Garret Towne February 15, 2017 Class A, Example Projects 11/14/2016 - 2007 Tiffin Allegro Bus, 40' Garret Towne February 15, 2017 Class A, Example Projects We installed a powerful 960W Solar charging system, a 300Ah AGM Battery bank and a 3000W inverter on this class A motorhome. Fortunately Victron inverters can be installed in a variety of orientations. This one is upside down.