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Old 08-30-2010, 11:56 AM   #1
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Join Date: Aug 2010
Posts: 10
2008 Sea Breeze - Shore power transfer switch?

Hi there, I have 33 foot 2008 Sea Breeze LX. I just got it this past weekend, so I am still learning about it. However, I was hoping someone could answer a question about an inverter/power transfer switch...if there even is one on the motorhome. My understanding of the electrical system so far, is that when plugged into shore power or generator power, ALL electrical devices should be drawing their power from the shore/gen power...not the inverter. There is a Xantrex Pro 1800 inverter installed in the motorhome and about half of the electrical outlets are powered by the inverter. On the inverter control panel, there is a status light indicator...with red, yellow and green lights. I believe the green light indicates utility power (shore/gen power?), the yellow indicates battery power, and the red indicates a fault. When I am plugged into shore power, the status light stay yellow indicating it's getting power from the battery...not the shore power. Also, the real problem is, I cannot power any electrical devices (like TV's) that are plugged into the inverter outlets while plugged into shore power UNLESS the inverter is powered on. Shouldn't there be some sort of transfer switch that senses that shore power is being supplied and therefore power everything (without needing to power up the inverter?)

This really isn't too much a of a problem as I can still run most everything in the RV as long as the inverter is turned on. But I think I could potentially draw more power from the batteries than is being sent to the batteries for charging purposes with my current situation...as the batteries are still being drawn upon while plugged in to shore power.

Thanks for any help!

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Old 08-30-2010, 07:22 PM   #2
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Join Date: Aug 2010
Location: Morgan Hill, CA
Posts: 180

I went to the Xantrex site and checked the manual for the Pro 1800. It says it has an AC pass through, however, it must be connected to the AC somewhere. I'm guessing here, perhaps to any hot outlet. Since this is an inverter only not a charger/inverter it's only function is to convert 12VDC to 120VAC. It is doing that just fine. I suspect the installer did not connect the AC mains to the inverter so it has no way of knowing shore power is available. The manual shows how to connect the AC to the unit however if you are not comfortable around 120VAC get someone who is familiar with this unit or at least competent in reading schematics.

Good luck ~ Bill

Here is the link for the manual.

Power Inverter, Marine Inverter, PRO Series Inverter
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