Regal 3300 Owner's Manual page 211

Generator
If installed, the generator can be used to power the AC electrical system
when a shore power source is not available.
The generator starter is powered by a designated 12-volt battery. Power
to the generator from the battery is controlled by a battery switch.
Do not turn off the generator battery switch while the generator is
operating. The generator and/or alternator wiring can be damaged.
Do not operate the generator while the generator's cooling system
seacock is closed. Operating the generator with the seacocks
closed can damage the system.
Always operate the bilge blower(if installed) prior to starting the
engines or generator. Gasoline vapors can explode, resulting
in death or serious injury. Before starting the engines or
generator, perform the following:
• Sniff the engine room for fuel vapors.
• Operate the bilge blower for a minimum of 4 minutes.
• Verify the bilge blowers are operating properly.
Always run the bilge blower when the vessel is operating below
cruising speed.
Never inhale generator exhaust. Generator exhaust contains
carbon monoxide, a poisonous gas that could result in death or
brain damage.
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WARNING
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DANGER
Features
6-51