Recommendations
In regard to personal safety and equipment care,
Volvo
Penta provides the following recommendations
for the installation of AC shore power:
Installations should be carried out according to figures
above.
Single phase, shows a single-phase installation for
240 VAC or 120 VAC.
Two-phase, shows an installation with a 240 VAC
input, 120/240 VAC output.
The figures are based on ABYC E-11 diagrams 8 and
11 but require a GFCI and an isolation transformer.
The figures are considered to be best practice and
follow recommendations from ABYC and ISO, and
offer protection against electrochemical corrosion and
electric shock.
The safety-related components are important for the
following reasons:
Isolation transformer
Refer to Arrangement and Planning page 40 for fur-
ther information.
GFCI
Refer to Arrangement and Planning page 40 for fur-
ther information.
Ground plate
A common ground plate below the waterline must be
connected to the AC/DC electrical system in order to
guarantee crew safety.
Shore power
When shore power (120/230 V) is connected, shore
power
ground protection must not be connected to the
engine or any other grounding point in the boat. Shore
power ground protection must always be connected
to the shore power connection box ground. Shore
power ground protection in the boat must be galvan-
ically 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.
Battery charging
Battery chargers directly connected to a shore con-
nection must be of the type “Full Transformer” (gal-
vanically separated windings) in order to reduce the
risk
for galvanic corrosion and stray current corrosion.
Arrangement and Planning, Electrochemical Corrosion
44 47704162 10-2014 © AB VOLVO PENTA
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