Section 4
4-20
350 Express Series
AC Electrical System
AC POWER
The standard AC electrical system in the 350 Express Series Yacht
is wired for 120/240 volts AC, 50 amps, single-phase, 60-hertz power.
This allows the system to have two lines, L1 and L2, at 120V AC and
also 240V AC. The neutral (white) conductor is connected to shore
grounded neutral. The yacht ground (green wire) is connected to the
dockside ground via a galvanic isolator. The galvanic isolator reduces
galvanic corrosion due to stray low voltage DC currents between the
yacht ground and the dockside earth ground.
An optional AC system for non-U.S. power is wired for 220-volt, 32-
amp, 50-hertz power.
AC Master Panel
UNITED STATES VERSION
120/240V AC, 50-amp, single-phase, 60-hertz is the standard power
system. An onboard generator will furnish 120/240V AC single-phase
power.
INTERNATIONAL VERSION
220V AC, 32-amp, single-phase, 50-hertz is the optional international
power system. An onboard generator will furnish 220V AC 50-hertz
power.
The load center can receive power at dockside or from the generator.
For dockside power, move the slide protector over the generator
breaker and turn on the dockside breaker. For generator power, move
the slide protector over the dockside breaker and turn on the
generator breaker.
The circuit breakers’ function is twofold; they allow you to manually
enable or interrupt a circuit by flipping the switch on or off, and they
also protect the system receiving the AC load by automatically
breaking the circuit in case of shorts or overloads.
GENERATOR
The generator may be started from the engine batteries unless your
yacht is equipped with a separate battery for the generator only.
To start the generator, hold generator switch in the START position
until you hear the generator has started, then release switch. The
switch will automatically return to the RUN position and AC power is
applied to the load center or centers selected.
Turn the generator off by placing the generator switch in the STOP
position. The power transfer slide protector prevents accidental use of
shore power and generator power at the same time. Slide protector
positioning is discussed under “Operation of AC Systems” in this
chapter.
DANGER
Considerable care has been taken to design a safe
electrical system to protect you from hazardous
shock. Any modifications to the system should always
be done by an authorized Cruisers Yachts Dealer not
only to protect your warranty, but also to protect you
from hazardous shock.
CAUTION
DO NOT reset a breaker which has been automatically
tripped without first identifying and remedying the
cause of the problem.
IMPORTANT
Read the generator owner’s manual contained in the
Skipper’s Kit before operating the generator for the first
time. The manual contains important operation and
maintenance information.
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