ELECTRICAL SYSTEMS-HOUSE - 8
143
CAY M A N 2 0 0 7
WARNING:
Avoid the risk of electrical shock or
component damage by disconnecting
from shore power during electrical
storm activity. Use the Inverter/Charger
or start the generator if AC power is
needed.
NOTE:
Three types of shore power outlets
most commonly used are shown in the
illustration.
Power Supply:
Amperage supplies vary greatly depending on
the amount of available current.
The continuous amount of current
through a breaker or fuse is only 80% of
its rated capacity.
50 Amp 240 Volt AC shore power
service consists of two power
supply conductors, a neutral and a
safety ground. The 50 Amp breaker
simultaneously limits each power
supply conductor to no more than
a short-term maximum of 50 Amps
for each conductor. The 50 Amp 240
Volt AC service actually provides 80
continuous amps.
Use care when hooked to anything
less than 50 Amp shore service. Shore
power service less than 50 Amps
consists of one power supply conductor,
a neutral and a safety ground; 30 Amp
shore service is limited to 24 continuous
Amps; 20 Amp shore service is limited
to 16 continuous Amps.
Electrical Adapters:
There are different electrical adapters to suit
a variety of needs. Only UL approved adapters
should be used. The most common adapter is
a 50-30 Amp adapter. This type of connector
adapts the 50 Amp shore cord to a 30 Amp shore
power outlet.
Another common adapter is the 30-20 Amp
adapter. Always install the adapter to the cord
prior to making the connection to the outlet.
TRANSFER SWITCH
The transfer switch automatically transfers AC
power from the shore power cord or generator
through the transfer switch to the 120/240 Volt
AC breaker panel. When using the generator as
the power source, the transfer switch has a time
delay built into it before transferring power to
the AC breaker panel. This allows the generator
time to warm up before applying an AC load.
When operating the generator while hooked to
shore power, the transfer switch automatically
selects generator power as priority over shore
power.
NOTE:
The shore cord is NOT electrically
connected to the generator. When the
generator is operating, the electrical
contacts of the unplugged shore cord are
not electrically energized.
NOTE:
DO NOT have appliances on or AC
loads plugged into outlets when hooking
to shore power or starting the generator.
Damage to the transfer switch contacts
may result. The transfer switch will
begin to disengage at approximately 90
Volts AC. Operation at this voltage may
damage the transfer switch, appliances
or other items plugged into outlets. Start
the generator and disconnect from shore
service until the shore service supply
voltage stabilizes.
060164
Typical 50-30 Amp Adapter
060174
Typical 30-20 Amp Adapter: Adapts 30 Amp Shore Cord to
20 Amp Shore Power Outlet
060167e
Located in pass-through
storage bay.
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