Scout Boats 420 LXF, Руководство пользователя

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Electrical System
6.12 Bonding System &
Galvanic Isolator
Your boat is equipped with a bonding system
that interconnects all underwater hardware and
thru-hull fittings to ensure that they are of the
same electrical potential. Sacrificial anodes are
attached to the bonding system at the trim tabs
and engines. There is also an anode in the sea-
water cooling system for the generator and on the
bow thruster propeller if this option is installed on
your boat.
The anodes deteriorate before the other metals,
thereby protecting the underwater metals from
galvanic corrosion or stray electrical current.
Since the anodes are sacrificial, it is important to
monitor them and replace them when they have
deteriorated to 50 - 75% of their original size. The
bonding system is connected to the DC ground
and the earth ground wire for the AC electrical
system. It provides a path for dangerous short
circuits in the AC electrical system to the safety
earth ground in the event of a fault in the shore
earth ground connection and when the boat is
away from the dock.
When the boat is connected to shore power at a
marina or city dock, all boats connected to shore
power are connected to a common shore safety
earth ground connection. This circuit provides
essential protection against electrical shock from
faults or short circuits in AC equipment and, unfor-
tunately, provides a path for low voltage galvanic
current to flow between the bonding systems of
other boats in the circuit. If one or more of the
boats in the circuit has a stray current electrical
problem or is not equipped with proper galvanic
protection, it will seek protection from your boat’s
bonding system through the safety ground circuit.
This could cause accelerated deterioration of the
sacrificial anodes and/or severe damage to the
underwater hardware. To prevent damage from
other boats in the circuit, a galvanic isolator is
installed in the shore ground circuit that isolates
your boat’s bonding system from the other boats.
It prevents the flow of low voltage galvanic current
while still providing a path for dangerous short
circuit currents in the AC system to the shore
safety ground.
6.13 Electrical System Maintenance
12 volt AC Electrical System Maintenance
At least once a year, spray all exposed electrical
components behind the helm, in the transom area
and in the plugs with a protector. Removable light
fixture lenses should be removed and wiped clean
with a damp cloth and reinstalled. Some LED light
fixtures are sealed and not serviceable.
CAUTION
WHEN REPLACING LIGHT BULBS IN MARINE LIGHT FIXTURES,
ALWAYS USE A BULB WITH THE SAME RATING AS THE
ORIGINAL. USING A DIFFERENT BULB COULD CAUSE THE
FIXTURE TO OVERHEAT AND MELT OR SHORT CIRCUIT.
Inspect all wiring for proper support, sound insula-
tion and tight terminals, paying particular atten-
tion to portable equipment power cords and plugs.
Check all below deck wiring to be sure it is prop-
erly supported, that the insulation is sound, and
that there are no loose or corroded terminals.
Corroded terminals should be thoroughly cleaned
with sandpaper or replaced, tightened securely
Thru-Hull Valve Bonding Wires & Connection
https://www.boat-manuals.com/