It really depends on how much you are willing to spend... I have a whole house inverter on my TT.. if I ever plug into shore power it will automatically shut off.. but the cheaper ones will not and things will fry if you forget to turn it off before hooking into shore power..
Remember (if you do it yourself) heavy gauge wires directly from the battery to the inverter 00 ga not 8 or 10 and a big fuse.. inline.. in this I assume you are going with a min 2000 watt inverter...
2004 Chev Silverado Duramax optioned past the max. 2009 Jayco Eagle 308 RLS 765 watts of solar, 6-6 volt batteries (696 amp hour), 2000 watt (4000 surge) whole house inverter.
140 days boondocking in 2016
211/2015, 196/14, 247/13, 193/12