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Old 09-17-2017, 11:04 PM   #1
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Default Generator question

Hi All;

Not sure if this is the right place for this question but hope that someone may have some info.

I need a generator on my boat and don't have room for a standard generator. (120V AC)

I have an old gas generator and everything works except for the gas engine.

I thought I might be able to hook the generator to my boat motor so I can have 120VAC.

Problem is, my engine at WOT runs at 4200RPM. When using the generator I can set it to any RPM but I'm not sure what this will do to the generator or what RPM it would typically run at - I'm guessing 3000RPM?

What happens if I run it too fast such as 4000RPM??

What happens if I run a little too slow? say 2000RPM?

With thanks.
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Old 09-17-2017, 11:16 PM   #2
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Please go to our sister site and go from there and with boat and portable generators are not the best item to be in the mix.

and there is some additional codes will come up in marine useage.

Thanks for posting on The Moderators of this forum would prefer if you post Do It Yourself related topics on our sister site is designed for electrical industry professionals to discuss issues and topics related to the electrical trades and related industries. Many of our professionals are also members at and are looking forward to assist you with your needs.

Please take a moment to post your question at If you're not already a member of you can sign up for a free account by going to

We apologize for any inconvenience that this may have caused. This thread has been closed.
Bleu est beau.
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