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timelinex's avatar
timelinex
Explorer
Sep 29, 2023

Inverter on Generator wiring?

I have a 2021 Grand Design 381m. I just put in 2 Lifepo4 batteries and am installing a Pure Sine Wave Inverter tomorrow. I am looking for the easiest way to do it before my trip next week.

I have a 5500 Onan generator, which is wired to a junction box in my battery compartment. From that junction box, the generator wires are wire-nut'd to wires that go to my transfer switch.

I know the "best" way of doing this is separating my panel into 2, adding another transfer switch so only one of them is energized, and running separate wires from the inverter to this setup..... But considering how often I will use the inverter and preferring an easy/fast install so I can have it for next weeks long trip...I've got a different idea.

Is there any reason I shouldn't put the inverter in the battery compartment, connect one end to my batteries, and add the inverter 120v wires into the wire nuts in that generator junction box?

I won't ever be running the generator at the same time. I also recognize that I have to flip my converter breaker off when using the inverter and be mindful of my use since the inverter is powering everything (a.k.a no AC...) I'm happy with all that. I'm just making sure there are no safety issues.

Thanks!

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