Furuno Inmarsat FleetBroadband FELCOM251 Installation Manual page 56

4.2.3 One Pole Grounded Return System
This configuration implies that the battery negative is bonded to a ground potential,
typically at the engine negative terminal. This is done in order to polarize the DC elec-
trical system.
SWITCH
(ON/OFF)
SWITCHBOARD
Note: This arrangement is not suitable for steel and aluminium vessels as this might
cause electrolytic corrosion of the hull.
-
+
BATTERY
STARTER RELAY
B+
ALTERNATOR
B-
OUTGOING CIRCUITS
4. GROUNDING AND RF PROTECTION
+
BATTERY
(ON/OFF)
GAUGES
+
STARTER
MOTOR
- SENSORS
HULL/KEEL/ENGINE
(VESSEL GROUND)
-
ENGINE
4-3