You really want to have a circuit isolator on a home system like this. The last thing you need is to be injuring or electrocuting the utility workers repairing damaged or downed powerlines. I always just run a few heavy duty power cords from the generator to the necessities.In your position I would think more whole house necessities than just your tank. Refrigerator, some lights, and your tanks. Kill two birds with one stone. It can be wired into your circuit panel to provide back up to certain circuit lines.