.0
6 -
-
9.2 30
14.0
6 -
-
10.8 35 14.0
6 -
-
12.3 40 22.0
4 -
-
15.4 50 22.0
4 -
-
