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2004 • LaPalma
Electrical Systems
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 220 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 220 Volt 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 many different electrical adapters available to suit a variety of
needs. Only UL approved adapters should be used. The most common
adapter is a 50-30 Amp adapter to adapt 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 outlet.
Another common adapter is a 30 to 15 Amp adapter. This type of
connector adapts the 30 Amp shore cord to a 20 Amp shore power 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!
OM060164
OM060174
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