I have the 2018 Wildwood 30qbss with the same residential fridge. I leave the inverter on all the time. I added an extra battery and have them tied together. I do not dry camp but I have been off of shore power for up to 24 hours and never ran out of power. I leave the fridge on while traveling as well and never had issues. That fridge stays much colder than my previous fridges in other trailers that were the typical trailer fridge. Only thing I had to fix was the support under the fridge was not up to par so I added more bracing. You may want to check that out. Good luck.
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Philip, DW, 3 DD, 1 DS, and Ginger our Dog
2017 Wildwood 30QBSS
2003 Ford Expedition 5.4 Liter with 3.73 Axle
Equalizer 4-Point Sway 12000# & Tekonsha P3
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