Prevention of stray current during
installation
Correct installation reduces the risk of stray current
throughout boat service life.
•
All DC circuits must have an insulated ground
return.
•
All joints in the system such as connectors, connec-
tor rails etc., must be installed such that they are not
exposed to moisture or bilge water. The same
applies to switches and fuse holders etc.
•
Cables must be run as high as possible above bilge
water level. If a cable must be run such that it is
exposed to water, it must be run in a watertight
sheath, and the connectors must also be watertight.
•
Cables that may be exposed to wear must be instal-
led in self-draining conduits, sheaths, cable chan-
nels or similar.
•
For information regarding the installation of batteries
and main switches, refer to the
Installation page 121
and
Alternator
connnections page 130
chapters.
•
Engines and drivetrains may not be used as ground
connections for radio, navigation or other equipment
where separate ground cables are used.
•
All separate ground cables (ground cables for radio,
navigation equipment, echo sounders etc.) must be
connected to a common grounding point, e.g. a
cable that in normal circumstances does not func-
tion as a ground return for the equipment.
•
When shore power (120/230 V) is connected,
ground protection must not be connected to the
engine or any other grounding point in the boat. The
ground protection must always be connected to the
shore power connection box ground.
•
Converters such as battery chargers connected to
shore power, must have ground protection con-
nected on the input side (120/230 V), but the nega-
tive connection on the output side (12/24 V) must
not be connected to ground protection without being
galvanically separated.
WARNING!
Work on the low voltage circuits in the boats should be
done by a person with electrical training or knowledge.
Installation or work on land current equipment must
only be done by a competent electrician, in accordance
with local regulations for mains electricity.
Arrangement and Planning, Electrochemical Corrosion
47704162 10-2014 © AB VOLVO PENTA
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