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Power Supply:
Different amperage supplies vary greatly in 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 (120 Volts AC each),
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 services. 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. A
common adapter is a 30 to 20 Amp adapter. This type of connector adapts the 30 Amp shore cord to a 20 Amp
shore power outlet. Always install the adapter to the cord prior to making the connection to the outlet.
CAUTION:
If shore power service is limited to 15 or 20 Amps, use
of light duty extension cords and electrical adapters
will create a voltage loss through the cord and at each
electrical connection. Line voltage loss and the resistance
at each electrical connection can be a hazardous
combination. Damage to sensitive electronic equipment
may result!
WARNING:
Avoid the risk of electrical shock or component damage
by disconnecting from shore power during electrical
storm activity. Start the generator if AC power is
needed.
Another adapter is a 50-30 Amp adapter. This type of
connector adapts the 50 Amp shore cord to a 30 Amp shore
power outlet. Always install the adapter to the cord prior to
making the connection to the outlets.
NOTE:
Three types of shore power outlets most commonly used are shown
in the illustration.
WARNING:
Before working on the electrical system, disconnect from shore power and turn off the optional
inverter. Disconnect the negative 12 Volt DC battery cables at the batteries. Remove rings, metal
watch bands and other metal jewelry before working around batteries and connectors. Use caution
when working with metal tools. If the tool contacts a battery terminal or metal connected to it, a short
circuit could occur causing personal injury, explosion or fire.
generator prep
The prep package for a gas generator set includes the necessary DC and AC wiring as well as fuel lines to the
generator compartment.
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Typical 30 - 20 Amp Adapter: Adapts 30 Amp
Shore Cord to 20 Amp Shore Power Outlet
Typical 50-30 Amp Adapter: Adapts 50 Amp
Shore Cord to 30 Amp Shore Power Outlet
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