3-4
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.
On gensets so equipped, the PTO can take most, if
not all, of the power available from the engine. The
boat builder may have made provisions to automati-
cally disconnect all or most electrical loads when the
PTO is engaged. It may be necessary to run fewer
electrical loads—or none at all—when the PTO
is engaged.
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.
Redistribution or publication of this document,
by any means, is strictly prohibited.
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