ENGLISH 11-07-2023 12/95 DUFOUR 41
III. ELECTRICAL SYSTEMS
Instructions on safety and operation of the electrical system
WARNING
Improper use of AC and/or DC systems may induce fire or explosion hazards.
Improper use of AC systems may result in a risk of electrocution.
Always:
● Check the condition of the batteries (charge and electrolyte level) and the charging system
before setting sail.
● Disconnect and remove batteries for wintering the boat.
● Maintain battery voltage above 12 V during wintering.
● Carry spare bulbs for all navigation lights and indoor lighting.
Respect power ratings, especially as regards navigation lights.
● Check that all navigation instruments are in perfect working order.
● Check that navigation lights are in perfect working order prior to night sailing.
Never:
● Work on a live electrical installation.
● Modify an installation and the associated circuits, unless this is done by an electrician who is
a qualified marine electrical engineer.
● Change or modify the breaking capacity of overcurrent protection devices.
● Replace electrical equipment or appliances with components that exceed their specified rated
capacity without uprating the leads and their protection mechanisms.
● Leave the boat unattended when the electrical system is under power, with the possible
exception of an automatic bilge pump and the fire and burglar protection systems.
If a fuse or circuit breaker blows repeatedly, call a specialist to identify the cause of the short-circuit.
Installing new equipment
Since 1
st
January 1996, electrical equipment must comply with the European ’’electromagnetic
compatibility’’ Directive (Ref 89/336/EEC). All new equipment or appliances that are installed must
meet this standard and bear the relevant CE marking. The equipment must also be delivered with a
certificate of conformity and an instruction manual.
Where 220 V or 110 V installations are concerned, only use electric appliances that are double-
insulated or earthed. When installing such equipment, follow the fitting instructions carefully (cable
cross-sections, protection mechanisms).
To prevent maintenance issues, note in the manual any changes made to the electrical circuit.
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