First 44.7 – GB – 03/12/03
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4.3. Electrical system
All the functions or switchboards where the voltage is not stated are in 12 or 24 volts
4.3.1. 12V-24V electrical system
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Never work on a live electrical installation.
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Batteries should be carefully lashed.
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Do not obstruct the battery ventilation ducts, some of them discharge hydrogen presenting a risk of
explosion. Do not obstruct the battery ventilation ducts, some of them discharge hydrogen presenting a risk
of explosion.
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Batteries should be handled with precaution. In case of the spillage of electrolyte, rinse the part of the body
that has entered into contact with it abundantly and call a doctor.
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To avoid a short circuit between the two battery poles, do not stow conductive objects close to the batteries
(metal tools,…).
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When charging or connecting / disconnecting batteries, close the battery switches.
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Never modify the characteristics of devices for the protection of overvoltage.
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Never modify an installation. Call on the services of a qualified marine electricition.
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Never install or replace electrical equipment or appliances with components exceeding the amperage of the
system.
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Never leave the boat unattended when the electrical installation is switched on, except for the automatic
bilge pump and systems for fire protection or burglar alarms.
Please note; the wires of the 12v system are red for the positives and black for the negatives.
The 24v system conductors are white or brown for the positive and blue for the negative.
4.3.2. 110V-220V electrical system
Some boats are fitted (as standard or on option depending on the models) with a 110V or 220V system.
The following measures should be taken to avoid the risks of electric shocks and fires.
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Never work on a live installation.
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Connect the shore power cable at the boat end before connecting to the shore power outlet.
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Never let the end of the shore power cable hang in the water.
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When the shore power cable is connected, there can be a difference between the boat’s “earth” and
that of the mains, therefore there is a risk of an equalising current and electrocution (notably of
swimmers bathing close by).
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Cut off the shore power supply at the breaking device installed on board before connecting or
disconnecting the shore power cable.
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Disconnect the shore power cable at the shore end first.
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If the reverse polarity indicator is activated, immediately disconnect the cable. Rectify the polarity
error before using the boat’s electrical installation.
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Make sure the shore power input protection is closed.
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Never modify the connections of the shore power cable: only use compatible connections.
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Never modify the boat’s electrical installation or the pertinent diagrams. Any installation, modification and
maintenance should be carried out by a qualified marine electrician. Check the system at least twice per
year.
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Deactivate the boat’s power supply when the system is not being used. This is to prevent fires.
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Connect the boxes or metal envelopes of the electrical appliances installed to the boat’s protection lead
(green with yellow stripes lead)
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Use electrical appliances with double insulation or with earthing.
Please note: the live conductors are brown, the neutral ones are blue et the earth wires are green and yellow
