| From the Predator 2000 manual: Do not run the generator until it is grounded. The generator must be grounded in accordance with all relevant electrical codes and standards prior to use.

What happens if you don't ground a generator?

If your generator isn't grounded, that path of least resistance could allow electricity to flow in places it shouldn't be – which can cause electrocution, spark a fire, or cause other dangerous situations. Grounding provides a backup path of least resistance for electricity to flow.

Do generators need to be on ground level?

That system works well if the unit is on level ground. But if you park the generator on a slope (usually more than 10 degrees), the dippers can't reach all the oil, and some engine parts run dry. That's a recipe for catastrophic failure. So always place your generator on a level surface.