Loading The Genset; Load Operation; Connecting To Shore Power - Onan MDKBH Series Service Manual

LOADING THE GENSET

How much equipment load can be powered de-
pends upon the genset power rating. The genset will
shut down or its AC output circuit breakers will trip if
the sum of the loads exceeds genset power or cir-
cuit breaker rating.
The genset may shut down due to overload when a
large motor or air conditioner is started or cycles off
and then on again, even though the sum of the loads
is less than genset rating. The reason for this is that
a motor's startup load is much larger than its running
load. It may be necessary to run fewer loads
when large motors and air conditioners are cycl-
ing on and off.
The genset is rated at standard barometric pres-
sure, humidity and temperature (ref. ISO 3046). Ei-
ther low barometric pressure (high altitude) or high
ambient temperature will decrease engine power. It
may be necessary to run fewer loads under such
conditions.
NO-LOAD OPERATION
Keep no-load operation to a minimum. During
no-load operation cylinder temperatures drop to the
point where fuel does not burn completely, causing
fuel wetting and white smoke. It is best to run the
genset at 1/4 to 3/4 load.

CONNECTING TO SHORE POWER

When provisions have been made for connecting
shore power, the boat must have an approved de-
vice to keep the genset and shore power from being
interconnected.
Interconnecting the genset and
WARNING
shore power can lead to electrocution of utility
line workers, equipment damage and fire. Use
an approved switching device to prevent inter-
connections.
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