I connect my coach mine when ever we boondock. However, if you have and Progressive EMS-HW50C as I do you'll most likely get and open neutral failure. From what I have found most if not all small portables do not bond the neutral wire. I have to by pass the EMS while connected to the portable generator.
Chuck & Teri, 1999 35 ft. Dolphin 5350, F53 Chassis with tag axle, Chassis build date 1/99 in Mexico, Banks System, Trans Command, Air Lift Air Bags on rear, Koni Shocks, Blue OX TruCenter, TigerTrak track bars front and rear, Roadmaster 1-3/4" rear auxiliary sway bar, 2013 VW Passat TDI SEL Premium, 1994 36 ft. Avion 5th Wheel. FMCA #F430129